Multiple Sql Staements In SqlDataSource's Update Command
May 5, 2006
I have a gridview with a sqlDataSource with the SelectCommand as
"SELECT Movie.Title, Movie.Category, Movie.ReleaseDate, ItemForSale.Quantity, ItemForSale.HasUnLimitedQuantity FROM ItemForSale INNER JOIN Movie ON ItemForSale.ID = Movie.ID"
what kinda 'UpdateCommand' do I set so that ItemForSale is also updated from the grid? I tried two update statements seperated with a semicolon but that wouldn't work, any suggestions...
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Jun 13, 2006
Hi - I'm using .net2, and have a gridview, populated by a SQL Datasource (Edit, Insert, Delete, Select).
Like we all used to do with the datagrid, I've added text boxes into the footer, and a link button, which I'd like to use to fire the Update command.
How do I get the link button to trigger the update command?
Thanks, Mark
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Sep 1, 2006
I would like to introduce myself as ASP.Net 2.0 beginner. I face a problem when using gridview and sqldatasource.
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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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Aug 31, 2007
Hello all,
Ok, I finally got my SqlDataSource working with Oracle once I found out what Oracle was looking for. My next hurdle is to try and set the Update Command and Parameters dynamically from a variable or radiobutton list. What I'm trying to accomplish is creating a hardware database for our computers by querying WMI and sending the info to textboxes for insertion and updating. I got that part all working nicely. Now I want to send the Computer name info to a different table column depending on if it is a laptop or desktop. I have been tossing around 2 ideas. A radiobutton list to select what it is and change the SQL parameters or do it by computer name since we have a unique identifier as the first letter ("W" for workstation, "L" for Laptop). I'm not sure what would be easiest but I'm still stuck on how this can be done. I posted this same question in here a few days ago, but I didn't have my SqlDataSources setup like I do now, I was using Dreamweaver 8, it is now ported to VS 2005. Below is my code, in bold is what I think needs to be changed dynamically, basically i need to change DESKTOP to LAPTOP...Thanks for all the help I've gotten from this forum already, I'm very new to ASP.NET and I couldn't do this without all the help. Thanks again!
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:CAT %>"ProviderName="<%$ ConnectionStrings:CAT.ProviderName %>" SelectCommand='SELECT * FROM "COMPUTER"' UpdateCommand="UPDATE COMPUTER SET DESKTOP = :DESKTOP, TECH = :TECH, SERVICE_TAG = :SERVICE_TAG WHERE USERNAME=:USERNAME">
<UpdateParameters>
<asp:ControlParameter Name="USERNAME" ControlId="txtUserName" PropertyName="Text"/>
<asp:ControlParameter Name="SERVICE_TAG" ControlId="txtServiceTag" PropertyName="Text"/>
<asp:ControlParameter Name="TECH" ControlId="txtTech" PropertyName="Text"/>
<asp:ControlParameter Name="DESKTOP" ControlId="txtComputerName" PropertyName="Text"/>
</UpdateParameters>
</asp:SqlDataSource>
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Mar 18, 2005
hi,friends
we show record from multiple table using single 'selectcommand'.
like....
---------
select *
from cust_detail,vend_detail
---------
i want to insert value in multiple database table(more than one) using single 'insert command'.
is it possible?
give any idea or solution.
i want to update value in multiple database table(more than one) using single 'update command'
i want to delete value in multiple database table(more than one) using singl 'delete command'
it is possible?
give any idea or solution.
it's urgent.
thanks in advance.
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Oct 19, 2005
UPDATE #TempTableESR SET CTRLBudEng = (SELECT SUM(Salaries) from ProjectBudget WHERE Project = @Project)UPDATE #TempTableESR SET CTRLBudTravel = (SELECT SUM(Travels) from ProjectBudget WHERE Project = @Project)UPDATE #TempTableESR SET CTRLBudMaterials = (SELECT SUM(Materials) from ProjectBudget WHERE Project = @Project)UPDATE #TempTableESR SET CTRLBudOther = (SELECT SUM(Others) from ProjectBudget WHERE Project = @Project)UPDATE #TempTableESR SET CTRLBudContingency = (SELECT SUM(Contingency) from ProjectBudget WHERE Project = @Project)above is the UPDATE command i am using in one of my stored procedures. I have to SELECT from my ProjectBudget table 5 times to update my #TempTableESR table. is there an UPDATE command i can use which would let me update multiple fields in a table using one SELECT command?
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Feb 23, 2007
i am using visual web developer 2005 and SQL 2005 with VB as the code behindi am using INSERT command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString1").ToString() test.InsertCommandType = SqlDataSourceCommandType.Text test.InsertCommand = "INSERT INTO try (roll,name, age, email) VALUES (@roll,@name, @age, @email) " test.InsertParameters.Add("roll", TextBox1.Text) test.InsertParameters.Add("name", TextBox2.Text) test.InsertParameters.Add("age", TextBox3.Text) test.InsertParameters.Add("email", TextBox4.Text) test.Insert() i am using UPDATE command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString").ToString() test.UpdateCommandType = SqlDataSourceCommandType.Text test.UpdateCommand = "UPDATE try SET name = '" + myname + "' , age = '" + myage + "' , email = '" + myemail + "' WHERE roll 123 " test.Update()but i have to use the SELECT command like this which is completely different from INSERT and UPDATE commands Dim tblData As New Data.DataTable() Dim conn As New Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True") Dim Command As New Data.SqlClient.SqlCommand("SELECT * FROM try WHERE age = '100' ", conn) Dim da As New Data.SqlClient.SqlDataAdapter(Command) da.Fill(tblData) conn.Close() TextBox4.Text = tblData.Rows(1).Item("name").ToString() TextBox5.Text = tblData.Rows(1).Item("age").ToString() TextBox6.Text = tblData.Rows(1).Item("email").ToString() for INSERT and UPDATE commands defining the command,commandtype and connectionstring is samebut for the SELECT command it is completely different. why ?can i define the command,commandtype and connectionstring for SELECT command similar to INSERT and UPDATE ?if its possible how to do ?please help me
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Feb 25, 2004
Folks
I have two select statements which gives two counts ie two numbers.
select 'count' = count(*) from account
select 'count1' = count(*) from employee
I want to combine these two select statements and write one select statement where I can get two columns 'count' and 'count1' with the respective values.
The result should be EX:
count count1
3 5
Thanks
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Mar 1, 2004
Folks
I have three select statements. I want to display q_text based on
the respective where condition. How do i combine these three and write
as one select statement.
select q_text Questions from question
where new_account_flag = '1'
select q_text Questions from question
where disc_account_flag = '1'
select q_text Questions from question
where disc_account_flag = '0'
Remember that all the queries returns more than 1 value.
I tried to use
select (query1),
(query2),
(query3)
but because it is returning more than one value, there is error.
Can any suggest me any other syntax??
Thanks
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Aug 10, 2007
I am using <asp:SqlDataSource ID and for the Select Command, the following, where the WHERE clause ... for an exact match (=) works correctly:
SelectCommand="SELECT [PatientID], [MedRecord] , [Accession], [FirstName], [LastName], [Address1] FROM [ClinicalPatient] WHERE (LastName = @LastName) ORDER BY [LastName]DESC">
I would like to do a "LIKE" search where the LastName Parameter is matched using "LIKE". In this situation how would the syntax be written.... I tried:
LastName LIKE '%" & LastName & "%'"
But I get an error???? Any suggestions, please...
Thanks !!
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Oct 12, 2007
Hello all,
I am having problem to insert the record into database from sqldatasource control. my code is listed below, and i can't find anything why it cause the exception...
<asp:SqlDataSource ID="SqlDataSource1" runat="server" DataSourceMode="DataSet" ConnectionString="<%$ ConnectionStrings:WebsiteDataConnection %>" SelectCommand="SELECT * FROM [ServiceAgents]" InsertCommand="INSERT INTO ServiceAgents VALUES(@Ser_STATE, @Ser_CITY, @Ser_AGENT, @Ser_PHONE, @Ser_EQUIPMENT)"> <InsertParameters> <asp:FormParameter Name="Ser_STATE" FormField="TextBox_state"/> <asp:FormParameter Name="Ser_CITY" FormField="TextBox_city"/> <asp:FormParameter Name="Ser_AGENT" FormField="TextBox_agent"/> <asp:FormParameter Name="Ser_PHONE" FormField="TextBox_phone"/> <asp:FormParameter Name="Ser_EQUIPMENT" FormField="TextBox_equip" /> </InsertParameters> </asp:SqlDataSource>
The table has got the fields that needed for insert command, for example:
<table> <tr> <td>State:</td> <td> <asp:TextBox ID="TextBox_state" runat="server"></asp:TextBox> <asp:RequiredFieldValidator id="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox_state" Display="Static" ErrorMessage="Please enter a state." /> </td> </tr> <tr> <td>City:</td> <td> <asp:TextBox ID="TextBox_city" runat="server"></asp:TextBox> <asp:RequiredFieldValidator id="RequiredFieldValidator2" runat="server" ControlToValidate="TextBox_city" Display="Static" ErrorMessage="Please enter a city." /> </td> </tr> <tr> <td>Agent:</td> <td> <asp:TextBox ID="TextBox_agent" runat="server"></asp:TextBox> <asp:RequiredFieldValidator id="RequiredFieldValidator3" runat="server" ControlToValidate="TextBox_agent" Display="Static" ErrorMessage="Please enter a agent." /> </td> </tr> <tr> <td>Phone:</td> <td> <asp:TextBox ID="TextBox_phone" runat="server"></asp:TextBox> <asp:RequiredFieldValidator id="RequiredFieldValidator4" runat="server" ControlToValidate="TextBox_phone" Display="Static" ErrorMessage="Please enter a phone No." /> </td> </tr> <tr> <td>Equipment:</td> <td> <asp:TextBox ID="TextBox_equip" runat="server"></asp:TextBox> <asp:RequiredFieldValidator id="RequiredFieldValidator5" runat="server" ControlToValidate="TextBox_equip" Display="Static" ErrorMessage="Please enter a equipment." /> </td> </tr> <tr> <td></td> <td> <asp:Button ID="Button2" runat="server" Text="Add" OnClick="addEntry" BackColor="#FFFBFF" BorderColor="#CCCCCC" BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana" Font-Size="1.0em" ForeColor="#284775"/> </td> </tr> </table>
And in the code i just called: SqlDataSource1.Insert(); Then the page gives me the exception like:
Cannot insert the value NULL into column 'STATE', table 'WebsiteData.dbo.ServiceAgents'; column does not allow nulls. INSERT fails. The statement has been terminated.
But i actually input all the required text in the textbox.... Any idea guys?
Thanks
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Nov 15, 2007
I have a SqlDataSource object that is bound to a GridView control. I have configured the SqlDataSource with a default select command. Under certain values of query strings on the URL for this page (Default.aspx), I want to change the select command. So I put the statements in the Page_Load method for Default.aspx to define SqlDataSource1.SelectCommand. The changed SelectCommand works fine for the first page of GridView data and shows 5 GridView pages, but if I switch to one of the other pages, it seems to revert to the default SelectCommand (which generates 19 GridView pages). I assume I should put my code to change the SelectCommand somewhere else. Can someone help me with where to put it? Thanks!
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Nov 20, 2007
I get the following error, when I try to create a company. Any help would be appreciated. Error Code: Cannot insert the value NULL into column 'CompanyName', table 'Telemetry.dbo.Company'; column does not allow nulls. INSERT fails.The statement has been terminated. Here is my aspx file: <table> <tr ><td style="width:110px"><b>Company Name:</b></td><td ><asp:TextBox ID="CompanyName" Text="" runat="server" width="250px"/></td></tr> <tr><td ><b>Phone Number:</b></td><td ><asp:TextBox runat="server" ID="CompanyPhone" Text="" Width="250px"/></td></tr> <tr><td ><b>Company E-mail:</b></td><td ><asp:TextBox runat="server" ID="CompanyEmail" Text="" Width="250px"/></td></tr> <tr><td ><b>Street Address:</b></td><td><asp:TextBox runat="server" ID="AddressStreet" Text="" Width="250px"/></td></tr> <tr><td ><b>City :</b></td><td><asp:TextBox runat="server" ID="AddressCity" Text="" Width="200px"/></td></tr> <tr><td ><b>State/Province:</b></td><td><asp:TextBox runat="server" ID="AddressState" Text="" Width="150px"/></td></tr> <tr><td ><b>Zip Code:</b></td><td><asp:TextBox runat="server" ID="AddressZip" Text="" Width="150px"/></td></tr> <tr></tr> </table> <asp:Button ID="Submit" runat="server" OnClick="Submitinfo" /> <br /> <asp:SqlDataSource ID="sqlCreateCompany" runat="server" ConnectionString="<%$ ConnectionStrings:SqlServer1 %>" InsertCommand="INSERT INTO Company(CompanyName, CompanyPhone, CompanyEmail, AddressStreet, AddressCity, AddressState, AddressZip) VALUES (@CompanyName, @CompanyPhone, @CompanyEmail, @AddressStreet, @AddressCity, @AddressState, @AddressZip)" SelectCommand="SELECT [CompanyID], [CompanyName], [CompanyPhone], [CompanyEmail], [AddressStreet], [AddressZip], [AddressState], [AddressCity] FROM [Company]" > <InsertParameters> <asp:FormParameter Name="CompanyName" FormField="CompanyName"/> <asp:FormParameter Name="CompanyPhone" FormField="companyPhone" /> <asp:FormParameter Name="CompanyEmail" FormField="CompanyEmail" /> <asp:FormParameter Name="AddressStreet" FormField="AddressStreet" /> <asp:FormParameter Name="AddressCity" FormField="AddressCity" /> <asp:FormParameter Name="AddressState" FormField="AddressState" /> <asp:FormParameter Name="AddressZip" FormField="AddressZip" /> </InsertParameters> </asp:SqlDataSource> .....Behind the code.............. protected void Submitinfo(object sender, EventArgs e) { //TextBox t = (TextBox)FormView1.FindControl("CompanyName"); sqlCreateCompany.Insert(); } .........Database Company Table Design..............CompanyID int UncheckedCompanyName varchar(100) UncheckedCompanyPhone varchar(50) CheckedCompanyEmail varchar(100) CheckedAddressStreet varchar(100) CheckedAddressCity varchar(50) CheckedAddressState varchar(2) CheckedAddressZip varchar(5) CheckedCompanyLogo varchar(100) Checked
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Aug 4, 2006
hi i have an sqldatasource which has an insert command - a stored procedue is used.I have a text box with a button next to it . it is not in a datagrid.on the onclick event I would like to pass the value of the text box to the sqldatasource insert parameter ( it only expects this one parameter , and use the sqldatasource to do the insert basically doing a manual insert using the sqldatasource.does anyone know if this is possible thanks
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Aug 12, 2006
i need to dyanamically generate my SQL commands so to do that i am generating sqldatasource commands programmatically rather declaratively. SELECT commands seems to work fine but DELETE isnt doing anything, here is my code:
SqlDataSource sdsConsultant = new SqlDataSource();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
loadDataSet(); //it just loads dataset used by formview
initializeSDS();
}
}
protected void initializeSDS()
{
string strConnection = ConfigurationManager.ConnectionStrings["myDB"].ToString();
sdsConsultant.ConnectionString = strConnection;
//SELECT
sdsConsultant.SelectCommand = "SELECT * FROM Consultants WHERE (id=@id)";
QueryStringParameter id = new QueryStringParameter("id", "id");
sdsConsultant.SelectParameters.Add(id);
//DELETE
sdsConsultant.DeleteCommand = "DELETE * FROM Consultants WHERE (id=@id2)";
QueryStringParameter id2 = new QueryStringParameter("id2", "id");
sdsConsultant.DeleteParameters.Add(id2);
//UPDATE
Page.Controls.Add(sdsConsultant);
FormView1.DataSource = sdsConsultant;
FormView1.DataBind();
}
my formview control looks like:
<asp:FormView DefaultMode="Edit" ID="FormView1" runat="server" DataKeyNames="id"
OnItemDeleted="FormView1_ItemDeleted"
OnItemDeleting="FormView1_ItemDeleting">
the DELETE doesnt execute and the OnItemDeleted event doesnt do anything either. am i doing something wrong here? plz help
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Apr 24, 2007
hello everybody, i have a question to ask, suppose i have a sqldatasource, can i use it in a method??this is my case, i need to make a new method to count the rows in a datagrid, so i will have to read the sqldatasource. the problem is, how to retrieve it?? usually i use the built in sqldatasource_selected to count the rows.... is there any other way??
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May 26, 2007
My compiler says that the line in bold below is illegal. The error msg I'm getting is: No overload for method 'select' takes '0' arguments. How can I correct this error and execute a SELECT?
protected void Button1_Click(object sender, EventArgs e)
{
SqlDataSource2.Select ();
}
protected void SqlDataSource2_Selected(object sender, SqlDataSourceStatusEventArgs e)
{string strReadyFirstName = e.Command.Parameters["@FirstName"].Value.ToString();string strReadyLastName = e.Command.Parameters["@LastName"].Value.ToString();
}
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [User_ID], [User_Name], [FirstName], [LastName], [Company_Name], [Department_Name] FROM [CompanyDepartment] WHERE ([User_Name] = @User_Name)" OnSelected="SqlDataSource2_Selected">
<selectparameters>
<asp:sessionparameter DefaultValue="TheirUserName" Name="User_Name" SessionField="TheirUserName" Type="String" />
</selectparameters>
</asp:SqlDataSource>
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Jul 20, 2007
I have a GridView (that uses SqlDataSource1) and a Dropdownlist. Depending upon the value selected on the DropDownList I need to select different stored procedures for the gridview. The problem is that I can do it without taking SqlDataSource1 by using DataSet or DataTable. But, I need to Use SQLDataSource1 for easy way of Header SORTING. So, is there any way to change the SQLDatasource1.SELECT Command dynamically. So that, I can use different queries for the Single DataGrid. I have attached the sample code of the SqlDataSource1 I'm using. I need to change the Command i.e. SelectCommand="usp_reports_shortages" to "usp_reports_shortagesbyID" and "usp_reports_shortagesbyDate" depending on the value selected in the dropdownlist. So, is there any way to do this????<asp:SqlDataSource ID="SqlDataSource1"
runat="server"
ConnectionString="<%$
ConnectionStrings:TESTDrivercommunication %>"
SelectCommand="usp_reports_shortages" SelectCommandType="StoredProcedure">
<SelectParameters>
<asp:ControlParameter ControlID="lblDriver" Name="date1" PropertyName="Text" Type="DateTime" />
<asp:ControlParameter ControlID="lblTODate" Name="date2" PropertyName="Text" Type="DateTime" />
<asp:ControlParameter ControlID="DDlDriver" Name="driver" PropertyName="SelectedValue"
Type="Int32" />
<asp:SessionParameter Name="week" SessionField="s_week" Type="DateTime" />
</SelectParameters>
</asp:SqlDataSource>
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Dec 26, 2007
I have an SQLDataSource. The SQL is
SELECT UserName, Category, ItemDescription, Size, Price, Reduce, Donate, Sold, ItemNumber, SoldDate, SoldPrice, PrintedFROM Tags WHERE (Printed = @Printed1 OR Printed = @Printed2 OR Printed = @Printed3) ORDER BY ItemNumber DESCThe bit field "printed" can be NULL, True or False.In the Selecting event of the SQLDataSource I have the following to show ALL records. But it does not work. If I remove these parameters it show ALL records.
e.Command.Parameters("@Printed1").Value = Nothing 'ASP.NET 2.0 using Visual basice.Command.Parameters("@Printed2").Value = Truee.Command.Parameters("@Printed3").Value = False
What am I doing wrong???
Thanks
Craig
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Jan 11, 2008
I apologise if i have not posted this in the correct Topic before i start. But was uncertain where to post this query.
This is my first project in ASP.NET, MS Visual Web Developer 2005 Express and SQL Server 2005 Express. I have relatively little experience, so please bare with me.
I have managed to create a form that inserts data into a table and then inserts the Automatically Created Primary Key(as a foreign key) in another table. I have done this by inserting what is highlighted in red in the code of my InsertCommand below (Please scroll across to the end of the code):-InsertCommand="INSERT INTO [PrinterModel] ([Model], [PrinterMakeID], [CartridgeCode], [PartCode], [Duplex], [NIC], [Wireless], [Parallel], [USB], [Colour], [PrinterTypeID]) VALUES (@Model, @PrinterMakeID, @CartridgeCode, @PartCode, @Duplex, @NIC, @Wireless, @Parallel, @USB, @Colour, @PrinterTypeID) INSERT INTO [Model] ([PrinterModelID],[TypeID]) VALUES (@@IDENTITY, 3)" Can you see any problems that may arise from using this method. This project is an Asset Management System and will be used by no more than a handful of users. My Concern is the use of the @@IDENTITY (As it only stores the last Key used). Should I be using it here? If there is more than one user inserting into tables (Chances of this happening are very low), will the correct Primary key be insert to the table in the above code?Thank you for your comments.
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Apr 25, 2008
I am trying to implement an "advanced search" feature on my ASP.NET 2.0 web form. I have a GridView control and a SqlDataSource. The SqlDataSource control successfully retrieves data when the SelectCommand attribute is set in the aspx page. I need to make it so when a user clicks on a button, it can take a value from a text box and use it in the WHERE clause. I have tried setting the SelectCommand programmatically and then DataBinding but it never accepts the new SelectCommand. What can I do to fix this?
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May 10, 2006
I want to update two tables in one page. So I created two FormView bound on two SqlDataSource controls, and I create a Update button on the bottom of page. And I writen some codes as below:
btnUpate_Click(object sender, EventArgs e){
sqlDataSource1.Update();
sqlDateSource2.Update();}
But, the records haven't updated.
In SqlDataSource2_Updating() function, I found all the parameters is null.
So, how to modify my code to do it.
Zhang
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Feb 23, 2008
Hello all,I'm writing a site with one page that uses the session variable (User ID) to pick one user ID out of a comma separated list in the field Faculty. The default parameterized query designed in the SqlDataSource wizard only returns lines that contain an exact match:SELECT * FROM tStudents WHERE ([faculty] = @faculty) The query: SELECT * FROM tStudents WHERE ([faculty] LIKE '%userID%') works as I need when I hard code the query with a specific user ID into the SqlDataSource in the aspx page. It will not work if I leave the @faculty parameter in it:SELECT * FROM tStudents WHERE ([faculty] LIKE '%@faculty%') e.Command.Parameters works to replace the @Faculty with a user ID, but again, adding the single quote and percentage sign either causes errors or returns no results. I've tried several variations of: string strEraiderID = "'%" + Session["eRaiderID"].ToString() + "%'"; e.Command.Parameters["@faculty"].Value = strEraiderID;no results are returned, not even the lines returned with the default select query.How do generate the equivalent of SELECT * FROM tStudents WHERE ([faculty] LIKE '%userID%') into the SqlDataSource? Thanks much!
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Mar 8, 2007
HiI'm using a simple SqlDataSource to connect to a stored proc to delete a number of rows from different tables.In my SQL im using: DECLARE @table1Count int
DELETE FROM Table1 WHERE id = @new_id
SET @table1Count=@@rowcount
SELECT @table1Count I'm then using an input box and linking it to the delete control parameter. Then on a button click event i'm running SqlDataSource1.Delete() which all works fine. But how do i get the @table1Count back into my aspx page? Thanks
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Oct 2, 2007
Hi,
Hope you guys won't mind this rather newbie question. I'm writing a simple blog page for my website and have created a SqlDataSource which queries the database for a list of blog post titles (from the web.Blog table) and the number of comments (from the web.BlogComments table). The SqlDataSource control is:
<asp:SqlDataSource ID="sourceBlogArticles" ProviderName="System.Data.SqlClient" connectionString="<%$ ConnectionStrings:myDatabase %>" runat="server" SelectCommand="SELECT gb.blogID, gb.title, gb.description, gb.tags, gb.dateAdded, COUNT(gbc.blogID) AS noOfComments FROM web.Blog gb LEFT OUTER JOIN web.BlogComments gbc ON gb.blogID = gbc.blogID GROUP BY gb.blogID, gb.title, gb.description, gb.tags, gb.dateAdded ORDER BY gb.dateAdded"></asp:SqlDataSource>
This works perfectly well if each blog entry in the web.Blog table has associated comments in the web.BlogComments table. However, if there are no comments yet defined in the web.BlogComments table for that blogID then no row is returned in ASP.Net (as checked with a GridView control or similar linked to the data source to view what I get)
HOWEVER, I think the SELECT command IS correct: if I use the select command as a query in SQL Server Managment Studio Express, I do get the rows returned, with 0 for the number of comments which is what I would expect for that query:
blogID, title, description, tags, dateAdded, noOfComments
1, title 1, description for title 1, tag1, 2007-09-27 06:49:03.810, 32, title 2, description for title 2, tag2, 2007-09-27 06:49:37.513, 03, title 3, description for title3, tag3, 2007-10-02 18:21:30.467, 0
Can anyone help? The result from the SSMSE query is what I want, yet when I use the very same SELECT statement in my SqlDataSource I don't get any rows returned if the BlogComment count is zero (in the above example I get only the first row). Many thanks for any suggestions!
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Nov 26, 2006
Hi,
I placed several SqlDataSource objects on my page which work with the same database (same connection string).
As I know, connection operation to database is costly in the performance prespective.
Do these SqlDataSource controls work with the same connection object or each of them create his own connecton object?
If each create it's own, then can they be changed to work with one connection object?
Thanks
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Oct 8, 2007
Hi all,
I have few insertions statements in one datasource insert command, which i use for my user creation process adding new billing info shipping info and so on.
I've put this code in createuserwizard usercreated step with a try catch code. On the insertion if it doesnt work it deletes the user account.
Well lets say the first insertion went trough with out any problems, but the second one got blocked or didnt work length or any wierd on controled issue.
I was thinking of putting begin transaction end transaction statements in front and end of the statements but this can prevent the insert not to return error, which will prevent try catch to fire?
Basicly the idea is to do all insertions with the user creation, and if one goes down all the others gets reversed. (if possible single sqldatasource, just to make the code look clean)
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Sep 6, 2006
I'm new to ASP and ASP.NET so I used the Wizards in Visual Web Deverlopment Express 2005 to build the following code:<asp:DetailsView ID="DetailsView" runat="server" DataSourceID="TracksDataSource"
Height="50px" Width="125px" AutoGenerateEditButton="True" AutoGenerateRows="False">
<Fields>
<asp:BoundField DataField="pk_trackID" HeaderText="pk_trackID" ReadOnly="True" SortExpression="pk_trackID" />
<asp:BoundField DataField="trackName" HeaderText="trackName" SortExpression="trackName" />
<asp:BoundField DataField="trackPath" HeaderText="trackPath" SortExpression="trackPath" />
<asp:BoundField DataField="lyrics" HeaderText="lyrics" SortExpression="lyrics" />
</Fields>
</asp:DetailsView>
<asp:SqlDataSource ID="TracksDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:connectionString %>"
SelectCommand="SELECT * FROM [Tracks] WHERE ([pk_trackID] = @pk_trackID)" UpdateCommand="UPDATE [Tracks] SET [trackName] = @trackName, [trackPath] = @trackPath, [lyrics] = @lyrics WHERE [pk_trackID] = @pk_trackID" >
<UpdateParameters>
<asp:Parameter Name="trackName" Type="String" />
<asp:Parameter Name="trackPath" Type="String" />
<asp:Parameter Name="lyrics" Type="String" />
<asp:Parameter Name="pk_trackID" Type="String" />
</UpdateParameters>
<SelectParameters>
<asp:ControlParameter ControlID="TracksListBox" Name="pk_trackID" PropertyName="SelectedValue" Type="String" />
</SelectParameters>
</asp:SqlDataSource> However, when I click Edit, change something, and then Update it doesn't update the database. However, if I remove the DataField bindings and use the AutoGenerateRows feature it works fine.
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Nov 6, 2006
One of the requirements of the UpdateParameters for a GridView I'm building is that the fields that are being edited via EditItemTemplates are passed back to the UpdateParameter as XML. How would I go about combining the fields from the GridView/EditItems into an XML string that I can set as an asp:Parameter?
Thanks.
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Mar 15, 2007
OK guys, I'm sure I'm doing something stupid here but after 2 days I find myself extremely frusted... Any help would be appreciated
I'm tring to write an update procedure for an SqlDataSource control that will allow me to chage the primary key values of a record in the table. Everything seems to work fine with the exception of obtaining the old values (the primary key before its changed by the end user) during the update. I've read several articles on the web an in the forums on this topic. Much of it has to do with the .NET beta version alteration from "original_{0}" to "{0}". I believe those conversations do not describe my problem.
Anyhow, onto some source code. Here's the ASP source code for a grid view and sql data source. <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataKeyNames="productName,productURL" DataSourceID="SqlDataSource1" EmptyDataText="There are no data records to display.">
<Columns>
<asp:CommandField ShowSelectButton="True" />
<asp:BoundField DataField="productName" HeaderText="productName" ReadOnly="True"
SortExpression="productName" />
<asp:BoundField DataField="productURL" HeaderText="productURL" ReadOnly="True" SortExpression="productURL" />
<asp:BoundField DataField="productSupportURL" HeaderText="productSupportURL" SortExpression="productSupportURL" />
<asp:BoundField DataField="description" HeaderText="description" SortExpression="description" />
<asp:BoundField DataField="modified" HeaderText="modified" SortExpression="modified" />
<asp:BoundField DataField="userid" HeaderText="userid" SortExpression="userid" />
<asp:BoundField DataField="useridDomain" HeaderText="useridDomain" SortExpression="useridDomain" />
<asp:BoundField DataField="sortOrder" HeaderText="sortOrder" SortExpression="sortOrder" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:SBAAdminConnectionString1 %>"
DeleteCommand="DELETE FROM [homePageList] WHERE [productName] = @old_productName AND [productURL] = @old_productURL"
InsertCommand="INSERT INTO [homePageList] ([productName], [productURL], [productSupportURL], [description], [modified], [userid], [useridDomain], [sortOrder]) VALUES (@productName, @productURL, @productSupportURL, @description, @modified, @userid, @useridDomain, @sortOrder)"
ProviderName="<%$ ConnectionStrings:SBAAdminConnectionString1.ProviderName %>"
SelectCommand="SELECT [productName], [productURL], [productSupportURL], [description], [modified], [userid], [useridDomain], [sortOrder] FROM [homePageList]"
UpdateCommand="UPDATE homePageList SET productSupportURL = @productSupportURL, description = @description, modified = @modified, userid = @userid, useridDomain = @useridDomain, sortOrder = @sortOrder, productName = @productName, productURL = @productURL WHERE (productName = @original_productName) AND (productURL = @original_productURL)" OldValuesParameterFormatString="original_{0}">
<DeleteParameters>
<asp:Parameter Name="old_productName" Type="String" />
<asp:Parameter Name="old_productURL" Type="String" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="description" Type="String" />
<asp:Parameter Name="modified" Type="DateTime" />
<asp:Parameter Name="userid" Type="String" />
<asp:Parameter Name="useridDomain" Type="String" />
<asp:Parameter Name="sortOrder" Type="Single" />
<asp:Parameter Name="productName" Type="String" />
<asp:Parameter Name="productURL" Type="String" />
<asp:Parameter Name="productSupportURL" Type="String" />
<asp:ControlParameter ControlID="GridView1" Direction="InputOutput" Name="original_productName"
PropertyName="SelectedValue" />
<asp:ControlParameter ControlID="GridView1" Direction="InputOutput" Name="original_productURL"
PropertyName="SelectedValue" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="productName" Type="String" />
<asp:Parameter Name="productURL" Type="String" />
<asp:Parameter Name="productSupportURL" Type="String" />
<asp:Parameter Name="description" Type="String" />
<asp:Parameter Name="modified" Type="DateTime" />
<asp:Parameter Name="userid" Type="String" />
<asp:Parameter Name="useridDomain" Type="String" />
<asp:Parameter Name="sortOrder" Type="Single" />
</InsertParameters>
</asp:SqlDataSource>I added a text box for every field in the grid to the form and update the fields when the user selects a record in the GridView. I then added an Update button to the form and tied the event to this procedure: Protected Sub bUpdate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bUpdate.Click
'if the user has not entered key fields!
If missingKeyFields() Then
Exit Sub
End If
Dim count, so As Integer
Dim uDomain, uid As String
'parse out the user id and domain.
Try
If HttpContext.Current.User.Identity.Name = "" Then
uid = "unknow"
uDomain = "unknown"
Else
uid = HttpContext.Current.User.Identity.Name
uid = uid.Substring(uid.IndexOf("") + 1)
uDomain = uid.Substring(0, uid.IndexOf("") - 1)
End If
Catch ex As Exception
uid = "unknow"
uDomain = "unknown"
End Try
'fill in the parameters
'@productName, @productURL, @productSupportURL, @description, @modified, @userid, @useridDomain, @sortOrder
Me.SqlDataSource1.UpdateParameters.Item("productName").DefaultValue = Me.tbProductName.Text
Me.SqlDataSource1.UpdateParameters.Item("productURL").DefaultValue = Me.tbProductURL.Text
Me.SqlDataSource1.UpdateParameters.Item("productSupportURL").DefaultValue = Me.tbProductSupportURL.Text
Me.SqlDataSource1.UpdateParameters.Item("description").DefaultValue = Me.tbProductDescription.Text
Me.SqlDataSource1.UpdateParameters.Item("modified").DefaultValue = Now
Me.SqlDataSource1.UpdateParameters.Item("userid").DefaultValue = uid
Me.SqlDataSource1.UpdateParameters.Item("useridDomain").DefaultValue = uDomain
Me.SqlDataSource1.UpdateParameters.Item("sortOrder").ConvertEmptyStringToNull = True
If Integer.TryParse(Me.tbSortOrder.Text, so) Then
Me.SqlDataSource1.UpdateParameters.Item("sortOrder").DefaultValue = so
Else
Me.SqlDataSource1.UpdateParameters.Item("sortOrder").DefaultValue = ""
End If
'insert the record.
count = Me.SqlDataSource1.Update()
Me.lCommandInfo.Text = count.ToString + " record was updated."
End Sub
The net result of the procedure is the message "0 record was updated." when I select a record in the gridView and then edit the "productName" field and click Update.
In an attempt to trace down the problem I added this code: Protected Sub SqlDataSource1_Updating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceCommandEventArgs) Handles SqlDataSource1.Updating
Message.Text = e.Command.CommandText
Message.Text += "<br>"
For lp As Integer = 0 To e.Command.Parameters.Count - 1
Message.Text += e.Command.Parameters(lp).ParameterName + "=" + e.Command.Parameters(lp).Value
Message.Text += "<br>"
Next
End Sub
The message label displays the following text:UPDATE homePageList SET productSupportURL = @productSupportURL, description = @description, modified = @modified, userid = @userid, useridDomain = @useridDomain, sortOrder = @sortOrder, productName = @productName, productURL = @productURL WHERE (productName = @original_productName) AND (productURL = @original_productURL)
@description=interesting!
@modified=3/15/2007 4:07:31 PM
@userid=unknow
@useridDomain=unknown
@sortOrder=
@productName=ok22
@productURL=http
@productSupportURL=http
@original_productName=ok
@original_productURL=ok
Notice how the "@original_productURL" has the same value as the "@original_productName"? This should not be the case. The @original_productURL should equal "http" since I didn't update the field's value. It seems like the second field of the primary key is not getting updated or passed to the @original_productURL parameter. Since .NET handles the @original_{0} parameters I don't know why the field isn't being properly updated.
Any thoughts on how to track down the root cause of my problem... Or better yet any thoughts on a work around to my problem?
Thanks,Johnny
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Jun 14, 2007
I need to know how to setup the ControlParameter for a template control in my Gridview? I have a datepicker in my template and I need to know how to refer to it in the ControlParameter of the SQLDataSource control.
<UpdateParameters>
<asp:ControlParameter Name="dp_start" ControlID="bdpPlanStart" PropertyName="SelectedValue" Type="Datetime" /> Here is the template:<asp:TemplateField HeaderText="Start" SortExpression="dp_start">
<ItemTemplate>
<%#DataBinder.Eval(Container, "DataItem.dp_start", "{0:d}")%>
</ItemTemplate>
<EditItemTemplate>
<BDP:BasicDatePicker id="bdpPlanStart" SelectedValue='<%# DataBinder.Eval(Container.DataItem,"dp_start") %>' runat="server" DateFormat="d">
</BDP:BasicDatePicker>
</EditItemTemplate>
</asp:TemplateField>
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Nov 7, 2007
I am trying to reload an AJAX control without reloading the page. This question may belong under AJAX, but I'm not sure if I'm managing the SqlDataSource correctly. I want to set the SelectCommand to a new SQL statement and refresh the form on the screen. My code is below. It doesn't seem to be working. Do I need to call something else or is this correct and the problem is with that nasty AJAX?SqlDataSource oSqlDataSource1 = (SqlDataSource) oContentPlaceHolder1.FindControl("SqlDataSource1");oSqlDataSource1.SelectCommand = "SELECT * FROM WorkHistory WHERE WorkHistoryID = " + sWorkHistoryID;oSqlDataSource1.Select(DataSourceSelectArguments.Empty);
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