AJH.CMS.WEB.UI.Admin.ManageGroup_UC.ibtnDelete_Click C# (CSharp) Method

        void ibtnDelete_Click(object sender, ImageClickEventArgs e)
        {
            for (int i = 0; i < gvGroup.Rows.Count; i++)
            {
                CheckBox chkItem = (CheckBox)gvGroup.Rows[i].FindControl("chkItem");
                if (chkItem != null && chkItem.Checked)
                {
                    HtmlInputHidden hdnID = (HtmlInputHidden)gvGroup.Rows[i].FindControl("hdnID");
                    if (hdnID != null && !string.IsNullOrEmpty(hdnID.Value))
                    {
                        int GroupID = Convert.ToInt32(hdnID.Value);
                        GroupManager.DeleteLogical(GroupID);
                    }
                }
            }
            FillGroups(-1);
            ExitMode();
            upnlGroupItem.Update();
        }
        #endregion