c#-UpdatePanel中的UpdateMethod之后刷新GridView

我已经在UpdatePanel中设置了GridView. GridView具有与Gridview1_SelectedIndexChanged方法绑定的SELECT CommandField.我希望在选择行后刷新GridView,但是从不刷新.我尝试了几种不同的方案,但似乎都没有用.

>我在UpdatePanel上将UpdateMode设置为“ Conditional”和“ Always”,并尝试在后面的代码中强制对UpdatePanel进行更新.
>我已经通过按钮将CommandField转换为templatefield

这是经过清理的代码：

  <asp:UpdatePanel ID="UpdatePanel1" runat="server">
   <ContentTemplate>
    <asp:GridView ID="GridView1"
         runat="server"
         AllowPaging="True" 
         AllowSorting="True"
         AutoGenerateColumns="False"
         DataSourceID="ObjectDataSource1"
         OnSelectedIndexChanged="GridView1_SelectedIndexChanged" 
         PagerSettings-Visible="true" EnableViewState="False" >
    <Columns>
        <asp:CommandField ButtonType="Image"
             SelectImageUrl="~/images/icon.gif" 
             ShowSelectButton="True" />
        <asp:BoundField DataField="Id" HeaderText="Id" SortExpression="Id" />
        <asp:BoundField DataField="Title" HeaderText="Title" 
             SortExpression="Title" />
    </Columns>
    </asp:GridView>
   </ContentTemplate>
   <Triggers>
        <asp:AsyncPostBackTrigger ControlID="GridView1" 
            EventName="SelectedIndexChanged" />
   </Triggers>
  </asp:UpdatePanel>

数据源看起来像这样…

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
     DataObjectTypeName="myNamespace.Item"
     InsertMethod="myInsertMethod" 
     SelectMethod="mySelectMethod" 
     TypeName="myNamespace.ItemMgr"
     UpdateMethod="myUpdateMethod">
</asp:ObjectDataSource>

解决方法:

我想我看到你的问题了.尝试将DataKeyNames参数添加到GridView中,并添加要操作的行的ID.接下来,删除“触发器”部分,因为您不需要做什么操作.由于您要执行某些操作,因此将CommandField更改为其他选项之一,例如“删除”(您当前未使用).接下来,修改ObjectDataSource以在myNamespace.ItemMgr中定义一个DeleteMethod,该方法从GridView接受ID(DataKeyNames参数)并执行您想要执行的任务.方法返回后,它将从定义的SelectMethod刷新GridView.

  <asp:UpdatePanel ID="UpdatePanel1" runat="server">
   <ContentTemplate>
    <asp:GridView ID="GridView1"
         runat="server"
         AllowPaging="True" 
         AllowSorting="True"
         AutoGenerateColumns="False"
         DataSourceID="ObjectDataSource1"
         PagerSettings-Visible="true" EnableViewState="False"
         DataKeyNames="Id" >
    <Columns>
        <asp:CommandField DeleteImageUrl="/images/icon.gif" 
             DeleteText="Some Text"
             ShowDeleteButton="True" 
             ButtonType="Image" />
        <asp:BoundField DataField="Id" HeaderText="Id" SortExpression="Id" />
        <asp:BoundField DataField="Title" HeaderText="Title" 
             SortExpression="Title" />
    </Columns>
    </asp:GridView>
   </ContentTemplate>
  </asp:UpdatePanel>

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
    DeleteMethod="myDeleteMethod" SelectMethod="mySelectMethod" 
    TypeName="myNamespace.ItemMgr">
</asp:ObjectDataSource>

标签：gridview,asp-net-ajax,c
来源： https://codeday.me/bug/20191108/2004428.html