RegisterForEventValidation can only be called during render

[wind]

i use the code in exporting gridview to excel and and work just fine but when i adjust it to my implementation of a search record I'm getting the said error (registerforeventvalidation can only be called during render)how will i resolved these problem without setting the EnableEventValidation to false.

[kenobewan]

You can turn paging and/or sorting off, rebind the grid, export to Excel, then turn paging and/or sorting back on. If you have a multi-page gridview, this will render it to one page for export to Excel and then render it back to where it was. The down side is that it could be a bit slow for large text files.

GridView.AllowPaging = False
GridView.AllowSorting = False
GridView.DataBind()

' Your export routing goes here

GridView.AllowPaging = True
GridView.AllowSorting = True
GridView.DataBind()

[jon1234]

Using this technique, it seems that no data is being saved to the spreadsheet, however, the render error no longer appears. Any ideas?

[inderjeetsinghsethi]

Just Write down at page directive
is
EnableEventValidation = "false"