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Editorial Team
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Asked: 2026-05-13T10:47:28+00:00

When building a custom control, how would you access the content between the opening

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When building a custom control, how would you access the content between the opening and closing control tags?

<my:tag runat="server">
 <p>...markup</p>...
</my:tag>

I am currently successfully using the Render method to output arbitrary markeup, but cannot seem to find out how to access the contained markup.

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1 Answer

  1. Editorial Team

    Take a look at this.Controls. This article :
    http://msdn.microsoft.com/en-us/library/system.web.ui.control.controls(VS.71).aspx states “On an ASP.NET page, when controls are added declaratively between the opening and closing tags of a server control, ASP.NET automatically adds the controls to the containing server control’s ControlCollection. ”

    As far as I understand, if you have

    <yourcode:yourcontrol id="asdf" runat="server">
  <p id="innerP" runat="server">Text here</p>
</yourcode:yourcontrol>

    Then it would be possible to call this.FindControl("innerP").text="Other text here, since the P tag is generated on the server side.

    However, if you do not have the runat="server" set on the P element:

    <yourcode:yourcontrol id="asdf" runat="server">
  <p id="innerP">Text here</p>
</yourcode:yourcontrol>

    then you only can only find it through this.controls[0] since all the content will be rendered into a single Literal control.

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