Zitat:

Und noch was, wenn der Code in Zusammenhang mit deinem anderen Thread steht warum verwendest du nicht deine TableAdapter.Update() Methode?

 Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) _
   Handles Button1.Click
        Dim row As Data.DataRow
 
        row = DsUsers.Tables(0).NewRow()
        row("Benutzername") = tbxUsername.Text
        DsUsers.Tables(0).Rows.Add(row)
 
    End Sub
 
    Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) _
      Handles Button2.Click
 
        Try
            objConnection.Open()
            Me.Validate()
            Me.TblUsersBindingSource.EndEdit()
            Me.Tbl_UsersTableAdapter.Update(Me.DsUsers.tbl_Users)
            MsgBox("Update successful")
        Catch ex As Exception
            MsgBox("Update failed")
        Finally
            objConnection.Close()
        End Try
 
    End Sub