grivid中切换按钮，两个按钮交替

给grivdView不要设值 button的url和 commandName 在rowDatabound中操作变换

protected void GVData_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            ImageButton ibtnApprove = (ImageButton)e.Row.FindControl("ibtnApprove");
            string submitState = GVData.DataKeys[e.Row.RowIndex]["Approved"].ToString().Trim();///DataKey实在gridView中头部设置的索引
            if (submitState == "同意")
            {
                ibtnApprove.ImageUrl = "../images/Button/btn_quxiao.gif";
                ibtnApprove.CommandName = "DropApproved";
            }
            else
            {
                ibtnApprove.ImageUrl = "~/images/Button/Submit.jpg";
                ibtnApprove.CommandName = "Approved";
            }

        }
    }