gridView RowEditing

I have the follwoing function which loops through 3 datagrids on my page and should disable all other edit buttons when one edit button is clicked.

VB Code:

Protected Sub DisableEdit()
        Dim c As Control
        Dim content As ContentPlaceHolder
        content = Page.Master.FindControl("contentplaceholder1")
 
        Dim grid As GridView
        Dim frow As GridViewRow
 
        For Each c In content.Controls
            If c.GetType() Is GetType(GridView) Then
                grid = CType(c, GridView)
                For Each frow In grid.Rows
                    If (frow.RowType = DataControlRowType.DataRow) Then
                        If Not frow.RowState = DataControlRowState.Edit Then
                            Dim btnEdit As LinkButton = frow.Cells(8).Controls(0)
                            btnEdit.Enabled = False
                        End If
                    End If
                Next
            End If
        Next
 
    End Sub

I call this on the RowEditing of each gridview, unfortunately RowEditing Occurs when a row's Edit button is clicked, but before the GridView control enters edit mode. Which means it turns them all to false but re-binds the gridview that called the fucntion, which in turn renders all fo the controls visible.

Does anyone know of a workaround for this, or the correct event to use that will fire after the control enters edit mode

I have decided to write a seperate function that will be called on page_prerendercomplete. This is the code:

VB Code:

Protected Sub DisableEdits()
        Dim c As Control
        Dim content As ContentPlaceHolder
        content = Page.Master.FindControl("ContentPlaceHolder1")
        Dim EditOn As Boolean = False
 
        Dim grid As GridView
        Dim frow As GridViewRow
 
        For Each c In content.Controls
            If c.GetType() Is GetType(GridView) Then
                grid = CType(c, GridView)
                For Each frow In grid.Rows
                    If (frow.RowType = DataControlRowType.DataRow) Then
                        If frow.RowState = DataControlRowState.Edit Then
                            EditOn = True
                        End If
                    End If
                Next
            End If
        Next
 
        If EditOn = True Then
            For Each c In content.Controls
                If c.GetType() Is GetType(GridView) Then
                    grid = CType(c, GridView)
                    For Each frow In grid.Rows
                        If (frow.RowType = DataControlRowType.DataRow) Then
                            If Not frow.RowState = DataControlRowState.Edit Then
                                Dim btnEdit As LinkButton = frow.Cells(9).Controls(0)
                                btnEdit.Enabled = False
                            End If
                        End If
                    Next
                End If
            Next
        Else
            For Each c In content.Controls
                If c.GetType() Is GetType(GridView) Then
                    grid = CType(c, GridView)
                    For Each frow In grid.Rows
                        If (frow.RowType = DataControlRowType.DataRow) Then
                            'If Not User.IsInRole(frow.DataItem("Number").ToString) Then
                            Dim btnEdit As LinkButton = frow.Cells(9).Controls(0)
                            btnEdit.Enabled = True
                            'End If
                        End If
            Next
                End If
            Next
        End If
 
    End Sub

this loops through all 3 of my gridviews, if any of the command buttons are set to edit, its turns a boolean to false, whch in turn disables all other edit buttons. If boolean remains true all edit buttons are set to active.

This works but I am getting a strange problem, if i click the first edit button the others disable, then when i click 'save' or 'cancel' the others are activated again which works perfectly.

However the second link button doesnt work, then the third one does then the fourth one doesnt etc.

any clues?