Gridview RowUpdate在updatepanel裏表現奇怪

Question

我想更新gridview行。但不知何故，RowUpdating事件中我的gridview rowcount被設置爲0。不知道發生了什麼問題。請讓我知道做錯了什麼。

這裏是我的代碼：

<asp:UpdatePanel ID="updTrackerItem" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false"> 
    <ContentTemplate> 
     <table cellspacing="5" id="Table4"> 
      <tr> 
       <td> 
        <asp:Label ID="lblTrackingDate" Text="Enter Request for Task Order Proposals Accepted by Office of Acquisitions Date:" 
         runat="server" AssociatedControlID="txtDate"></asp:Label> 
        <asp:TextBox ID="txtDate" runat="server" MaxLength="11" AutoPostBack="true" OnTextChanged="txtDate_TextChanged" 
         ValidationGroup="valTracker"></asp:TextBox> 
        <ajaxToolkit:CalendarExtender ID="CalendarExtender1" runat="server" PopupButtonID="ibtnCalendar2" 
         TargetControlID="txtDate"></ajaxToolkit:CalendarExtender> 
        <asp:ImageButton ID="ibtnCalendar2" ImageUrl="../App_Themes/img/icon-calendar.gif" 
         Width="20px" runat="server" AlternateText="Select Date" /> 
        <asp:RequiredFieldValidator ID="RequiredFieldValidator6" ControlToValidate="txtDate" 
         runat="server" ValidationGroup="valTracker" EnableClientScript="true" ErrorMessage="Please enter Tracking OA Date"></asp:RequiredFieldValidator> 
        <asp:CompareValidator ID="CompareValidator1" runat="server" Type="Date" Operator="DataTypeCheck" 
         ControlToValidate="txtDate" ErrorMessage="Please enter a valid date." ValidationGroup="valTracker" 
         EnableClientScript="true"></asp:CompareValidator> 
       </td> 
      </tr> 
      <tr> 
       <td> 
        <asp:GridView ID="gvTrackerItem" runat="server" AutoGenerateColumns="False" CellPadding="5" 
              DataKeyNames="TrackerItemID,WorkOrderID,TrackerItemIncrement,WorkOrder_TrackerItemDate" 
              OnRowEditing="gvTrackerItem_RowEditing1" OnRowUpdating="gvTrackerItem_RowUpdating" 
              OnRowCreated="gvTrackerItem_RowCreated" OnRowDataBound="gvTrackerItem_RowDataBound" 
              OnSelectedIndexChanged="gvTrackerItem_SelectedIndexChanged" OnRowCancelingEdit="gvTrackerItem_RowCancelingEdit" 
              ShowHeader="False" CssClass="dataTable" ShowFooter="true" FooterStyle-ForeColor="black" 
              EnableViewState="false"> 
         <Columns> 
          <asp:BoundField DataField="TrackerItemDescription" HeaderText="" ShowHeader="False" ReadOnly ="true" 
                FooterText="Total calendar days Calculated:"> 
                <ItemStyle HorizontalAlign="Left" /></asp:BoundField> 
          <asp:TemplateField ItemStyle-HorizontalAlign="Right" FooterStyle-HorizontalAlign="Right"> 
         <EditItemTemplate> 
         <asp:TextBox ID="txtEditDate" runat="server" Text='<%# Bind("WorkOrder_TrackerItemDate", "{0:MM-dd-yyyy}") %>' 
                  MaxLength="11"></asp:TextBox> 
         <ajaxToolkit:CalendarExtender ID="AjaxCal1" runat="server" TargetControlID="txtEditDate" 
                  PopupButtonID="Image1"> 
         </ajaxToolkit:CalendarExtender> 
         <asp:ImageButton ID="Image1" ImageUrl="../App_Themes/img/icon-calendar.gif" Width="20px" 
                  runat="server" AlternateText="Select Date" /> 
         <asp:CompareValidator ID="CompareValidator1" runat="server" Type="Date" Operator="DataTypeCheck" 
                  ControlToValidate="txtEditDate" ErrorMessage="Please enter a valid date."></asp:CompareValidator> 
         </EditItemTemplate> 
         <ItemTemplate> 
          <asp:Label ID="lblDate" runat="server" Text='<%# Bind("WorkOrder_TrackerItemDate") %>'></asp:Label> 
         </ItemTemplate> 
         <FooterTemplate> 
          <asp:Label ID="lblTotal" runat="server" /> 
         </FooterTemplate> 
         </asp:TemplateField> 
         <asp:CommandField ShowEditButton="True" CausesValidation="false" /> 
         </Columns> 
         <RowStyle CssClass="ItemStyle" /> 
         <HeaderStyle /> 
         <AlternatingRowStyle CssClass="AlternatingStyle" /> 
         <EmptyDataTemplate> 
          No Schedule Dates Found. 
         </EmptyDataTemplate> 
         </asp:GridView> 
        </td> 
       </tr> 
      </table> 
     </ContentTemplate> 
     <Triggers> 
      <asp:AsyncPostBackTrigger ControlID="gvTrackerItem" EventName="RowUpdating" /> 
      <asp:AsyncPostBackTrigger ControlID="gvTrackerItem" EventName="RowEditing" /> 
      <asp:AsyncPostBackTrigger ControlID="gvTrackerItem" EventName="RowCancelingEdit" /> 
      <asp:AsyncPostBackTrigger ControlID="gvTrackerItem" EventName="RowDataBound" /> 
      <asp:AsyncPostBackTrigger ControlID="gvTrackerItem" EventName="RowCreated" /> 
      <asp:AsyncPostBackTrigger ControlID="txtDate" EventName="TextChanged" /> 
     </Triggers> 
    </asp:UpdatePanel> 

    protected void gvTrackerItem_RowUpdating(object sender, GridViewUpdateEventArgs e) 
     {    
      //Update the values. 
      GridViewRow row = gvTrackerItem.Rows[e.RowIndex]; 

      TextBox txtDt = (TextBox)gvTrackerItem.Rows[row.RowIndex].FindControl("txtEditDate"); 
      WorkOrderTrackerItem wti = new WorkOrderTrackerItem(); 
      wti.WorkOrderID = TaskOrderID; 
      wti.TrackerItemID = Convert.ToInt32(gvTrackerItem.DataKeys[row.RowIndex].Values["TrackerItemID"].ToString()); 
      wti.WorkOrder_TrackerItemDate = Convert.ToDateTime(txtDt.Text); 
      WorkOrderManager.SaveRequestTrackerItem(wti); 

      //Reset the edit index. 
      gvTrackerItem.EditIndex = -1; 

      //Bind data to the GridView control. 
      LoadTrackerItems(TaskOrderID); 
     } 

Answer 1

海，

而不是GridViewRow row = gvTrackerItem.Rows[e.RowIndex];

使用本

GridViewRow row = (GridViewRow)gvTrackerItem.Rows[e.RowIndex] 

，看看你是否獲得行索引...只是給試一試

OR

檢查烏爾數據綁定方法

OR

CausesValidation="false"的更新按鈕可能會爲你做..