在ASCX WebControl中检索HtmlGenericControl的内容 [英] Retrieve contents of HtmlGenericControl inside ASCX WebControl

问题描述

我有一个 HtmlGenericControl 这是一个简单的DIV与 runat =服务器

此控件嵌入在位于多个页面上的ASCX WebControl中。在Page_Load，此元素由一个中继器填充，该数据绑定到属于Page Specific的数据库数据。

我遇到的麻烦是ASCX WebControls似乎非常容易阅读自己的元素的内容。

到目前为止，这失败了：
如何在.NET（C＃）中获取UserControl的HTML输出？

我正在寻找一种方法来获取HtmlGenericControl的内容，点击一次按钮。

检索ASCX中特定元素的HTML

解决方案

OK，I have it working（I think ...）

输出

ASPX代码后面

  public override void VerifyRenderingInServerForm（控制控制）
 {
 //base.VerifyRenderingInServerForm(control）; 
} 
  

ASPX标记

 ％@页EnableEventValidation =false..... 
  

< h3>后面的用户控制代码

  protected void Page_Load（object sender，EventArgs e）
 {
 if （！this.IsPostBack）
 {
 var d = new QuestionsContext（）。GetQuestions（）; 
 
 this.repeater.DataSource = d; 
 this.repeater.DataBind（）; 
} 
} 
 
 protected void getContent_Click（object sender，EventArgs e）
 {
 var sb = new StringBuilder（）; 
 
 this.generic.RenderControl（new HtmlTextWriter（new StringWriter（sb）））; 
 
 string s = sb.ToString（）; 
 
 this.Trace.Warn（Server.HtmlEncode（s））; 
 this.message.Text = Server.HtmlEncode（s）; 
} 
  

用户控制标记

 < div runat =serverid =generic> 
< asp：Repeater runat =serverID =repeater> 
< ItemTemplate> 
<％＃Eval（QuestionText）％> 
< / ItemTemplate> 
< / asp：Repeater> 
< / div> 
 
< br /> 
< asp：Button Text =Get contentID =getContentrunat =serverOnClick =getContent_Click/> 
< br /> 
< asp：Label ID =messagerunat =server/> 
  

I have an HtmlGenericControl which is a simple DIV with runat=server

This Control is embedded inside of an ASCX WebControl which resides on multiple pages. At Page_Load this element is populated by a repeater that is data-bound to database data that is Page Specific.

The trouble I'm having is ASCX WebControls don't seem to read the contents of their own elements very easily.

So far this has failed: How do I get the HTML output of a UserControl in .NET (C#)?

I'm looking for a way to get the contents of the HtmlGenericControl inside of a button click. How would I do that?

Simplifying previous question. Retrieve HTML of specific element in ASCX

解决方案

OK, I got it working (I think...)

Output

ASPX Code behind

    public override void VerifyRenderingInServerForm(Control control)
    {
        //base.VerifyRenderingInServerForm(control);
    }

ASPX markup

%@ Page EnableEventValidation="false" .....

User control code behind

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            var d = new QuestionsContext().GetQuestions();

            this.repeater.DataSource = d;
            this.repeater.DataBind();
        }
    }

    protected void getContent_Click(object sender, EventArgs e)
    {
        var sb = new StringBuilder();

        this.generic.RenderControl(new HtmlTextWriter(new StringWriter(sb)));

        string s = sb.ToString();

        this.Trace.Warn(Server.HtmlEncode(s));
        this.message.Text = Server.HtmlEncode(s);
    }

User control markup

<div runat="server" id="generic">
    <asp:Repeater runat="server" ID="repeater" >
        <ItemTemplate>
            <%# Eval("QuestionText") %>
        </ItemTemplate>
    </asp:Repeater>
</div>

<br />
<asp:Button Text="Get content" ID="getContent" runat="server" OnClick="getContent_Click" />
<br />
<asp:Label ID="message" runat="server" />

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