gridview获得隐藏列的值

if ((e.Row.RowType == DataControlRowType.DataRow) || (e.Row.RowType == DataControlRowType.Header) || (e.Row.RowType == DataControlRowType.Footer))
        {
            e.Row.Cells[1].Visible = false;       //要隐藏的列     
        } 

获得时 那删除来说
protected void gvSyncClass_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {        
        Server.Transfer("CourseMod.aspx?classid="+Server.UrlEncode(gvSyncClass.Rows[e.RowIndex].Cells[1].Text.ToString();));
    }