Working with Gridview in ASP.NET

Suppose the gridview contains four columns with the last two column as template with Hyperlink
When I click that Hyperlink I need that value in some where say TextBox


                              

and in the code behind GridView1_RowCommand event

If e.CommandName = "claim" Then
            Dim index As Integer = Convert.ToInt32(e.CommandArgument)

            Dim row = GridView1.Rows(index)

            Dim lin As LinkButton = CType(row.FindControl("ClaimLink"), LinkButton)
            Dim lin2 As LinkButton = CType(row.FindControl("TransLink"), LinkButton)

            ClaimID.Text = lin.Text
            TRansID.Text = lin2.Text
End If