Can't get Formview to update, what am I doing wrong?

Question

I'm messing around with a Formview in asp.net. I know that the UpdateCommand needs to be specified so that the Formview knows what SQL query to run.

Do I need to write an event in addition to the code the Formview sets up in order to properly fire off the SQL query?

In addition, I don't get a SQL error or anything, it just does not bind back to the database.

<EditItemTemplate>
        ProductID:
        <asp:Label ID="ProductIDLabel1" runat="server" 
            Text='<%# Eval("ProductID") %>' />
        <br />
        ProductName:
        <asp:TextBox ID="ProductNameTextBox" runat="server" 
            Text='<%# Bind("ProductName") %>' />
        <br />
        UnitPrice:
        <asp:TextBox ID="UnitPriceTextBox" runat="server" 
            Text='<%# Bind("UnitPrice") %>' />
        <br />
        <asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True" 
            CommandName="Update" Text="Update" />
        &nbsp;<asp:LinkButton ID="UpdateCancelButton" runat="server" 
            CausesValidation="False" CommandName="Cancel" Text="Cancel" />
    </EditItemTemplate>

Answer 1

Make sure you set the DataKeys property (usually to the column(s) that are your primary key). If you want more help, you'll need to post your code.