[Solved] ASP.Net Error: Can not convert type TableCell to Label

Can not convert type system.we.ui.webcontrol.tablecell to system.web.ui.webcontrols.label

Label date = GVitem.SelectedRow.Cells[16].Text as Label;
//      Label date = GVCon.SelectedRow.FindControl("Inv_date") as Label;
 
if ((date.Text) != "")
{
    txtopndate.Text = DateTime.ParseExact((GVitem.SelectedRow.FindControl("Inv_date") as Label).Text, "MM/dd/yyyy", CultureInfo.InvariantCulture).ToString("yyyy-MM-dd").Replace(" ", "");
 
}
else
{
    txtopndate.Text = GVitem.SelectedRow.Cells[16].Text.Replace(" ", "");
}

on below line i am getting

Label date = GVitem.SelectedRow.Cells[16].Text as Label;