You're accessing so many items without null checks that it could be any number of things. Are you sure all of the controls exist in the cells you're specifying?
event is raised when a row's Edit button is clicked, but before the Grid View control enters edit mode.
whichever you are looking for (pre/post changed value).
If so, at the table level, after the data is queried and populated for the grid population, you could then...
A Grid View Update Event Args object is passed to the event-handling method, which enables you to determine the index of the current row and to indicate that the update operation should be canceled.
Add(New Data Column("Col1_PH", Get Type(String))) dt. event is raised when a row's Update button is clicked, but before the Grid View control updates the row.This enables you to provide an event-handling method that performs a custom routine, such as canceling the update operation, whenever this event occurs. Edit Index = -1 'Bind data to the Grid View control. Sql Command Dim sql As String Dim reader As System.
Sql Command Dim sql3 As String Dim reader3 As System. In my VB Gridview, I had bind several column from datatable into one single column of the gridview. The following is the VB code: Protected Sub Grid View1_Row Editing(By Val sender As Object, By Val e As Grid View Edit Event Args) 'Set the edit index. Bind Data() End Sub Protected Sub Grid View1_Row Canceling Edit(By Val sender As Object, By Val e As Grid View Cancel Edit Event Args) 'Reset the edit index. Edit Index = -1 'Bind data to the Grid View control.