Question

I just got this message from Visual Studio 2005, when I clicked on the delete command I added to my gridview using the interface for configuring the grid:

Deleting is not supported by data
source ‘transactionsSqlDataSource’
unless DeleteCommand is specified.

How can I activate that? I want my user to be able to delete a row when they click on the button Delete.

I already changed the property DeleteCommandType of my SQLDataSource to StoredProcedure.
What else do I need to do?

UPDATE

This is what I did, but I am missing something, I can’t compile:

This is what I did at .cs:

public string DeleteCommand { get; set; }

How can I fix that, it says that the get is missing the body. I am not use to ASP.NET. Could you help me fixing this part of my code?

This is what I did at .aspx:

<asp:SqlDataSource ID="transactionsSqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:membershipsDBConnectionString %>"
        SelectCommand="SELECT [brukerId], [kjoptekvoten], [pengeneutbetalt], [fyringsolje], [biltype], [kjoptid] FROM [Informasjon]" DeleteCommandType="StoredProcedure"
        DeleteCommand="DELETE FROM [Informasjon] WHERE fyringsolje='Kull: 2,42 kg';">
    </asp:SqlDataSource>

Is the configuration for the datasource correct? Dont worry if you see that the delete command does not use parameters like the one above, it is just for a homework(I only need the query to pass).

UPDATE 2
I keep trying but i cant fix it. I am really newbie in ASP.NET and I am not very familiar with all the terminology. What exactly is happening here? How can I know the name of my store procedure?:

CS:

public string DeleteCommand { get { return DeleteCommand; } set { DeleteCommand = "";} 

Aspx:

<asp:SqlDataSource ID="SqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:membershipsDBConnectionString %>"
        DeleteCommandType="StoredProcedure" SelectCommand="SELECT [id], [kjoptekvoten], [pengeneutbetalt], [fyringsolje], [biltype], [kjoptid] FROM [Informasjon]"
        DeleteCommand="StoredProcedureName">
    </asp:SqlDataSource>

When I click on Delete that row needs to be erased from table Informasjon

Answer 1

You can either call a stored procedure if you have created one like below :

<asp:SqlDataSource ID="SqlDataSource5" runat="server" 
    ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
    // in the select command or your case delete you just input the name instead of a query
    SelectCommand="SELECT * FROM [Table] WHERE [Column1]=@Parameter1 AND [Column2]=@Parameter2 AND [Column3]=@Parameter3;" 
    DeleteCommand="StoredProcedureName"
    // Then ofcourse put the commandtype on storedprocedure but you already have that
    DeleteCommandType="StoredProcedure">
    // And you can declare the parameters like below
    <SelectParameters>
        <asp:Parameter Name="Parameter1" Type="String" />
        <asp:Parameter Name="Parameter2" Type="Boolean" />
        <asp:Parameter Name="Parameter3" Type="String" />
        <asp:Parameter Name="Parameter4" Type="Boolean" />
    </SelectParameters>
    <DeleteParameters>
         <asp:Parameter Name="Parameter1" Type="String" />
    </DeleteParameters>
</asp:SqlDataSource>

For more information about storedprocedures please read : What is a stored procedure?
Or you can directly call a query like in the example below :

<asp:SqlDataSource ID="SqlDataSource5" runat="server" 
    ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
    SelectCommand="SELECT * FROM [informasjon];"
    DeleteCommand="DELETE FROM [informasjon] WHERE [id]=@id;">
    <DeleteParameters>
         <asp:Parameter Name="id" Type="Int" />
    </DeleteParameters>
</asp:SqlDataSource>

The connection string is something you will have to provide for yourself. For more info on the connectionstring please read : https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.connectionstring%28v=vs.110%29.aspx