#region //'Revision: 1.00 Created Date: 2013/08/02 Created ID: Una [#1300071]增加多選框         /// <summary>         /// Session獲取多選框值         /// </summary>         private void RememberOldValues()         {             ArrayList categoryIDList = new ArrayList();             string index = "";             foreach (GridViewRow row in gridView.Rows)             {                 index = (string)gridView.DataKeys[row.RowIndex].Value;                 bool result = ((CheckBox)row.FindControl("DeleteThis")).Checked;                 // Check in the Session                 if (Session["id"] != null)                     categoryIDList = (ArrayList)Session["id"];                 if (result)                 {                     if (!categoryIDList.Contains(index))                         categoryIDList.Add(index);                 }                 else                     categoryIDList.Remove(index);             }             if (categoryIDList != null && categoryIDList.Count > 0)                 Session["id"] = categoryIDList;         }         /// <summary>         /// Session分頁時之前多選框為true         /// </summary>         private void RePopulateValues()         {             ArrayList categoryIDList = (ArrayList)Session["id"];             if (categoryIDList != null && categoryIDList.Count > 0)             {                 foreach (GridViewRow row in gridView.Rows)                 {                     string index = (string)gridView.DataKeys[row.RowIndex].Value;                     if (categoryIDList.Contains(index))                     {                         CheckBox myCheckBox = (CheckBox)row.FindControl("DeleteThis");                         myCheckBox.Checked = true;                     }                 }             }         }         #endregion

protected void gridView_PageIndexChanging(object sender, GridViewPageEventArgs e)         {             RememberOldValues();             gridView.PageIndex = e.NewPageIndex;             BindData();             RePopulateValues();         }

protected void btnSelect_Click(object sender, EventArgs e)         {             string items = "";             ArrayList categoryIDList = new ArrayList();             string index ="";             foreach (GridViewRow row in gridView.Rows)             {                 index = (string)gridView.DataKeys[row.RowIndex].Value;                 bool result = ((CheckBox)row.FindControl("DeleteThis")).Checked;                 // Check in the Session                 if (Session["id"] != null)                     categoryIDList = (ArrayList)Session["id"];                 if (result)                 {                     if (!categoryIDList.Contains(index))                         categoryIDList.Add(index);                 }                 else                     categoryIDList.Remove(index);             }             if (categoryIDList != null && categoryIDList.Count > 0)                 for (int i = 0; i < categoryIDList.Count; i++)                 {                     items += categoryIDList[i] + ",";                 }             items = items.Substring(0, items.Length - 1);             ScriptManager.RegisterStartupScript(this, this.GetType(), "", "check('" + items + "');", true);             Session.Remove("id");         }