I have a fairly straight forward datagrid but I removed one field called 'UserID' because I grab that from User.Identity.Name. It's probably very basic, but how do I set the value to the correct field? I would think I assign it during the ItemInserting event...but what exactly do I assign it to? dataView1.DataKey ?? somethin?

    Protected Sub dvRSVP_ItemInserting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewInsertEventArgs) Handles dvRSVP.ItemInserting
        Dim userName As String = User.Identity.Name.ToString
        e.Values("userID") = userName
    End Sub

Any ideas? I'm able to assign the userName to a label and it looks okay. Here's the datasource insert command:

Hi,mahalie:

I think you can add the unique key of the records to the DataKeys properties.

Here is some tutorials:

http://msdn2.microsoft.com/en-us/library/system.web.ui.webcontrols.basedatalist.datakeys.aspx

Ah, I finally answered my own question.  The mismatch error was due to my deleting the primary key from the SQL insert statement and not removing it from the insert parameters. Using e.Values("fieldName") = in the iteminserting event of the details view works perfectly!!