仅将工具提示添加到网格视图的某些单元格

我需要TemplateField在a中添加工具提示GridView,但只能Row满足某些条件.我怎样才能做到这一点？

   protected void GridView1_DataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            // check for condition 
            if (e.Row.Cells[0].Text.Contains("sometext"))
            {
                 e.Row.ToolTip = "Text to be shown on mouseover of the row";
            }
        }
    }