如何从代码后面找到span并为其添加用户控件？

Question

I've a div

<div id="PageContent" runat="server"></div>

Now I'm adding HTML to it from code behind(c#) like this

PageContent.InnerHtml =mytext;

where mytext is the content I want to add in PageContent div, mytext contains a span in between some text(it can be any string), something like this

This is some <span id="span1"> </span> text

How can I find span from code behind and add user control to it?

Answer 1

//This is some <span id="span1" runat="server"> </span>

//In the code behind...

var span1 = this.FindControl("span1") as HtmlGenericControl;
var controlPath = "path of your user control";
var someControl = LoadControl(controlPath);
span1.Controls.Add(someControl);

Answer 2

解析/提取span1从mytext ，创建HtmlGenericControl这个解析信息，将其添加到PageContent格，然后尝试添加用户控件这个span 。

Answer 3

 var span = new HtmlGenericControl("span");
 span.InnerHtml = "Hello ";
 span.Attributes["id"] = "span";
 span.ID = "span";
 String myTesxt = @"This is some " + span.InnerHtml + " text";
 myDiv.InnerHtml = myTesxt;
 span.InnerHtml = "";

 myDiv.Controls.Add(span);
 var a=myDiv.FindControl("span");

Try adding span like this in your Div then you will find it in your code behind. Try this. Hopefully this will solve your purpose.

You can add attributes in the span according to your need.

Answer 4

To add pure tag of the span with the back code please as following code

    StringBuilder sb = new StringBuilder();
    sb.Append("<script>");            
    sb.Append("alert('aa')");
    sb.Append("</script>");
    HtmlGenericControl span = new HtmlGenericControl("span");
    span.InnerHtml = sb.ToString();
    this.form1.Controls.Add(span);