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DataSet insert problem

Hi,
I've a dataGrid set up (the standard msdn example) with a
SqlDataAdapter, and DataSet.

The problem is that after inserting a new row using the
LinkButton1_Cli ck() (code below)
then edit the values
I then try to update the values using "DataGrid1_Upda teCommand()"
The FindByApplID does't find the row.
It looks like the 'DataSet12.Appl .Rows.InsertAt( dr, 0)' doesn't insert.
But it show up in the grid.

The msdn example is
http://msdn.microsoft.com/library/en...asp?frame=true

But add new row is added.
''''''''''''''' '''''''''''''''
Private Sub LinkButton1_Cli ck(ByVal sender As System.Object,
ByVal e As
System.EventArg s) Handles LinkButton1.Cli ck

Dim dr As DataRow = DataSet12.Appl. NewRow()
dr.Item("Descri ption") = "Enter Description here"
DataSet12.Appl. Rows.InsertAt(d r, 0)

''' The inserts into a table using a indentity field as primary
key.

''' SqlDataAdapter1 insert command
'''' INSERT INTO Appl(Descriptio n, Wav)
''' VALUES (@Description, @Wav); SELECT ApplID,
''' Description, Wav FROM Appliance

Dim Index As Integer = dr.Item("ApplID ") ''' Does get a new
identity value back

'' I must not be committing/binding/something here

DataGrid1.EditI temIndex = 0
DataGrid1.DataB ind()
End Sub

''''''''''''''' ''''''''''''''' ''''''
Private Sub DataGrid1_Updat eCommand(ByVal source As Object,
ByVal e
As System.Web.UI.W ebControls.Data GridCommandEven tArgs)
Handles DataGrid1.Updat eCommand

Dim key As String = DataGrid1.DataK eys(e.Item.Item Index).ToString ()
Dim desc, watts As String
Dim tb As TextBox
tb = CType(e.Item.Ce lls(1).Controls (0), TextBox)
desc = tb.Text
If desc <"Enter Description here" And desc.Trim.Lengt h 0 Then
tb = CType(e.Item.Ce lls(2).Controls (0), TextBox)
If tb.Text.Trim.Le ngth <0 And IsNumeric(tb.Te xt.Trim) Then
watts = tb.Text
Dim r As DataSet1.Applia nceRow

r = DataSet12.Appli ance.FindByAppl ianceID(key) '
*********** not found

r.Description = desc
r.Watts = watts
SqlDataAdapter1 .Update(DataSet 12)
DataGrid1.EditI temIndex = -1
DataGrid1.DataB ind()
End If
End If

End Sub

Thanks in advance
-----------------------------------------------------------------------------------------------------

Aug 8 '06 #1
0 1114

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