Suppose DataGrid named DGCustomize, Insert The Following Code To The First Column.
<
ASP: TemplateColumn
Headertext
= "NO."
>
<
ItemStyle
Horizontalalign
= "Center"
>
ItemStyle
>
<
ItemTemplate
>
<
ASP: Label
Runat
= "Server"
TEXT
= '<% #
DGCustomize.currentPageIndex * DGCustomize.pageSize DGCustomize.Items.count 1%
>
"
ASP: Label
>
ItemTemplate
>
ASP: TemplateColumn
>