ASP.NET - 在gridview中添加一个UpdatePanel触发器到LinkBut​​ton [英] ASP.NET - Adding an UpdatePanel trigger to a LinkButton inside a gridview

问题描述

$ b

 < asp： LinkBut​​ton ID =updateSomethingrunat =serverText =UpdateCausesValidation =falseOnClientClick =openDialog（）; onclick =UpdateButton_Click/> 
 
< asp：UpdatePanel ID =upNewUpdatePanelrunat =server> 
< ContentTemplate> 
< asp：Label ID =updateLabelrunat =server>< / asp：Label> 
< / ContentTemplate> 
<触发器> 
< asp：AsyncPostBackTrigger ControlID =updateSomethingEventName =Click/> 
< /触发器> 
< / asp：UpdatePanel> 
  

然而，当我尝试将LinkBut​​ton放置在gridview中时，像这样：

 < asp：GridView ID =grdListUsersrunat =serverAutoGenerateColumns =falseAllowPaging =falseOnRowDataBound =grdRowDefListUsersCssClass =mGridEmptyDataText =没有用户。> 
<列> 
< asp：BoundField DataField =NameHeaderText =NomeHeaderStyle-Width =300/> 
< asp：BoundField DataField =LoginHeaderText =LoginHeaderStyle-Width =300/> 
< asp：TemplateField HeaderText =OptionsHeaderStyle-Width =75ItemStyle-Horizo​​ntalAlign =CenterItemStyle-VerticalAlign =Middle> 
< ItemTemplate> 
< asp：LinkBut​​ton ID =updateSomethingrunat =serverText =UpdateCausesValidation =falseOnClientClick =openDialog（）; onclick =UpdateButton_Click/> 
< / asp：TemplateField> 
< /列> 
< / asp：GridView> 
  

这不起作用，我得到一个错误：一个ID为'updateSomething'的控件不能在UpdatePanel'upNewUpdatePanel'中找到触发器。

如何在gridview中使用ImageButton？

解决方案 c>尝试添加 asp：AsyncPostBackTrigger 到 asp：GridView 的s OnRowCommand 事件并处理该事件中的链接按钮点击

 < asp：GridView ID =grdListUsersrunat =serveronRowCommand =grdListUsers_RowCommand> 
< asp：TemplateField> 
< asp：LinkBut​​ton ID =updateSomethingCommandName =update-somethingCommandArgument ='<％＃DataBinder.Eval（Container，RowIndex）％>'/> 
< / asp：TemplateField> 
< / asp：GridView> 
  

并在cs中创建这样的事件

  protected void grdListUsers_RowCommand（object sender，GridViewCommandEventArgs e）
 {
 if（e.CommandName ==update-something）
 {
 grdListUsers.SelectedIndex = Convert.ToInt32（e.CommandArgument）; 
} 
} 
  

I was trying to update the content of a modal dialog, and this code works for me:

<asp:LinkButton ID="updateSomething" runat="server" Text="Update" CausesValidation="false" OnClientClick="openDialog();" onclick="UpdateButton_Click" />

<asp:UpdatePanel ID="upNewUpdatePanel" runat="server">
    <ContentTemplate>
        <asp:Label ID="updateLabel" runat="server"></asp:Label>
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="updateSomething" EventName="Click" />
    </Triggers>
</asp:UpdatePanel>

However, when I try to place the LinkButton inside a gridview, like so:

<asp:GridView ID="grdListUsers" runat="server" AutoGenerateColumns="false" AllowPaging="false" OnRowDataBound="grdRowDefListUsers" CssClass="mGrid" EmptyDataText="No users.">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Nome" HeaderStyle-Width="300" />
        <asp:BoundField DataField="Login" HeaderText="Login" HeaderStyle-Width="300" />
        <asp:TemplateField HeaderText="Options" HeaderStyle-Width="75" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle">
            <ItemTemplate>
                <asp:LinkButton ID="updateSomething" runat="server" Text="Update" CausesValidation="false" OnClientClick="openDialog();" onclick="UpdateButton_Click" />
        </asp:TemplateField>
    </Columns>
</asp:GridView>

This does not work, I get an error saying: A control with ID 'updateSomething' could not be found for the trigger in UpdatePanel 'upNewUpdatePanel'.

How can I use the ImageButton inside the gridview?

解决方案

Try and add the asp:AsyncPostBackTrigger to the asp:GridView's OnRowCommand event and handle the link button click in that event

<asp:GridView ID="grdListUsers" runat="server" onRowCommand="grdListUsers_RowCommand">
     <asp:TemplateField>
           <asp:LinkButton ID="updateSomething" CommandName="update-something" CommandArgument='<%# DataBinder.Eval(Container, "RowIndex") %>'/>
     </asp:TemplateField>
</asp:GridView>

and in the cs create the event like this

protected void grdListUsers_RowCommand(object sender, GridViewCommandEventArgs e)
{
   if (e.CommandName == "update-something")
   {
      grdListUsers.SelectedIndex = Convert.ToInt32(e.CommandArgument);
   }
}

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