How to change a value in GridView

protected void grvTest_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.Cells[8].Text == "True")
{
e.Row.Cells[8].Text = "Active";
}
else
{
e.Row.Cells[8].Text = "Inactive";
}
}
}