ASP.Net GridView with sorting column DataKey not working

Please share the code and html.

Let us know which column has the issue.

if clicked one of column in gridvew datakeyname not change automatically like this, value hiddenfield1 no sometimes change true, sometimes change false not consisten do you have idea 

Dim rowindex As Integer, row As GridViewRow
If e.CommandName = "view" Then
    rowindex = Convert.ToInt32(e.CommandArgument)
    row = GridView1.Rows(rowindex)
    HiddenField1.Value = Convert.ToInt32(GridView1.DataKeys(rowindex).Values(0))
    MsgBox(HiddenField1.Value)

Share your code and html. So that we can verify.