直放站与HiddenField [英] Repeater with HiddenField

问题描述

我有标有AdminGetAllRPTRepeater中以下HiddenField：

I have the following HiddenField within a Repeater labeled "AdminGetAllRPT":

 <asp:Repeater ID="AdminGetAllRPT" runat="server" OnLoad="AdminGetAllRPT_Load">
    <HeaderTemplate>
        <table id="AdminGetAllTBL">
            <tr>
                <td></td>
                <td>Username</td>
                <td>Email Address</td>
                <td>First Name</td>
                <td>Last Name</td>
                <td>Active?</td>
            </tr>
    </HeaderTemplate>
    <ItemTemplate>
       <tr>
           <td>
               <asp:LinkButton ID="AdminEditLnk" runat="server" OnClick="AdminEdit_OnClick">Edit
               <asp:HiddenField ID="editAdminEmail" runat="server" Value='<%# Eval("emailAddress") %>' />
               </asp:LinkButton>
           </td>
           <td><%# Eval("userName") %></td>
           <td><%# Eval("emailAddress") %></td>
           <td><%# Eval("firstName") %></td>
           <td><%# Eval("lastName") %></td>
           <td><%# Eval("isActive") %></td>
       </tr>
    </ItemTemplate>
    <AlternatingItemTemplate>
        <tr class="alternateTemplate">
           <td>
               <asp:LinkButton ID="AdminEditLnk" runat="server" OnClick="AdminEdit_OnClick">Edit
               <asp:HiddenField ID="editAdminEmail" runat="server" Value='<%# Eval("emailAddress") %>' />
               </asp:LinkButton>
           </td>
           <td><%# Eval("userName") %></td>
           <td><%# Eval("emailAddress") %></td>
           <td><%# Eval("firstName") %></td>
           <td><%# Eval("lastName") %></td>
           <td><%# Eval("isActive") %></td>
       </tr>
    </AlternatingItemTemplate>
    <FooterTemplate>
            <tr>
                <td colspan="2"><a href="#">Add Administrator</a></td>
            </tr>
        </table>
    </FooterTemplate>
</asp:Repeater>

我有这种触发code一个LinkBut​​ton：

I have a linkbutton that fires this code:

protected void AdminEdit_OnClick(object sender, EventArgs e)
{
    HiddenField hf = (HiddenField)AdminGetAllRPT.FindControl("editAdminEmail");

但HF快到了空。我在做什么错了？

but the hf is coming up null. What am I doing wrong?

推荐答案

更改... AdminGetAllRPT.FindControl

Change AdminGetAllRPT.FindControl...

到

e.Item.FindControl ...

e.Item.FindControl...

编辑：谢谢你在正确的答案votedown

Thanks for the votedown on a correct answer.

但是，是e.Item.FindControl是你想要什么，因为你正在试图做的是没有按钮的事件，它在中继器的ItemCommand事件。

But yes e.Item.FindControl is what you want because what you're trying to do is not an event on the button, it's an event on the ItemCommand of the repeater.

<asp:Repeater OnItemCommand="MyButtonCommandEvent" ID="AdminGetAllRPT" runat="server" OnLoad="AdminGetAllRPT_Load">

然后在code-后面你可以设置事件

Then in the code-behind you can setup the event

void MyButtonCommandEvent(Object src, RepeaterCommandEventArgs e) {  
   //My event that is raised for each button pressed in the RepeaterItem
   var poo = e.Item.FindControl("myhiddenfieldid") as HiddenField;
}

完成...

要遍历所有RepeaterItems，你可以有一个按钮中继之外（或者页脚什么的，这不是一个中继器ItemCommand）

To iterate over all RepeaterItems, you can have a button outside of the repeater (or maybe in the footer or something, this is not a repeater ItemCommand)

foreach(var item in AdminGetAllRPT.Items)
{
    if (item.ItemType == RepeaterItemType.Item || item.ItemType == RepeaterItemType.AlternatingItem)
    {
        var hiddenField = item.FindControl("hiddenFieldid") as HiddenField;
        //Do Stuff
    }
}

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