You can do this by enable/disable particular cell.
protected void GridView1_RowDataBound1(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label a = e.Row.FindControl("Label3") as Label;
if (a.Text == "Sam")
{
e.Row.Cells[0].Enabled = true;
e.Row.Cells[1].Enabled = false;
e.Row.Cells[2].Enabled = false;
e.Row.Cells[3].Enabled = false;
}
}
}