Question

我有一个列表视图，它显示了数据库中的数据列表，并在每一行中提供了一个按钮，其中使用命令参数在后端检索id，并且相应ID的数据显示在网格视图。代码如下：

 <asp:ListView ID="lstvwResultInquiry" runat="server" DataKeyNames="inquiry_id" 
         onitemdatabound="ListView1_ItemDataBound" 
         onpagepropertieschanging="PagePropertiesChanging" 
         onitemcanceling="CancelListViewItem" onitemediting="EditListViewItem" 
         onselectedindexchanging="lstvwResultInquiry_SelectedIndexChanging" >
             <LayoutTemplate >
             <div id="rightnowIn">
                                <table  class="gridview"  cellpadding="5" cellspacing="5" >

                                    <tr class="header">                                                               
                                         <th width="140">Company</th>
                                        <th width="220">Event</th>
                                        <th width="125">Country</th>
                                        <th width="125">Date</th>
                                        <th width="100">Details</th>                                                                                                                   
                                    </tr>
                                    <tr id="itemPlaceholder" runat="server" />
                          <tr id="Tr1"  runat="server" align="center" >
                          <td colspan="2" align="left"><asp:Label ID="lblCount" runat="server"></asp:Label></td>
                    <td id="Td1"  runat="server" style="" colspan="4">
                      <asp:DataPager class="mpart" ID="DataPager1" PageSize="10" runat="server" align="center">
                            <Fields>                              
                                <asp:NumericPagerField ButtonType="Link"  ButtonCount="3" PreviousPageText="<<<" NextPageText=">>>" />     
                            </Fields>
                        </asp:DataPager>    
                    </td>
                    <td colspan="2" align="left"></td>
                </tr>
                                </table>
                                </div>
                            </LayoutTemplate>
                            <ItemTemplate >
                                <tr class="itemTemplateTr" >

                                    <td style="color: #403f3f; font-weight: bold;"><%# Eval("company")%></td>
                                        <td><asp:Label  ID="lblEvents" runat="server" ></asp:Label></td>
                                         <td><%# Eval("country_name")%></td>
                                         <td><%# Eval("date", "{0:dd-MM-yyyy}")%></td>
                                           <%   if (Session["session_log_id"] != null)
                                { %>
                                       <%--<td class="command"><asp:HyperLink ID="btnEdit" runat="server" Text="View" OnClientClick="javascript: show_popup()"  CommandArgument='<%#Eval("inquiry_id")%>' CommandName="view"   cssclass="linkEditButton"  Font-Underline="True"  /></td>--%>
                                   <td> <asp:Button ID="Button2" runat="server" Text="view" OnClientClick="javascript: show_popup()" CommandName="view" CommandArgument='<%# Eval("inquiry_id")%>' OnClick="buttonClick"/>  </td>            

                                 <%} %>

                                  <td>
                                            <asp:Button ID="buttReminder"  runat="server" Text="view"  Visible="false" CssClass="reminderButton"  CommandArgument='<%# Eval("inquiry_id")%>' OnClick="buttReminderInquiry_Click"   BorderStyle="None" /></td>


                                </tr> 
                            </ItemTemplate>           
                      <AlternatingItemTemplate>
                     <tr class="alternatingItem">                      

                                      <td style="color: #403f3f; font-weight: bold;"><%# Eval("company")%></td>
                                     <td><asp:Label  ID="lblEvents" runat="server"  ></asp:Label></td>
                                         <td><%# Eval("country_name")%></td>
                                         <td><%# Eval("date", "{0:dd-MM-yyyy}")%></td>
                                          <%   if (Session["session_log_id"] != null)
                                { %>
                                       <%--<td class="command"><asp:HyperLink ID="btnEdit" runat="server" Text="View" OnClientClick="javascript: show_popup()"  CommandArgument='<%# Eval("inquiry_id")%>' cssclass="linkEditButton"  Font-Underline="True"  /></td>      --%>
                        <td> <asp:Button ID="Button2" runat="server" Text="view" CommandName="view" CommandArgument='<%# Eval("inquiry_id")%>' OnClick="buttonClick" OnClientClick="javascript: show_popup()" /></td>

                                <%}   %> 

                                 <td>
                                            <asp:Button ID="buttReminder"  runat="server" Visible="false" CssClass="reminderButton"  CommandArgument='<%# Eval("inquiry_id")%>' OnClientClick="javascript: show_div()"   BorderStyle="None" /></td>     

                                </tr>

                      </AlternatingItemTemplate>
                      <EmptyDataTemplate>
                      <div style="text-align:center;font-weight:bold">0 Results Founds</div> 
                      </EmptyDataTemplate>
</asp:ListView>

单击视图按钮的

代码如下所示，它绑定网格视图的数据，但数据不显示在网格视图中：

    Button btn = (Button)sender;
    string CommandName = btn.CommandName;
    string inquiryID = btn.CommandArgument;
     id = Convert.ToInt32(btn.CommandArgument.ToString());             
     this.BindGrid();

但是，如果我使用其他按钮尝试相同的代码而不是它的工作。它不能使用列表视图按钮单击..请帮助

Answer 1

按钮单击无效，因为动态创建的按钮没有与之关联的点击事件。做这样的事情。

Button btn = (Button)sender;
string CommandName = btn.CommandName;
string inquiryID = btn.CommandArgument;
id = Convert.ToInt32(btn.CommandArgument.ToString()); 
btn.Click += btn_Click;

和“btn.Click + = btn_Click;”这条线用于事件处理。＆安培;在其中编写绑定代码

private void button_Click(object sender, EventArgs e)
{
   //binding code goes here
}

尝试这样的事情（未经测试）

AsyncPostBackTrigger trigger = new AsyncPostBackTrigger();
trigger.ControlID = btn.UniqueID;
trigger.EventName = "Click";
yourUpdPanel.Triggers.Add(trigger);

ScriptManager scriptManager = ScriptManager.GetCurrent(Page); if (scriptManager != null) { scriptManager.RegisterAsyncPostBackControl(btn); }

单击列表视图中的按钮时不显示网格视图

1 个答案: