How to handle Post back if using Ajax

[nUflAvOrS]

Hi all,

Before I used updatepanel the code below is worked.

Protected Sub grdStatusMaster_RowEditing(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles grdStatusMaster.RowEditing
 
        With grdStatusMaster
 
            .EditIndex = e.NewEditIndex
            .ShowFooter = False
            .Width = 560
            .Columns.Item(4).ItemStyle.Width = 125
 
            If Me.IsPostBack Then
 
                Me.grdStatusMaster.DataSource = (CType(Session("myDatatable"), DataTable)).DefaultView
                Me.grdStatusMaster.DataBind()
                Dim descTB As TextBox
                Dim rowCheckbox As CheckBox
                Dim strScript As String
                descTB = .Rows(.EditIndex).Cells(2).FindControl("txtdesc")
                rowCheckbox = .Rows(.EditIndex).Cells(0).FindControl("ChkSelect")
 
                strScript = "<script language=""JavaScript"">" & vbCrLf & _
                             vbTab & "document.getElementById('" & descTB.ClientID & "')" & ".focus();" & _
                              vbCrLf & vbTab & "document.getElementById('" & descTB.ClientID & "')" & ".select();" & _
                              vbCrLf & vbTab & "document.getElementById('" & rowCheckbox.ClientID & "')" & ".checked = true;" & _
                             vbCrLf & "<" & "/script>"
                Page.ClientScript.RegisterStartupScript(GetType(String), "HighLightText", strScript)
 
            End If
        End With
 
    End Sub

But after I used updatepanel the code above doesn't worked.

Can any one tell me why it happened and how to solve my issue ?

Thanks a lot.