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can't fetch updated value in edit mode

Posted on 2009-04-06
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Last Modified: 2013-11-07
i have a datagrid on a web page which is bound to an OLEDB datasource.  It queries data fine but when i try to retrive the value of a cell when Edit mode, it simply returns the previous data.  I have tried to fetch the data in the RowUpdating event, but it is the old data.  The RowUpdated event doesn't even fire.  How do i retrieve the updated values?  I'm trying to "intercept" the update and apply an update statement of my own.
Protected Sub GV1_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles GV1.RowUpdating
        Dim txtActive As TextBox = DirectCast(GV1.Rows(e.RowIndex).Cells(2).Controls(0), TextBox)
        Dim strActive As String = txtActive.Text  'This always returns the old value
 
        Dim txtID As TextBox = DirectCast(GV1.Rows(e.RowIndex).Cells(1).Controls(0), TextBox)
        Dim strID As String = txtID.Text   'This always returns the old value
 
        Dim txtPerson As TextBox = DirectCast(GV1.Rows(e.RowIndex).Cells(3).Controls(0), TextBox)
        Dim strPerson As String = txtPerson.Text    'This always returns the old value
 
        Dim txtZip As TextBox = DirectCast(GV1.Rows(e.RowIndex).Cells(4).Controls(0), TextBox)
        Dim strZip As String = txtZip.Text
        Dim strCmd As String
 
        strCmd = "Update PurchaseList SET Available = " & strActive & ",  UserName =  '" & strPerson & "', PurchaseZip = " & strZip & " WHERE ID = " & strID
 
        Dim strConnection As String = System.Configuration.ConfigurationManager.AppSettings("ConnectionStr")  'Get Connection string from Web.Config file
        Dim myCon As New OleDbConnection(strConnection)
        myCon.Open()
 
        Dim myCmd As New OleDbCommand(strCmd, myCon)
        myCmd.ExecuteNonQuery()
        Me.GV1.EditIndex = -1
        myCon.Close()
        Me.ProcessGridView()
 
    End Sub

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Question by:lanier3532
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Expert Comment

by:informaniac
ID: 24077247
Try the rowCommand event, any event of grid will first fire the rowcommand event
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Author Comment

by:lanier3532
ID: 24080008
That doesn't seem to give me access to the new grid values entered during edit mode, only the command arguments.  I must be missing something.  I've attached a screen shot of the edit session.

As you can see from the screen shot, i've changed the value of Active from 1 to a 0.  After pressing the Update link, when i try to access the cell data using the code previously in this thread, it returns a value of 1 instead of 0.

Grid-Pic.gif
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Accepted Solution

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CodeCruiser earned 250 total points
ID: 24125753
How do you bind the grid? Are you sure you do not rebind it on postback? I mean are you using the
If Not page.IsPostBack Then
   Grid.datasource = ..
   Grid.DataBind()
End If
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Author Closing Comment

by:lanier3532
ID: 31567017
that was it!  Sometimes its the obvious that we don't see.
Thanks again!
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