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Editorial Team
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Asked: 2026-05-27T11:12:58+00:00

I am having a problem with trying to create new rows in sql server

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I am having a problem with trying to create new rows in sql server with a typed data adapter where the primary key is set to GUID and the default value is NewSequentialID()

The column friendInviteID is a GUID and has a default value of NewSequentialID()

        Using myDT As New DAL.mbrFriendInvites.mbrFriendInvitesDataTable
            Using myTA As New DAL.mbrFriendInvitesTableAdapters.mbrFriendInvitesTableAdapter

                Dim row As DAL.mbrFriendInvites.mbrFriendInvitesRow = myDT.NewmbrFriendInvitesRow
                With row
                    .friendInviteID = Nothing
                    .mbrID = 11
                    .appID = 2
                    .contactEmail = "blah@blah.com"
                    .contactName = "blah blah"
                    .timesSent = 0
                End With

                myDT.AddmbrFriendInvitesRow(row)

                Dim result As Integer = myTA.Update(myDT)
                HttpContext.Current.Response.Write("rows updated: " & result)

            End Using
        End Using

When I insert a new row using the above method, SQL Server sets the value of friendInviteID to: 00000000-0000-0000-0000-000000000000

It doesn’t seem to want to use the NewSequentialID() default value.

I can manually create a GUID and insert it that way , but that will not create a SequentialID.

What am I missing?

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1 Answer

  1. Editorial Team

    Change your TableAdapter’s InsertCommand so that it creates the GUID or calls any scalar valued UDF that returns it:

    Click here for full-view

    enter image description here

    If you simply want to create a GUID in sql-server – you could also use newid():

    INSERT INTO Test (idTest, Value, Test)
VALUES    (newid(),@Value,@Test);

    You can also use a Stored-Procedure as CommandType of the InsertCommand that does that all and returns the actual values via output parameters.

    I’ve asked myself recently how to retrieve those primary keys: Retrieve identity value from inserted record's primary key

    If you need more informations on this issue i’ll have a look how i’ve implemented it. Anyhow you need InputOutput as Direction for your InsertCommand‘s parameters then.

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