Sqldatasource Filterexpression In Code Mode
Apr 14, 2008
I have wrote some codes as follows:
Dim sqldatasource3 As New SqlDataSource
sqldatasource3.ConnectionString = System.Web.Configuration.WebConfigurationManager.ConnectionStrings("aspnetConnectionString").ConnectionString
sqldatasource3.SelectCommand = "select stepno,steppersontype,stepname,steptype,fchoice,fforward,schoice,sforward from flow "
sqldatasource3.FilterExpression = "stepname = '" & GridView1.SelectedRow.Cells(4).Text.Trim & "'"
sqldatasource3.DataSourceMode = SqlDataSourceMode.DataSet
Dim dv As DataView = sqldatasource3.Select(DataSourceSelectArguments.Empty())
dv.RowFilter = "stepname = '" & GridView1.SelectedRow.Cells(4).Text.Trim & "'"
but i found the filterexpression didn't work. No matter what value GridView1.SelectedRow.Cells(4).Text.Trim be,sqldatasource always return the whole dataset.I wanna know where these code are wrong? Can anyone help?
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Feb 5, 2007
Hi
on my page: two sqldatasources one has the sqlexperession:
SELECT DISTINCT [Skil] FROM [UsersView]UNIONSELECT 'Alles'
the other one :
SELECT [UserName], [Afdeling], [Skil], [RoepNaam] FROM [UsersView]
the first source is bound to a dropdown list. witch I want to use for filtering.
the second to a gridview.
the code for the dropdownlist selectedindexchanged is:protected void SkillDDL_SelectedIndexChanged(object sender, EventArgs e)
{
if (SkillDDL.SelectedValue.ToString() == "Alles")
{
SqlDataSource3.FilterExpression = "";
}
else
{
SqlDataSource3.FilterExpression = "Skil = '" + SkillDDL.SelectedValue + "'";
}
}
The strange thing is that initially 'Alles' is selected in the dropdown list and I see all the records. then I select an other value in the dropdownlist. and I get the filtered records, like I would expect.
then when I select 'Alles' again I keep my last selected records in view. I would expect that the filter is now an empty string and I would get all the records again. what do I do wrong?
thanks
Rob Warning
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Feb 21, 2007
I'm not sure exactly how the FilterExpression works. I have a sqldatasource, stored procedure, and GridView. My stored procedure basicly a select statement to populate my gridview, it included the fields I want to filter on. In my codebehind file I build a WHERE Clause based on the entries a user makes. Then I add the my FilterExpr variable to the SqlDataSource1.FilterExpression = FilterExpr. My SqlDataSource has a number of control parameters that match the textboxes a users enters into.
My question, I guess is does my stored procedure need the variables matching my controlparameters for my sqldatasource? Or how does this work? My GridView is returning all rows no matter what I enter into the filter textboxes (first, last, etc...)
MY SQLSDATASOURCE <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="ClientSearch" SelectCommandType="StoredProcedure">
<FilterParameters>
<asp:ControlParameter ControlID="SearchLastName" Name="LastName" PropertyName="Text" ConvertEmptyStringToNull="true" />
<asp:ControlParameter ControlID="SearchFirstName" Name="FirstName" PropertyName="Text" ConvertEmptyStringToNull="true" />
<asp:ControlParameter ControlID="SearchEmail" Name="Email" PropertyName="Text" ConvertEmptyStringToNull="true" />
<asp:ControlParameter ControlID="SearchAddress" Name="Address" PropertyName="Text" ConvertEmptyStringToNull="true" />
<asp:ControlParameter ControlID="SearchComment" Name="Comment" PropertyName="Text" ConvertEmptyStringToNull="true" />
</FilterParameters>
</asp:SqlDataSource>MY CODEBEHIND Dim FilterExpr As String If SearchLastName.Text = "" And _ SearchFirstName.Text = "" And _ SearchEmail.Text = "" And _ SearchComment.Text = "" And _ SearchAddress.Text = "" Then lblMessage.Text = "You didn't enter any search parameters. Please try Again." Me.GridViewSearch.DataSourceID = "" Exit Sub Else Me.GridViewSearch.DataSourceID = "SqlDataSource1" End If FilterExpr = "" If SearchLastName.Text <> "" Then FilterExpr = FilterExpr & "LastName Like '" & _ SearchLastName.Text & "%" & "' AND " End If If SearchFirstName.Text <> "" Then FilterExpr = FilterExpr & "FirstName Like '" & _ SearchFirstName.Text & "%" & "' AND " End If If SearchEmail.Text <> "" Then FilterExpr = FilterExpr & " Like '" & _ SearchEmail.Text & "%" & "' AND " End If If SearchComment.Text <> "" Then FilterExpr = FilterExpr & "[Comments] Like '" & "%" & _ SearchComment.Text & "%" & "' AND " End If If SearchAddress.Text <> "" Then FilterExpr = FilterExpr & "[Address] Like '" & "%" & _ SearchAddress.Text & "%" & "' AND " End If If Right(FilterExpr, 4) = "AND " Then FilterExpr = Left(FilterExpr, Len(FilterExpr) - 4) End If Try Me.SqlDataSource1.FilterExpression = FilterExpr Me.SqlDataSource1.DataBind() Me.GridViewSearch.DataBind() Me.lblMessage.Text = Me.SqlDataSource1.FilterExpression Catch objException As SqlException Dim objError As SqlError For Each objError In objException.Errors Response.Write(objError.Message) Next End Try End Sub
MY SPROCGO
ALTER PROCEDURE [dbo].[ClientSearch]
AS
SELECT C.ClientID, C.FirstName, C.LastName, A.Address,
C.Comments, C.EMail
FROM tblClient C INNER JOIN
tblClientAddresses A ON C.ClientID = A.ClientID
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Feb 16, 2008
I have a SQLDatasource control on a web page. It is the datasource for a gridview control.I want the gridview to show all jones if the FirstName textbox is left blank or empty. Right now I have to put a % in the FirstName textbox to get what I want. If I make the FirstNameTextBox empty or remove the % from the FirstNameTextbox it returns all the names in the database no matter what the last name is.How do I get it to work without having to use the % in the FirstName Textbox? THANKS!FilterExpression="LastName LIKE '%{0}%' and FirstName LIKE '%{1}%'"><FilterParameters> <asp:ControlParameter ControlID="LastNameTextBox" Name="LastName" PropertyName="Text" DefaultValue="" /> <asp:ControlParameter ControlID="FirstNameTextBox" Name="FirstName" PropertyName="Text" DefaultValue="" /></FilterParameters>
Last Name: Jones___________First Name: %_____________FILTERBUTTON
GridviewLast Name First NameBob JonesBill Jones
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Aug 31, 2007
How does one programmatically retrieve the results from a sqldatasource that has had a filterexpression applied to it?
Let me elaborate, here is my code:
SqlDataSource1.FilterExpression = "MenuType = 'myfilteredvalue'"
Dim _dv As DataView = CType(SqlDataSource1.Select(DataSourceSelectArguments.Empty), System.Data.DataView)
_dv.Table.TableName = "Menu" Dim ds As New DataSet("Menus") ds.Tables.Add(_dv.Table.Copy()) 'Add relation: ParentID under MenuID
Dim relation As New DataRelation("ParentChild", ds.Tables!Menu.Columns!MenuID, ds.Tables!Menu.Columns!ParentID, True) relation.Nested = True
ds.Relations.Add(relation)
What I'm doing is, I have a sqlDataSource that pulls all the data from my DB. With this data in the sqlDataSourceSource, I want to then populate an XMLDatasource (via a dataset) with only the records I need, i.e. the filter. However, after I apply my filter above, the sqlDataSoruce still contains all the records. I thought maybe if I did a sqlDataSource.Bind() after my SqlDataSource.FilterExpression, but that didn't do anything either.In laymans terms:I want to say something like: dataset = sqldatasource.filter(my filter expression).
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Mar 18, 2008
I am using the FilterExpression of an SqlDataSource object to filter the rows of a gridview. It works with searching text values but I cannot for the life of me figure out to get it to work with dates. The following is what I do for character searches: SomeDataSource.FilterExpression = fieldToSearch + " LIKE '%" + SearchTextBox.Text + "%'"; This works. However when I try to search for dates using the following it doesn't work (startDate and endDate are DateTime objects):SomeDataSource.FilterExpression = fieldToSearch + " BETWEEN #" + startDate.ToString("yyyy-MM-dd") + "# AND #" + endDate.ToString("yyyy-MM-dd") + "#";// or
SomeDataSource.FilterExpression = fieldToSearch + " = #" + startDate.ToString("yyyy-MM-dd") + "#";// or
SomeDataSource.FilterExpression = fieldToSearch + " = #'" + startDate.ToString("MM/dd/yyyy HH:mm:ss") + "'#";
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Apr 25, 2008
I facing a problem when i want to modified the sqldatasource.filterExpression while trigger sqldatasource.selecting event. 1 Protected Sub SqlDsProduct_Selecting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceSelectingEventArgs)
2 Dim SqlDsProduct As SqlDataSource = CType(CompleteGridView1.DetailRows(0).FindControl("SqlDsProduct"), SqlDataSource)
3 SqlDsProduct.FilterExpression = Session("filter") ' filter i add up after user press search button
4 End subActually i'm using the CompleteGridview, which i downloaded from the web. the "SqlDsProduct" i reffering to is inside the CompleteGridView1. I'm using complet grid view because i want the hierarchy look for the gridview. So please help me how i gonna change the filter expression of the 2nd sqldatasource inside detailsTemplate of the completeGridview. Thank you. best regardvince
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Jan 25, 2007
Hi,I need some help here. I have a SELECT sql statement that will query the table. How do I get the return value from the sql statement to be assigned to a label. Any article talk about this? Thanks geniuses.
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Dec 30, 2006
How do I programically (in the code-behind-file) assign a value from the database to a variable using a sqldatasource?...
I will do something like this:
Dim MyCity as string = SqlDataSource.MyCityColumnInTheDatabase
(The sqldatasource select everything in my "CityTable")
Hope you understand what I mean...
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Mar 13, 2007
i have an sqldatasource which runs a select command. How does one access the results in the codebehind, that is on page load set Label1 to value returned from the datasource. Please note that there will only ever be one value returned by the datasource This is fairly urgent so any help is needed quick thanks in advanceIlan
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Mar 3, 2006
Can you access a SQLDatasource in the code-behind?
Example: label1.text = sqldatasource.field
I am just migrating apps to ASP.NET 2.0...
Confused as to the best approach for paramaterized data access and binding to labels.
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Jun 16, 2006
Hi,
I have a problem with the <asp:SqlDataSource. The thing that I try to do is to create a SQL statement. I am not sure if this can be done or not ( just started asp.net).
Something like this:
<%
Dim Test1 As String
Dim Test2 As String
Dim Test3 As String
Dim Test4 As String
Test1 = Request("xmbr")
Test2 = Request("xSEL")
Test3 = Request("xpro")
Test4 = "SELECT [jedan], [dva], [tri], [cetiri], [pet] FROM [pet1] where " & (Test1) & " " & (Test2) & "'" & (Test3) & "'"
%>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:FinGateConnectionString %>" SelectCommand="<%= Test4%>">
The problem is that is giving me an error that I can’t figure out.
-------------------------------------------------
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near '<'.Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
-------------------------------------------------
Thanks.
Nbdg_28
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Nov 19, 2006
Hi,
I have the following Sql Data Source that I wish to bring back on my page:
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:FrogConnectionString %>"
SelectCommand="ProposalsCheckNewCustomerData" SelectCommandType="StoredProcedure">
<SelectParameters>
<asp:FormParameter FormField="MaritalStatusID" Name="MartialStatusID" Type="Int32" />
<asp:FormParameter FormField="LivingStatusID" Name="LivingStatusID" Type="Int32" />
<asp:FormParameter FormField="DealerID" Name="DealerID" Type="Int32" />
<asp:FormParameter FormField="VehicleTypeID" Name="VehicleTypeID" Type="Int32" />
<asp:FormParameter FormField="FinanceTypeID" Name="FinanceTypeID" Type="Int32" />
<asp:FormParameter FormField="MediaSourceID" Name="MediaSourceID" Type="Int32" />
<asp:FormParameter FormField="DealerContactID" Name="DealerContactID" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
The recordset brings back 7 values that I wish to populate into 7 Labels.
1. Should the SqlDataSource be on the page (between the Head tags) or within the Page_Load command of the Page Behind ?- If its on the page behind do any of you have any sample code to show me how to get the recordset up and running ?
2. How would I bind the results to a label ?- Within my old asp pages it was simple (I'm not saying its not simple here, I am still getting my head around vb.net)- eg <%=rsX("MaritalStatus")%> I guess its something very similar
Thanks for any pointersFizzystutter
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Feb 18, 2007
My code behind file builds a select statement and I would like to fill an SqlDataSource control with it. Can some show me an example of how I might do that? Maybe something like this?
Me.SqlDataSourceSearchResult.ConnectionString = "ConnectStr"
Me.SqlDataSourceSearchResult.SelectCommand = "SelectStatement"
gvSearchResult.DataSource = Me.SqlDataSourceSearchResult
gvSearchResult.DataBind()
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May 30, 2007
Hi guys,
I have following query in stored procedure Select ContractId, Version, CreateDate, body, IsCurrentFrom CRM_Contracts where ContractId=@ContractId I am trying to access the value of IsCurrent field in Code behind using sqlDataSource to hide a radiobutton list in Formview control's when it is in Edit Mode. How can i do this.
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Dec 30, 2007
Hi All
It´s my DropDownList data source from my page1.aspx:
<asp:DropDownList ID="ddlChampionships" runat="server" DataSourceID="sdsSearchChampionships" DataTextField="name" DataValueField="id_championship"> </asp:DropDownList><asp:SqlDataSource ID="sdsSearchChampionships" runat="server" ConnectionString="<%$ ConnectionStrings:LocalSqlServer %>"
ProviderName="System.Data.SqlClient" SelectCommand="SELECT * FROM [Tupi_Campeonatos]"></asp:SqlDataSource>
When I put a new championship name in a TextBox and click on the button "ADD", this button event click is called:
Protected Sub btAddChampionship_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btAddChampionship.Click
insertNewChampionshipIntoDataBase()
End Sub
The Page then reloads but my DropDownList is not updated. The way I found to do it is to put the DDList update code after the calling of the insertNewChampionshipIntoDataBase() method, but how???
thnx
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Jan 11, 2006
Hello!
I would like to set the SqlDataSource in the code behind file and not to have it in the aspx file. How can I do that?
Regards,
Gato Gris
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Apr 21, 2006
I have a sqldatasource in the markup. This is in turn connected to a Gridview. I use Eval to retrieve the database information in the markup but I also need the Eval information in code behind. How can I do this?
I got this far but how (if it's possible this way) can I retrive it?
Protected Sub Test(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
If (e.Row.RowType = DataControlRowType.DataRow) Then
this is where i want to get the "MyData" value from the database.
End If
........
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
DataKeyNames="test" DataSourceID="SqlDataSource1" UseAccessibleHeader="False" GridLines="None" ShowHeader="False">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:HiddenField ID="Hiddenvalue" runat=server Value='<%# Eval("MyData") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
using VB..
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May 25, 2007
Hi All, Maybe because it's Friday afternoon and I can't think clearly anymore... A really (I guess) simple problem: DataView with SqlDataSource <asp:DataList ID="DataList1" runat="server" DataSourceID="SqlDataSource1"> <ItemTemplate> <asp:Label ID="id" runat="Server" Text='<%# Eval("ID")%>' /> </ItemTemplate> </asp:DataList> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:MyConnectionString %>" SelectCommand="GetItem" SelectCommandType="StoredProcedure"> </asp:SqlDataSource> Now, what I have to do is to pass two parameters to the stored procedure: 1) ProviderUserKey2) Int ValueBut the question becomes "how"?Even if I define: <SelectParameters> <asp:Parameter Name="I_GUID" /> <asp:Parameter Name="I_TYPE" Type="Int32" DefaultValue="1" /> </SelectParameters>I need to set the parameters from code behind.... Thanks for any suggestions Adam
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Jul 15, 2007
how do i pass the paramenters and storedprocedure to dataview from code-behind?
the below code have sqldatasource control but i want to pass through code-behind everything...
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"
EmptyDataText="There are no data records to display." DataKeyNames="NewsId">
<Columns>
<asp:BoundField DataField="NewsId" HeaderText="NewsId" InsertVisible="False" ReadOnly="True"
SortExpression="NewsId" />
<asp:BoundField DataField="PostDate" HeaderText="PostDate" SortExpression="PostDate" />
<asp:BoundField DataField="PostedBy" HeaderText="PostedBy" SortExpression="PostedBy" />
<asp:BoundField DataField="PostedByName" HeaderText="PostedByName" SortExpression="PostedByName" />
<asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
<asp:BoundField DataField="Body" HeaderText="Body" SortExpression="Body" />
<asp:BoundField DataField="LastUpdated" HeaderText="LastUpdated" SortExpression="LastUpdated" />
<asp:CheckBoxField DataField="IsVisible" HeaderText="IsVisible" SortExpression="IsVisible" />
</Columns>
</asp:GridView> i have storedprocdure which accepts 4 parameters 3 paramenters which user will supply and 1 parameter will be supplied from code-behindwhat i mean by that is:the 4 parameters storedprocedure accepts is:empid, start_date, end_date (user will supply those 3 parameters)internal_id - which internally pass along with other 3 parmeterssomething like this:internal_id, empid, start_date, end_dateany thoughts?thanks.
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Aug 18, 2007
I have <asp:SqlDataSource> in aspx page that is being used by an updateable GridView. However, there are a couple fields in the dataset that contain filenames that I want to access directly in code and place them into some image tags on the page. This line should give me access to the dataset but how to I access the fields?
Dim myDataSource As DataView = DirectCast(SqlDataSourceGridView.[Select](DataSourceSelectArguments.Empty), DataView)
When the SqlDataSource is a DataReader I would access it with the code below but since this SqlDataSource is a DataSet I can't access it with this code.If myDataSource.Read Then If Convert.IsDBNull(myDataSource("CusAgentPhoto")) Then ImageAgent.ImageUrl = "/photos/nophoto.gif" Else ImageAgent.ImageUrl = AgentImagePath & myDataSource("CusAgentPhoto").ToString End If If Convert.IsDBNull(myDataSource("CusCompanyLogo")) Then ImageCompany.ImageUrl = "/photos/nophoto.gif" Else ImageCompany.ImageUrl = OfficeImagePath & myDataSource("CusCompanyLogo").ToString End IfEnd If What would be the correct way to get at the DataSet fields that contain the filenames?
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Jul 14, 2006
Can someone show me how to use SqlDataSource to call stored procedure in a c# class (a support class for aspx) and not in aspx or code-behind?
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Feb 1, 2007
i have a sqldatasource on my asp.net page -- select * from table where id = @id
i want to set the @id in the backend and set the result to textbox1.text
how do i do this?
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Mar 7, 2007
Hi,
say I have two Sqldatasources objects:SqlDataSource1 and SqlDataSource2....
Does anybody know how can I alter programmatically these two sqldatasources in a gridview?
Thanks!!!
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Aug 15, 2007
hi, i have a .aspx.cs code page file and i wanna to send some parameters to sqldatasource in page_load event.i wrote this line of code but it errors that the System.Web.UI.Webcontrols.parameters is a type and not a namespace.here my code:</p><p> </p><pre class="alt2" dir="ltr" style="border: 1px inset ; margin: 0px; padding: 6px; overflow: auto; width: 640px; height: 226px; text-align: left;">if (Session["membartype"].tostring() == "siteadmin1") SqlDataSource1.SelectCommand ="SELECT DocumentID, DocumentCode, DocumentDate,RequestCode, Delivery, Expr1,CityCode, Title FROM (SELECT dbo.EnterDocument.DocumentID, dbo.EnterDocument.DocumentCode, dbo.EnterDocument.DocumentDate,dbo.EnterDocument.RequestCode, dbo.EnterDocument.Delivery, dbo.EnterDocument.EnterType AS Expr1,dbo.EnterDocument.codecity AS CityCode, dbo.Location.Title FrOM dbo.Location RIGHT OUTER JOIN dbo.EnterDocument ON dbo.Location.codecity = dbo.EnterDocument.codecity) AS T1";ParameterCollection parameter=new ParameterCollection[7]; parameter.Add(DocumentID,text,TextBox1.Text); parameter.Add(DocumentCode,text,TextBox4); parameter.Add(FromDocumentDate,text,TextBox6); parameter.Add(untilDocumentDate,text,TextBox5); parameter.Add(PersonID,SelectedValue,DropDownList2); parameter.Add(EnterTypeID,SelectedValue,DropDownList3); parameter.Add(usercode,String,usercode); SqlDataSource1.SelectParameters.Add(parameter); GridView1.DataBind();</pre><p> thanks,M.H.H
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Apr 14, 2008
Is there any way I can use a variable from my code behind file in the UpdateCommand of a sqlDataSource? I have tried
<%$ strUserGuid %>and<% strUserGuid %>
any help appreciated.Thanks
Dave
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Jan 1, 2006
How do I access sqldatasource data values in code behind and bind them to strings or texboxes etc. as oposed to using Eval in the markup?
I can create a new database connection, but I would like to use the data values from the autogenerated sqldatasource control
Many thanks,
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Mar 9, 2006
Hi all
I have a GridView on an aspx page, that is enabled for editing, deletion and sorting.
In the Page_Load event of the aspx page, i add a SqlDataSource to the page, and bind the source to the GridView.
When i click the update, or delete button, it makes a PostBack, but nothing is affected. I'm sure this has got something to do with the parameters.
First, i tried having the GridView.AutoGenerateColumns set to True. I have also tried adding the columns manually, but no affect here either.
The code for setting the commands, and adding the SqlDataSource to the page are as follows:
string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; string strProvider = ConfigurationManager.ConnectionStrings["ConnectionString"].ProviderName; string selectCommand = "SELECT * FROM rammekategori"; SqlDataSource ds = new SqlDataSource(strProvider, strConn, selectCommand); ds.ID = "RammeKategoriDS"; ds.UpdateCommand = "UPDATE rammekategori SET Kategoribeskrivelse = @Kategoribeskrivelse WHERE (Kategorinavn = @Kategorinavn)"; ds.DeleteCommand = "DELETE FROM rammekategori WHERE (Kategorinavn = @Kategorinavn)"; Parameter Kategorinavn = new Parameter("Kategorinavn", TypeCode.String); Parameter Kategoribeskrivelse = new Parameter("Kategoribeskrivelse", TypeCode.String); ds.UpdateParameters.Add(Kategorinavn); ds.UpdateParameters.Add(Kategoribeskrivelse); ds.DeleteParameters.Add(Kategorinavn);
Page.Controls.Add(ds);
SqlDataSource m_SqlDataSource = Page.FindControl("RammeKategoriDS") as SqlDataSource;
if (m_SqlDataSource != null) { this.gvRammeKategorier.DataSourceID = m_SqlDataSource.ID; }
As mentioned - no affect at all!
Thanks in advance - MartinHN
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Nov 27, 2006
Hi you all,
In abc.aspx, I use a GridView and a SqlDataSource with a SelectCommand. The GridView's DataSourceID is the SqlDataSource.
In abc.aspx.cs, I would like to use an IF statement in which if a criterion is not satistied then I will use the SqlDataSource with another SelectCommand string. Unfortunately, I have yet to know how to write code lines in order to do that with the SqlDataSource. Plz help me out!
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Jun 9, 2007
There are so many ways to use database in asp.net/ado.net, I'm a bit confused about their difference from the performance point of view.So apparently SqlDataSource in DataReader mode is faster than DataSet mode, at a cost of losing some bolt-on builtin functions.What about SqlDataSource in DataReader mode vs manual binding in code? Say creating a SqlDataSource ds1 and set "DataSourceID" in Gridview, vs manually creating the SqlConnection, SqlCommand, SqlDataReader objects and mannually bind the myReader object to the gridview with the Bind() method.Also Gridview is a very convenient control for many basic tasks. But for more complex scenarios it requires lots of customization and modification. Now if I do not use gridview at all and build the entire thing from scratch with basic web controls such as table and label controls, and mannually read and display everything from a DataReader object, how's the performance would be like compared to the Gridview-databind route?
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Jul 20, 2007
Hi, I am a newbie in using ASP.NET 2.0 and ADO.NET. I wrote a hangman game and want to record statistics at the end of each game. I will create and update records in the database for each authenticated user as well as a record for the Anonymous, unauthenticated user. After a win or loss has occurred, I want to programmatically use the SQLDataSource control to increment the statistics counters for the appropriate record in the database (note I don't want to show anything or get user input for this function).
I need a VB.NET codebehind example that will show me how I should set up the parameters and update the appropriate record in the database. Below is my code. What happens now is that the program chugs along happily (no errors), but the database record does not actually get updated. I have done many searches on this forum and on the general Internet for programmatic examples of an update sequence of code. If there is a tutorial for this online or a book, I'm happy to check it out.
Any help will be greatly appreciated.
Lambanlaa
CODE - Hangman.aspx.vb
1 Protected Sub UpdateStats()2 Dim playeridString As String3 Dim gamesplayedInteger, gameswonInteger, _4 easygamesplayedInteger, easygameswonInteger, _5 mediumgamesplayedInteger, mediumgameswonInteger, _6 hardgamesplayedInteger, hardgameswonInteger As Int327 8 ' determine whether player is named or anonymous9 If User.Identity.IsAuthenticated Then10 Profile.Item("hangmanplayeridString") = User.Identity.Name11 Else12 Profile.Item("hangmanplayeridString") = "Anonymous"13 End If14 15 playeridString = Profile.Item("hangmanplayeridString")16 17 ' look up record in stats database18 Dim hangmanstatsDataView As System.Data.DataView = CType(statsSqlDataSource.Select(DataSourceSelectArguments.Empty), System.Data.DataView)19 20 gamesplayedInteger = 021 gameswonInteger = 022 easygamesplayedInteger = 023 easygameswonInteger = 024 mediumgamesplayedInteger = 025 mediumgameswonInteger = 026 hardgamesplayedInteger = 027 hardgameswonInteger = 028 29 If hangmanstatsDataView.Table.Rows.Count = 0 Then30 31 ' then create record with 0 values32 statsSqlDataSource.InsertParameters.Clear() ' don't really know what Clear does33 statsSqlDataSource.InsertParameters("playerid").DefaultValue = playeridString34 statsSqlDataSource.InsertParameters("GamesPlayed").DefaultValue = gamesplayedInteger35 statsSqlDataSource.InsertParameters("GamesWon").DefaultValue = gameswonInteger36 statsSqlDataSource.InsertParameters("EasyGamesPlayed").DefaultValue = easygamesplayedInteger37 statsSqlDataSource.InsertParameters("EasyGamesWon").DefaultValue = easygameswonInteger38 statsSqlDataSource.InsertParameters("MediumGamesPlayed").DefaultValue = mediumgamesplayedInteger39 statsSqlDataSource.InsertParameters("MediumGamesWon").DefaultValue = mediumgameswonInteger40 statsSqlDataSource.InsertParameters("HardGamesPlayed").DefaultValue = hardgamesplayedInteger41 statsSqlDataSource.InsertParameters("HardGamesWon").DefaultValue = hardgameswonInteger42 43 statsSqlDataSource.Insert()44 End If45 46 ' reread the record to get current values47 hangmanstatsDataView = CType(statsSqlDataSource.Select(DataSourceSelectArguments.Empty), System.Data.DataView)48 Dim hangmanstatsDataRow As System.Data.DataRow = hangmanstatsDataView.Table.Rows.Item(0)49 50 ' set temp variables to database values51 gamesplayedInteger = hangmanstatsDataRow("GamesPlayed")52 gameswonInteger = hangmanstatsDataRow("GamesWon")53 easygamesplayedInteger = hangmanstatsDataRow("EasyGamesPlayed")54 easygameswonInteger = hangmanstatsDataRow("EasyGamesWon")55 mediumgamesplayedInteger = hangmanstatsDataRow("MediumGamesPlayed")56 mediumgameswonInteger = hangmanstatsDataRow("MediumGamesWon")57 hardgamesplayedInteger = hangmanstatsDataRow("HardGamesPlayed")58 hardgameswonInteger = hangmanstatsDataRow("HardGamesWon")59 60 ' update stats record61 'statsSqlDataSource.UpdateParameters.Clear()62 'statsSqlDataSource.UpdateParameters("playerid").DefaultValue = playeridString63 64 If Profile.Item("hangmanwinorloseString") = "win" Then65 66 statsSqlDataSource.UpdateParameters("GamesPlayed").DefaultValue = gamesplayedInteger + 167 statsSqlDataSource.UpdateParameters("GamesWon").DefaultValue = gameswonInteger + 168 Select Case Profile.Item("hangmandifficultyInteger")69 Case 170 statsSqlDataSource.UpdateParameters("EasyGamesPlayed").DefaultValue = easygamesplayedInteger + 171 statsSqlDataSource.UpdateParameters("EasyGamesWon").DefaultValue = easygameswonInteger + 172 Case 273 statsSqlDataSource.UpdateParameters("MediumGamesPlayed").DefaultValue = mediumgamesplayedInteger + 174 statsSqlDataSource.UpdateParameters("MediumGamesWon").DefaultValue = mediumgameswonInteger + 175 Case 376 statsSqlDataSource.UpdateParameters("HardGamesPlayed").DefaultValue = hardgamesplayedInteger + 177 statsSqlDataSource.UpdateParameters("HardGamesWon").DefaultValue = hardgameswonInteger + 178 End Select79 80 81 ElseIf Profile.Item("hangmanwinorloseString") = "lose" Then82 83 statsSqlDataSource.UpdateParameters("GamesPlayed").DefaultValue = gamesplayedInteger + 184 Select Case Profile.Item("hangmandifficultyInteger")85 Case 186 statsSqlDataSource.UpdateParameters("EasyGamesPlayed").DefaultValue = easygamesplayedInteger + 187 Case 288 statsSqlDataSource.UpdateParameters("MediumGamesPlayed").DefaultValue = mediumgamesplayedInteger + 189 Case 390 statsSqlDataSource.UpdateParameters("HardGamesPlayed").DefaultValue = hardgamesplayedInteger + 191 End Select92 End If93 94 statsSqlDataSource.Update()95 96 End Sub97
CODE - Hangman.aspx 1 <asp:SqlDataSource ID="statsSqlDataSource" runat="server" ConflictDetection="overwritechanges"
2 ConnectionString="<%$ ConnectionStrings:lambanConnectionString %>" DeleteCommand="DELETE FROM [Hangman_Stats] WHERE [PlayerID] = @original_PlayerID AND [GamesPlayed] = @original_GamesPlayed AND [GamesWon] = @original_GamesWon AND [EasyGamesPlayed] = @original_EasyGamesPlayed AND [EasyGamesWon] = @original_EasyGamesWon AND [MediumGamesPlayed] = @original_MediumGamesPlayed AND [MediumGamesWon] = @original_MediumGamesWon AND [HardGamesPlayed] = @original_HardGamesPlayed AND [HardGamesWon] = @original_HardGamesWon"
3 InsertCommand="INSERT INTO [Hangman_Stats] ([PlayerID], [GamesPlayed], [GamesWon], [EasyGamesPlayed], [EasyGamesWon], [MediumGamesPlayed], [MediumGamesWon], [HardGamesPlayed], [HardGamesWon]) VALUES (@PlayerID, @GamesPlayed, @GamesWon, @EasyGamesPlayed, @EasyGamesWon, @MediumGamesPlayed, @MediumGamesWon, @HardGamesPlayed, @HardGamesWon)"
4 OldValuesParameterFormatString="original_{0}" SelectCommand="SELECT PlayerID, GamesPlayed, GamesWon, EasyGamesPlayed, EasyGamesWon, MediumGamesPlayed, MediumGamesWon, HardGamesPlayed, HardGamesWon FROM Hangman_Stats WHERE (PlayerID = @playerid)"
5 UpdateCommand="UPDATE [Hangman_Stats] SET [GamesPlayed] = @GamesPlayed, [GamesWon] = @GamesWon, [EasyGamesPlayed] = @EasyGamesPlayed, [EasyGamesWon] = @EasyGamesWon, [MediumGamesPlayed] = @MediumGamesPlayed, [MediumGamesWon] = @MediumGamesWon, [HardGamesPlayed] = @HardGamesPlayed, [HardGamesWon] = @HardGamesWon WHERE [PlayerID] = @original_PlayerID AND [GamesPlayed] = @original_GamesPlayed AND [GamesWon] = @original_GamesWon AND [EasyGamesPlayed] = @original_EasyGamesPlayed AND [EasyGamesWon] = @original_EasyGamesWon AND [MediumGamesPlayed] = @original_MediumGamesPlayed AND [MediumGamesWon] = @original_MediumGamesWon AND [HardGamesPlayed] = @original_HardGamesPlayed AND [HardGamesWon] = @original_HardGamesWon">
6 <DeleteParameters>
7 <asp:Parameter Name="original_PlayerID" Type="String" />
8 <asp:Parameter Name="original_GamesPlayed" Type="Int32" />
9 <asp:Parameter Name="original_GamesWon" Type="Int32" />
10 <asp:Parameter Name="original_EasyGamesPlayed" Type="Int32" />
11 <asp:Parameter Name="original_EasyGamesWon" Type="Int32" />
12 <asp:Parameter Name="original_MediumGamesPlayed" Type="Int32" />
13 <asp:Parameter Name="original_MediumGamesWon" Type="Int32" />
14 <asp:Parameter Name="original_HardGamesPlayed" Type="Int32" />
15 <asp:Parameter Name="original_HardGamesWon" Type="Int32" />
16 </DeleteParameters>
17 <UpdateParameters>
18 <asp:Parameter Name="GamesPlayed" Type="Int32" />
19 <asp:Parameter Name="GamesWon" Type="Int32" />
20 <asp:Parameter Name="EasyGamesPlayed" Type="Int32" />
21 <asp:Parameter Name="EasyGamesWon" Type="Int32" />
22 <asp:Parameter Name="MediumGamesPlayed" Type="Int32" />
23 <asp:Parameter Name="MediumGamesWon" Type="Int32" />
24 <asp:Parameter Name="HardGamesPlayed" Type="Int32" />
25 <asp:Parameter Name="HardGamesWon" Type="Int32" />
26 <asp:Parameter Name="original_PlayerID" Type="String" />
27 <asp:Parameter Name="original_GamesPlayed" Type="Int32" />
28 <asp:Parameter Name="original_GamesWon" Type="Int32" />
29 <asp:Parameter Name="original_EasyGamesPlayed" Type="Int32" />
30 <asp:Parameter Name="original_EasyGamesWon" Type="Int32" />
31 <asp:Parameter Name="original_MediumGamesPlayed" Type="Int32" />
32 <asp:Parameter Name="original_MediumGamesWon" Type="Int32" />
33 <asp:Parameter Name="original_HardGamesPlayed" Type="Int32" />
34 <asp:Parameter Name="original_HardGamesWon" Type="Int32" />
35 </UpdateParameters>
36 <InsertParameters>
37 <asp:Parameter Name="PlayerID" Type="String" />
38 <asp:Parameter Name="GamesPlayed" Type="Int32" />
39 <asp:Parameter Name="GamesWon" Type="Int32" />
40 <asp:Parameter Name="EasyGamesPlayed" Type="Int32" />
41 <asp:Parameter Name="EasyGamesWon" Type="Int32" />
42 <asp:Parameter Name="MediumGamesPlayed" Type="Int32" />
43 <asp:Parameter Name="MediumGamesWon" Type="Int32" />
44 <asp:Parameter Name="HardGamesPlayed" Type="Int32" />
45 <asp:Parameter Name="HardGamesWon" Type="Int32" />
46 </InsertParameters>
47 <SelectParameters>
48 <asp:ProfileParameter Name="playerid" PropertyName="hangmanplayeridString" />
49 </SelectParameters>
50 </asp:SqlDataSource>
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Jan 7, 2008
Hello,
I am applying hourly differential backup to the backup server from production with the following command. This command makes the database on standby server into read only mode.
RESTORE DATABASE ARSYSTEM FROM DISK = 'E:SQL backup from productionsql_full_backup'
WITH MOVE 'arsystem' TO
'd:ardataarsystem.mdf' ,
MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,
STANDBY = 'E:SQL backup from productionSQL daily diff back up'
Now I want to run a command which will put the database in write mode. I have created a job which would make the datbase Write mode. This job runs successfully sometimes and fails sometimes. I need to ensure that the job always succeeds. When it fails, how do I troubleshoot and what is the possible fix?
Thanks in advance.
The error message is
Cannot apply the backup on device 'E:SQL backup from productionSQL daily diff back up' to database 'ARSYSTEM'. [SQLSTATE 42000] (Error 3136) RESTORE DATABASE is terminating abnormally. [SQLSTATE 42000] (Error 3013). The step failed.
The steps for the job are as follows with the failing step highlighted in bold.
copy /y "\172.31.9.12Remedy BackupackupSQL backupsql_full_backup" "E:SQL backup from productionsql_full_backup"
copy /y "\172.31.9.12Remedy BackupackupSQL backupSQL daily diff back up" "E:SQL backup from productionSQL daily diff back up"
xp_cmdshell 'net stop "bmc remedy action request system server"'
exec rp_kill_db_processes 'ARSYSTEM'
RESTORE DATABASE ARSYSTEM
FROM DISK = 'E:SQL backup from productionsql_full_backup'
WITH
MOVE 'arsystem' TO 'd:ardataarsystem.mdf' ,
MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,
NORECOVERY
Failing step
RESTORE DATABASE ARSYSTEM
FROM DISK = 'E:SQL backup from productionSQL daily diff back up'
WITH
MOVE 'arsystem' TO 'd:ardataarsystem.mdf' ,
MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,
RECOVERY
xp_cmdshell 'del /f "E:SQL backup from productionsql_full_backup"'
xp_cmdshell 'del /f "E:SQL backup from productionsql daily diff back up"'
xp_cmdshell 'net start "bmc remedy action request system server"'
I have scheduled the following hourly diffential restore job too which never fails.
RESTORE DATABASE ARSYSTEM FROM DISK = 'E:SQL backup from productionsql_full_backup'
WITH MOVE 'arsystem' TO
'd:ardataarsystem.mdf' ,
MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,
STANDBY = 'E:SQL backup from productionSQL daily diff back up'
EXEC MASTER..XP_CMDSHELL 'del /f "E:SQL backup from productionSQL daily diff back up"'
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Aug 25, 2006
I am new to ASP. I am trying to use "Filterexpression".
FilterExpression="(Address_no >= '@Startno') AND (Address_no <= '@Endno')" >
I could not get it work. Could someone help me? Here is my code.
__________________________________________________________________________________
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="FarmedStreet.aspx.vb" Inherits="FarmedStreet" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="gvFarm" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False"
BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px"
CellPadding="3" CellSpacing="2" DataKeyNames="StreetID" DataSourceID="dsfarm"
Font-Bold="False" Font-Names="Arial" Font-Size="11pt" PageSize="5">
<FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
<Columns>
<asp:CommandField ShowSelectButton="True">
<ItemStyle ForeColor="#00C000" />
</asp:CommandField>
<asp:BoundField DataField="StreetID" HeaderText="ID" InsertVisible="False" ReadOnly="True"
SortExpression="StreetID" />
<asp:BoundField DataField="StartNo" HeaderText="StartNo" SortExpression="StartNo" />
<asp:BoundField DataField="EndNo" HeaderText="Endno" SortExpression="EndNo" />
<asp:BoundField DataField="Street" HeaderText="Street" SortExpression="Street" />
<asp:BoundField DataField="Zip" HeaderText="Zip" ReadOnly="True" SortExpression="Zip" />
<asp:CheckBoxField DataField="IsFarming" HeaderText="?" SortExpression="IsFarming" />
<asp:CommandField ShowEditButton="True">
<ItemStyle ForeColor="#00C000" />
</asp:CommandField>
</Columns>
<RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
<PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
<HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
</asp:GridView>
<asp:SqlDataSource ID="dsfarm" runat="server" ConnectionString="<%$ ConnectionStrings:cnFarming %>"
SelectCommand="SELECT __Street.StreetID, __Street.Street, __Street.ZipID, __Street.IsFarming, __Street.StartNo, __Street.EndNo, __Zip.Zip FROM __Street INNER JOIN __Zip ON __Street.ZipID = __Zip.ZipID WHERE (NOT (__Street.StartNo IS NULL)) AND (NOT (__Street.EndNo IS NULL))">
</asp:SqlDataSource>
<asp:Button ID="btnResident" runat="server" BackColor="#00C000" Enabled="False" Font-Bold="True"
ForeColor="Yellow" Text="Resident" />
</div>
<asp:SqlDataSource ID="dsResidentA" runat="server" ConnectionString="<%$ ConnectionStrings:cnFarming %>"
SelectCommand="SELECT ProspectID, FName, LName, SAddress, SCity, SState, SZip, MAddress, MCity, MState, MZip, Bed, Bath, [S FT], phone, City, Address_no, Street, CatID, PropID, StreetID, ZipID, Apt FROM __Prospect WHERE (StreetID = @StreetID)"
FilterExpression="(Address_no >= '@Startno') AND (Address_no <= '@Endno')" >
<SelectParameters>
<asp:ControlParameter ControlID="gvFarm" Name="StreetID" PropertyName="SelectedValue" />
<asp:ControlParameter ControlID="gvFarm" Name="Startno" PropertyName="SelectedValue" />
<asp:ControlParameter ControlID="gvFarm" Name="Endno" PropertyName="SelectedValue" />
</SelectParameters>
</asp:SqlDataSource>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True"
AutoGenerateColumns="False" DataSourceID="dsResidentA" PageSize="5">
<Columns>
<asp:BoundField DataField="ProspectID" HeaderText="ProspectID" InsertVisible="False"
SortExpression="ProspectID" />
<asp:BoundField DataField="FName" HeaderText="FName" SortExpression="FName" />
<asp:BoundField DataField="LName" HeaderText="LName" SortExpression="LName" />
<asp:BoundField DataField="Address_no" HeaderText="Address_no" SortExpression="Address_no" />
<asp:BoundField DataField="Apt" HeaderText="Apt" SortExpression="Apt" />
<asp:BoundField DataField="PropID" HeaderText="PropID" SortExpression="PropID" />
</Columns>
</asp:GridView>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</form>
</body>
</html>
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