Programmatically Add ArrayList Into To Sqldatasource.
Jul 15, 2007
I am trying to add a number of dates into a Sql database. Basically I want the user to add the start and end date and then all the dates in between are are added to a database in unique records. I can create an ArrayList but I don't know how to bind it to an SqlDataSource
Dim startdate As DateTime = tbstartdate.Text
Dim enddate As DateTime = tbenddate.Text
Dim datediff As TimeSpan = enddate.Subtract(startdate)
Dim noofdays As Integer = datediff.Days
Dim ar As New ArrayList
Dim i
For i = 0 To noofdays
ar.Add(startdate.AddDays(i))
Next Sorry if this is a total noob question....
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Apr 17, 2007
Hello. Im trying to create an SQLDataSource control programmatically. I need to do this because I want to do some stuff on my MasterPage's 'Page_Init' event.
heres my code (Master.master.vb): Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
lblUser.Text = Page.User.Identity.Name
Dim PUser As New ControlParameter
PUser.ControlID = "lblUser"
PUser.Name = "LoginName"
PUser.PropertyName = "Text"
PUser.Type = TypeCode.String
PUser.DefaultValue = Page.User.Identity.Name
Dim SQLDS_Login As New SqlDataSource
SQLDS_Login.ID = "SQLDS_Login"
SQLDS_Login.ConnectionString = "I put conection string here. How do I use the one on my web.config?"
SQLDS_Login.SelectCommand = "SELECT [LoginID], [LoginName], [Role], [Status] FROM [myLogin] WHERE ([LoginName] = @LoginName)"
SQLDS_Login.SelectParameters.Add(PUser)
SQLDS_Login.SelectCommandType = SqlDataSourceCommandType.Text
GridView1.DataSource = SQLDS_Login
GridView1.DataBind()
End Sub
When i run, i get this error message:
The SqlDataSource control 'SQLDS_Login' does not have a naming container. Ensure that the control is added to the page before calling DataBind.
I never had any problem with Inserts, Updates and Deleting, but I have never made it work for Select when doing it programmatically.
Can you help me with this?
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Apr 27, 2006
I have a GridView bound to a SqlDataSource. On page load I would like to programmatically specify a SelectParameter value based on the role of the user. This SelectParameter will be used in my WHERE clause. The closest post I can find is http://forums.asp.net/thread/1233258.aspx but no answer was posted.
What code would I use to modify a SelectParameters value? Is it possible to reference a parameter by name (SqlDataSource1.SelectParameters["usertype"]) or does it have to be by index? (SqlDataSource1.SelectParameters[0])
Alternatively, perhaps I'm going about this in the wrong way, is there a better way to have dynamic GridView content based on the role of the user?
Thank you very much for your help.
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Oct 27, 2006
Background - I have a page that uses a numeric value stored in a Session object variable as the parameter for three different SQLDataSource objects, which provide data to two asp:Repeaters and an asp:DataList. Also, in the Page_Load, I use this value to to seed a stored procedure and an SQLDataReader to populate several unbound Labels. This works fine. In addition, I have a collection of 6 TextBoxes, an unbound Listbox, and two Buttons to allow the user to do searching and selection of potential matches. This basically identifies a new numeric value that I store in the Session variable and PostBack the page (via one of the buttons). This also works fine.Problem - I have been tasked with taking a different page and adding six textboxes to collect the search values, but to post over to this page, populate the existing search-oriented TextBoxes, adn programmatically triggering the search. Furthermore, I have to detect the number of matching records and, if only 1, have the Repeaters and DataList display the results based on the newly selected record's key numeric value, as well as populating the unbound Labels. I have managed to get all of this accomplished except for programmatically triggering the Repeaters and DataList "refresh". These controls only populate as expected if a button is clicked a subsequent time, which makes sense, since that would trigger a PostBack and the Page_Load uses the new saved numeric key value from the Session.My history in app development is largely from Windows Forms development (VB6), this is my second foray into Web Form dev with ASP.NET 2.0. I am willing to acceptthat what I am trying to do does not fit into the ASP environment, but I have to think that this is something that has been done before, and (hopefully) there is a way to do what I need. Any ideas, oh great and wise Forum readers? *smile*
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Jul 3, 2007
ello all
Would someone be so kind as to save me from getting balder through pulling my hair out.
My aim is to extract data from a database using SQLDataSource, then edit the data and update the database using the SQLDataSource.
I have achieve the problem of retrieving the data from the sqlDataSource:DataView openRemindingSeats = (DataView)SqlDataSource2.Select(DataSourceSelectArguments.Empty); //Int32 openRemindingSeats = SqlDataSource2.Select(DataSourceSelectArguments.Empty), DataView;
foreach (DataRowView rowProduct in openReminding) { //Output the name and price lbl_NumOfSeatsLeft.Text = rowProduct["Remaining"].ToString();
}
Within the sqlDataSource the sql code is as follows:SELECT [refNumber], [refRemaining] FROM [refFlights] WHERE ([refNumber] = @Number)
So at the moment my problems is being able to edit and update data to the same SELECTed data.Thank you for any help that you might have...
SynDrome
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Aug 1, 2007
Hi, All
I'm using Gridview and SqlDataSource to dynamically display the contents in different tables, as followed:
<% dataSource.ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["connectionString"]; dataSource.SelectCommand = "SELECT * FROM " + tableName; gridView.DataBind();
dataSource.UpdateCommand = "";%>
<asp:SqlDataSource ID="dataSource" runat="server"></asp:SqlDataSource><asp:GridView ID="gridView" runat="server" DataSourceID="dataSource" AllowPaging="True" AllowSorting="True" AutoGenerateEditButton="True" BorderColor="Silver" BorderStyle="Solid" BorderWidth="1px" CellPadding="3" PageSize="20" DataKeyNames="ID" OnRowDataBound="tableGridView_RowDataBound"> <HeaderStyle BackColor="#C0C0FF" /> <AlternatingRowStyle BackColor="#C0FFC0" /></asp:GridView>
The datasource take the "tableName" as argument to determine which table to display. My problem is I can't figure out a way to programmatically construct the UpdataCommand for the SqlDataSource. I try to get the field names from the HeaderRow, but all the cells are empty in this row.
Does anyone know what causes the problem or how to construct the UpdateCommand properly. Thanks!
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May 13, 2006
I am using SqlDataSource programmatically in my data access layer - mainly for convenience but it does generally work fine with no obvious performance issues.
The problem I have is with getting back an output parameter. I have an insert-type stored procedure (in Sql Server 2005) operating on a table with an identity column as the primary key:
ALTER PROCEDURE [dbo].[InsertAlbum](@ArtistID int, @Title nvarchar(70), @NewID int OUTPUT)ASDECLARE @err intINSERT INTO dbo.ALBUMS (ARTISTID, TITLE)VALUES (@ArtistID, @Title)SELECT @err = @@error IF @err <> 0 RETURN @errSET @NewID = SCOPE_IDENTITY()
This works fine when run from Sql Server Management Studio and @NewID has the correct value.
My data access code is roughly as follows:
dsrc = New SqlDataSource()dsrc.ConnectionString = ConnectionStringdsrc.InsertCommand = "InsertAlbum"dsrc.InsertCommandType = SqlDataSourceCommandType.StoredProcedureDim parms As ParameterCollection = dsrc.InsertParametersDim newid As IntegerAddParameter(parms, "ArtistID", TypeCode.Int32, ParameterDirection.Input, 0, album.ArtistID)AddParameter(parms, "Title", TypeCode.String, ParameterDirection.Input, 0, album.Title)Dim p As New Parameter("NewID", TypeCode.Int32)p.Direction = ParameterDirection.Outputparms.Add(p)Try Dim rv As Integer = dsrc.Insert() newid = parms("NewID") Return newidCatch ex As Exception Return -1End Try
The row is inserted into the database, but however I try to define and add the NewID parameter it never has a value.
Has anyone tried to do this and can tell me what I am doing wrong?
Jon
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Sep 8, 2006
I need to provide defaults and sometimes overrides for items in SQLDataSource's UpdateParameters. I am attempting to do this in a FormView's ItemUpdating and ItemInserting events as follows: //========================================================================
// FormView1_ItemUpdating:
//========================================================================
protected void FormView1_ItemUpdating(object sender, FormViewUpdateEventArgs e) {
// not sure if this is the bets place to put this or not?
dsDataSource.UpdateParameters["UpdatedTS"].DefaultValue = DateTime.Now.ToString();
dsDataSource.UpdateParameters["UpdatedUserID"].DefaultValue = ((csi.UserInfo)Session["UserInfo"]).QuotaUserID;
}
In the example above I am attempting to set new values for the parameters which will replace the existing values. I have found that using the DefaultValue property works ONLY if there is no current value for the parameter. Otherwise the values I specify are ingnored.The parameters of an ObjectDataSource provide a Value property but SQLDataSource parameters do not.How can I provide an override value without needing to place the value in the visible bound form element???If you can answer this you will be the FIRST person ever to answer one of my questions here!!!Thanks,Tony
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May 19, 2007
I just want to insert a record into a table using a SqlDataSource control. But I'm having a hard time finding examples that don't use data bound controlsI have this so far (I deleted the parts not related to the insert):<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:UserPolls %>" InsertCommand="INSERT INTO [PollAnswers] ([PollId], [AnswerText], [AnswerCount]) VALUES (@PollId, @AnswerText, @AnswerCount)" <InsertParameters> <asp:Parameter Name="PollId" Type="Int32" /> <asp:Parameter Name="AnswerText" Type="String" /> <asp:Parameter Name="AnswerCount" Type="Int32" /> </InsertParameters> </asp:SqlDataSource> This is the data source for a gridview control I have on the page. I could set up an SqlDataSource for this alone if I need to, but i don't know if it would help. From what I could find, in the code behind I should haveSqlDataSource2.Insert()and SqlDataSource2 will grab the parameters and insert the record. The problem is I need to set the Pollid (from a session variable) and AnswerText (from a text box) at run time. Can I do this?Diane
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Sep 9, 2007
Hey All for some reason I can not get this right and/or find what I am looking for.
I have an SQLDataSource with a PartID set as the filtered value in the Datasource Query.
I am trying to use code beside to set the value and I am failing...lol...
Here is my attempt at it,
SqlDataSource1.SelectParameters("PartID") = txtPartID.Text
Any help would be great!
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Nov 3, 2007
Hi
I think I've programmatically created a SqlDataSource - which is what I want to do; but I can't seem to access details from the source - row 1, column 1, for example????
If Not Page.IsPostBack Then
'Start by determining the connection string valueDim connString As New Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString)
'Create a SqlConnection instanceUsing connString
'Specify the SQL query
Const sql As String = "SELECT eventID FROM viewEvents WHERE eventID=17"
'Create a SqlCommand instanceDim myCommand As New Data.SqlClient.SqlCommand(sql, connString)
'Get back a DataSetDim myDataSet As New Data.DataSet
'Create a SqlDataAdapter instanceDim myAdapter As New Data.SqlClient.SqlDataAdapter(myCommand)
myAdapter.Fill(myDataSet)Label1.Text = myAdapter.Tables.Rows(0).Item("eventID").ToString() -??????????????
'Close the connection
connString.Close()
End Using
End IfThanks for any helpRichard
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Oct 10, 2006
Im ripping my hair out here.I need to access the field in a datasource control of use in non presentation layer code based actions.I know the I can use a code base connection and query but I dont see why i need to make two trips the the DB when the info is already available.The datasource is attached to a details view control and the details view control is nested in a loginview controlI've tried defining but all I can get in the header name of the field but not the dataitem, the dataitem causes an error help please jim
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Jun 20, 2007
I've found example code of accessing an SQLDataSource and even have it working in my own code - an example would be Dim datastuff As DataView = CType(srcSoftwareSelected.Select(DataSourceSelectArguments.Empty), DataView) Dim row As DataRow = datastuff.Table.Rows(0) Dim installtype As Integer = row("InstallMethod") Dim install As String = row("Install").ToString Dim notes As String = row("Notes").ToString The above only works on a single row, of course. If I needed more, I know I can loop it.The query in srcSoftwareSelected is something like "SELECT InstallMethod, Install, Notes FROM Software"My problem lies in trying to access the data in a simliar way when I'm using a SELECT COUNT query. Dim datastuff As DataView = CType(srcSoftwareUsage.Select(DataSourceSelectArguments.Empty), DataView) Dim row As DataRow = datastuff.Table.Rows(0) Dim count As Integer = row("rowcnt") The query here is "SELECT COUNT(*) as rowcnt FROM Software"The variable count is 1 every time I query this, no matter what the actual count is. I know I've got to be accessing the incorrect data member in the 2nd query because a gridview tied to srcSoftwareUsage (the SQLDataSource) always displays the correct value. Where am I going wrong here?
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Nov 27, 2007
I am sending a GUID to a form via the query string. If it exists I use helper functions to load most of the form text boxes. However, if it does not then a blank form is presented and the GUID is stored in a hidden field.
Regardless, I use this hidden field to populate a grid that is attached to a sqldatasource.
If I then add new datarows to the backend database programmatically, I cannot 'requery' the datasource to include those row upon a postback. I cannot seem to find a simple way to force the sqldatasource to rerun the query.
Can anyone help.
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Mar 7, 2008
Hello, I want to loop through the first 10 records that are showing in a gridview with several pages that is populated by a sqldatasource. I can loop through the sqldatasource and get the list of values, but I'm doing something wrong because the 10 records it prints out are not the same 10 records the user sees in the gridview...They can click a search button which changes the sort, and they can click on the column headings to change the sort order.
Where's the best place to put the looping code? I need the result to be the same as what the users sees.
1 Protected Sub GridView1_Sorted(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.Sorted2 Dim i As Integer = -13 Dim sTest As String = ""4 Dim vwExpensiveItems As Data.DataView = CType(SqlDataSource1.Select(DataSourceSelectArguments.Empty), Data.DataView)5 6 'Loop through each record7 i = -18 For Each rowProduct As Data.DataRowView In vwExpensiveItems9 i = i + 110 'Output the name and price11 If i > 9 Then12 Exit For13 End If14 sTest = rowProduct("employeeid")15 Response.Write("RowSorting " & i.ToString & " [" & sTest & "]<br>")16 Next17 End Sub18
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Sep 15, 2006
Hi i'm pretty new to this, how do i connect to my database a put all the values from one column into the arraylist. Any help and a easy example would be nice Thanks in advance Richard
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Jan 18, 2007
In my data access layer class I have Populate methods on the bottom.One of the the objects, color, is an ArrayList, how do I write that? private Product PopulateProduct(IDataReader r) { Product product = new Product(); product.BrandId = Convert.ToInt32(r["brandId"]); product.BrandName = Convert.ToString(r["brandName"]); product.Color = whatGoesHere? (r["color"]); return product; } thanks
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Apr 17, 2007
I have 3 strings delimitted by a * character that I would like to save to a database. Each string will always have the same number of elements.
strUserID = "1*2*3"
strCompanyID="12931*12937*12945"
strCompanyName="International Business Machines, Inc*Ford Motor Company*Delta Airlines"
What I need to do is to save each record like this
INSERT INTO tableA (UserID, CompanyID, CompanyName) VALUES (1, 12931, 'International Business Machines, Inc')
INSERT INTO tableA (UserID, CompanyID, CompanyName) VALUES (2, 12937, 'Ford Motor Company')
INSERT INTO tableA (UserID, CompanyID, CompanyName) VALUES (3, 12945, 'Delta Airlines')
I've done something like this before with a single string, but don't know how to handle 3 of them.
Dim strAlerts As String() = NothingstrAlerts = values.Split(",")Dim s As String For Each s In strAlerts SqlText = "INSERT INTO tableA (UserID, CompanyID, CompanyName) VALUES (" & lblUserID.Text & ", '" & lblCompanyID.Text & "','" & s & "')" cmd = New SqlCommand(SqlText, strSQLConn) cmd.ExecuteNonQuery() Next s
Thanks for any help
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Aug 13, 2005
Hi
I have an arraylist that contains the names of those userid's that i need to check in an online db to check out if they are online now.If the UserId column of the SqlTable matches any of the name of that of the arraylist, then i need to import the values of two corresponding fields say age, Nick etc.I would be very grateful to anyone who could kindly tell me how to do this in an Sql Query i.e How to actually send an arraylist into sql query or any other way around this problem.
Say the arraylist to be verified against the table is:public ArrayList BuddyList = new ArrayList();
Thank You.
Regards.
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Apr 10, 2006
I have an SQL command below that works fine
"SELECT sum(Preference) FROM [projectDB].[dbo].[Vote] group by preference;SqlDataReader datareader = cmdPres.ExecuteReader();ArrayList myArr = new ArrayList();
when i read the data in the values i get are10,14,10,17
I want to loop through the reader, then add the values to an arrayList. Then i want to check of the value in the arrayList is greater than 15 but it dosent work. I get an error message when i add sum(Prefernece) to the arraylist, it will not allow me.
while (dreader.Read()){myArr.Add(datareader["sum(Preference)"].ToString());if(myArr.??? > 15){Response.Write("Its greater than 15");}}
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Jan 4, 2007
Hi,
I have a custom task to execute a package. This task sets dynamically the values of the child package at runtime before execution of the child.
Everything works fine, as long as Im not trying to use an Object Variable in the child package, trying to fill with an ArrayList. Then, during package validation at runtime, the Properties of the custom task have NULL-Values. I don't know why all Properties got NULL or 0 (int), only adding an ArrayList-Property to the Task-Code.
The ArrayList gets initialized in the constructor of the Task. Values to add in execute(). But the process never gets to the execute()-Method, due to my check in validate() for null Values. So the List is initialized but empty.
Anyone an idea, maybe I'm doing something wrong at all. Anybody experiences with Object-Variables in Packages? A HowTo?
Thanks a lot
Thorsten
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Jul 23, 2007
What is the C# code I use to do this?
I'm guessing it should be fairly simple, as there is only one row selected. I just need to pull out a specific field from that row and then insert that value into a different SqlDataSource.
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Mar 8, 2007
i am using visual web developer 2005 with SQL Express 2005 with VB as the code behindi have one database and three tables in itfor manipulating each table i am using separate SqlDataSource() is it sufficient to use one SqlDataSource() for manipulating all the three tables ? i am manipulating all the tables in the same page only please help me
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Apr 4, 2006
I need to programmatically backup a database in SQL Server Express. I actually also need to programmatically restore it from a backup file. How can I do this programmatically? I know how to do simple ADO commands for simple db operations, but backup and restore sound like "meta" commands to me, and I don't know where to begin from.
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Apr 16, 2007
I'm building SSIS packages through code and I would like to set the properties of some custom tasks (not data flow tasks) to expressions. I've done some searches but turned up nothing. This is the only thing I'm hitting a brick wall on at the moment; Books Online has been excellent in detailing how to create packages via code up to this point.
For the sake of argument, let's say I want to set the SqlStatementSource property of an Execute SQL task to this value:
"INSERT INTO [SomeTable] VALUES (NEWID(), '" + @[User:omeStringVariable] + "')"
What would the code look like?
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Jun 9, 2007
Ok. So I have this ASP.NET page and I've programmatically taken a report from the report server and rendered it in PDF. Now I would like to take this a step further and save the report as a pdf document on the local machine.
So at this point I have a byte array representing the document, now how would I save this as a pdf on the local machine? I'm unaware of an ASP Response method to allow this and I'm unaware of a SSRS ReportingService method, but as I said I'm unaware...
Any ideas, thoughts, resources are all welcome.
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Aug 30, 2006
I've seen several post asking for that possibility, but all 've read, didn't help me.Some sing SQLDMO, other suggest to use SQLSMO, others only explaining to connect to a server and then do "CREATE DATABASE".I will do this within .Net. Connecting to a SQL Server 2005 and execute "CREATE DATABASE" I could realize.But how doing this with SQLExpress? Trying to do SqlConnection.Open with a non existing DB does not work., says "file not exists".Or do I only have the wrong connection string? Can someone post here an excample connection string, which works with a non existing database?Some hints I've read make me considering to use SQLSMO. But I don't have it on my computer. Where do I get it from? Any links would be nice.
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Sep 10, 2006
hi all... how can i change the collation of a table that i dynamically created during runtime??i wanna change the default collation to Arabic
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Oct 27, 2006
Hi ,Can we make a backup from a SQL-server 2000 database programmatically, using asp.net and then restore this backup programmatically ?
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Jan 10, 2007
Hi Guys, I have this SqlDataSource, that counts some records and sets it in "NotStartedBugs". How do I retrive "NotStartedBugs" programmatically?
<asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SELECT (SELECT COUNT(*) AS Expr1 FROM tickets WHERE (TicketType = 'Bug') AND (TicketStatus = 'Not Started')) AS NotStartedBugs"></asp:SqlDataSource>
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Feb 16, 2007
Hi,
I am using Visual Web Developer 2005 Express Edition.
I am trying to SELECT three information fields from a table when the Page_Load take place (so I select the info on the fly). The refering page, sends the spesific record id as "Articleid", that looks typically like this: "http://localhost:1424/BelaBela/accom_Contents.aspx?Articleid=2". I need to extract the "Article=2" so that I can access record 2 (in this example).
How do I define the SelectParameters or QueryStingField on the fly so that I can define the WHERE part of my query (see code below). If I remove the WHERE portion, then it works, but it seem to return the very last record in the database, and if I include it, then I get an error "Must declare the scalar variable @resortid". How do I programatically set it up so that @resortid contains the value that is associated with "Articleid"?
My code is below.
Thank you for your advise!
RegardsJan/*******************************************************************************
* RETRIEVE INFORMATION FROM DATABASE
*******************************************************************************/
// specify the data source
string connContStr = ConfigurationManager.ConnectionStrings["tourism_connect1"].ConnectionString;
SqlConnection myConn = new SqlConnection(connContStr);
// define the command query
String query = "SELECT resortid, TourismGrading, resortHits FROM Resorts WHERE ([resortid] = @resortid)";
SqlCommand myCommand = new SqlCommand(query, myConn);
// open the connection and instantiate a datareader
myConn.Open();
SqlDataReader myReader = myCommand.ExecuteReader();
// loop thru the reader
while (myReader.Read())
{
Label5.Text = myReader.GetInt32(0).ToString();
Label6.Text = myReader.GetInt32(1).ToString();
Label7.Text = myReader.GetInt32(2).ToString();
}
// close the reader and the connection
myReader.Close();
myConn.Close();
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Feb 14, 2008
I am trying to customize my update statement and this MUST happen in codebehind, otherwise I will be overwriting data. The following is updating the data that is should be. The problem is that eventhough my UpdateCommand is clear in my .aspx and there are no parameters set... It is STILL running it's own update and overwriting the information it isn't supposed to. From what I can tell, it is using a default. What can I do to prevent this?
SqlDataSource1.UpdateCommand = "UPDATE MyTable SET MyField1=@MyField1 WHERE MyField2=@MyField2 AND MyField3=@MyField3"SqlDataSource1.UpdateParameters.Add("MyField1", "CustomText")
SqlDataSource1.UpdateParameters.Add("Task_ID", "Parameter")SqlDataSource1.UpdateParameters.Add("Comments", "Parameter")
SqlDataSource1.Update()
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May 13, 2002
Great Monday Morning to one and all,
Setup: SQL7 w/SP4 running on W2K Pro
Table in Question:
I have a system that processes inserts that originate from automatic data collection subsystems on manufacuturing cells. The system processes about 2500 records a day. The system is isolated with no ready support or attention. My goal is to automate any and every reasonable admin task. My present activity centers on re-indexing the main table (receives the data from the inserts, supplies the data for web based reporting).
The table - tb_production_log - receives inserts that are time stamped and bear a Machine_id. The table has a clustered index built on the Machine_id (int) and Date_time (time of data's acquisition). The table only receives Inserts, the records are never Updated. No inserts are out of time sequence (no older records ever have to be 'wedged' in amongst existing records). Ulitmately, the table is tested daily for records with age > 365 days. Such records are Deleted.
For the past week, I have been running a monitoring stored procedure on my test box to track the fragmentation of the tb_production_log table. It's based on DBCC SHOWCONTIG with some extra tests. After capturing the SHOWCONTIG data, the sp runs a test query against the table to emulate a typical User report. I track the time this query takes. The query covers records over the last 7 days. (approx. 17,500 records involved). In addition, I track the time it takes Inserts to run. Inserts are done in batches from an external app. I get a RecordsPerSecond data point for each batch.
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