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ASP.Net Gridview Delete with a Stored Procedure

Posted on 2008-06-17
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Last Modified: 2012-08-13
Procedure 'sp_DeleteZTest' expects parameter '@id', which was not supplied.

I am getting the above error message for my GridView Delete Stored procedure below:


Create Procedure dbo.sp_DeleteZTest
@id int
as
delete ZTest where id = @id

It must be a problem on the GridView side.

Thanks.

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Question by:drlewicki
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Expert Comment

by:prairiedog
ID: 21806595
>>>It must be a problem on the GridView side.
Then what do your GridView look like?
How do you process the deletion in your GridView?
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Author Comment

by:drlewicki
ID: 21806891
I have it configured to use the stored procedure. Is this what you are asking?
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Expert Comment

by:prairiedog
ID: 21806927
Without source code, it will be like shooting in the dark. How can we possibly help you?
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Author Comment

by:drlewicki
ID: 21807357
       <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
            DeleteCommand="sp_DeleteZTest" SelectCommand="sp_SelectZTest" UpdateCommand="sp_UpdateZTest2" UpdateCommandType="StoredProcedure" DeleteCommandType="StoredProcedure" InsertCommand="sp_InsertZTest" InsertCommandType="StoredProcedure" SelectCommandType="StoredProcedure">
            <DeleteParameters>
                <asp:Parameter Name="id" />
            </DeleteParameters>
            <UpdateParameters>
                <asp:Parameter Name="id" Type="Int32" />
                <asp:Parameter Name="FirstName" Type="String" />
                <asp:Parameter Name="LastName" Type="String" />
            </UpdateParameters>
            <InsertParameters>
                <asp:Parameter Name="FirstName" Type="String" />
                <asp:Parameter Name="LastName" Type="String" />
            </InsertParameters>
        </asp:SqlDataSource>
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Author Comment

by:drlewicki
ID: 21807427
Here's the full source of the Page.
GridView.txt
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Expert Comment

by:prairiedog
ID: 21807564
I don't see any place where you assign value to @id, that is the cause of the problem.
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Author Comment

by:drlewicki
ID: 21807714
Shouldn't that be automatic? If I go to delete a row in the gridview, shouldn't @id be assigned to what it is in the gridview?
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Expert Comment

by:prairiedog
ID: 21807774
That would be ver nice...but unfortunatelly it does not work that way.
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Author Comment

by:drlewicki
ID: 21807799
That's the way the update works (and the update works), it picks up the id from the grid. See below.

CREATE PROCEDURE dbo.sp_UpdateZTest2
      (
      @id integer,
      @FirstName varchar(15),
      @LastName varchar(15)
      )
AS
      /* SET NOCOUNT ON */
      UPDATE    ZTest
      SET              
            FirstName = @FirstName,
            LastName = @LastName
      WHERE     (id = @id)
      RETURN

GO
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Expert Comment

by:prairiedog
ID: 21807865
>>>>>That's the way the update works (and the update works), it picks up the id from the grid.
That is interesting. Without any code-behind at all?
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Accepted Solution

by:
drlewicki earned 0 total points
ID: 21826470
yes. What way are you suggesting that I code this? And where - in the code-behind?
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Author Comment

by:drlewicki
ID: 22137879
use DataKeyNames = "ID" in the source for the gridview.
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