Register JavaScript from within a UserControl in ASP.NET

I declare my javascript in the design page of a usercontrol (ascx). Is there a way to register this javascript block in the Head section? I don't want to use ClientScript.RegisterClientScriptBlock as I don't want to declare my开发者_C百科 javascript in the code-behind. I also cannot move it (entirely) into a separate file, because I use business logic to create it.

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I would say that ClientScript.RegisterClientScriptBlock is the way to register scripts from user/custom controls. But as you don't want to put the script in code-behind, you can write the relevant code in ascx page inside server tags. For example,

<script runat="server">

protected override OnPreRender(sender as object, e as EventArgs)
{
   base.onPreRender(sender, e);

   string script;
   // Logic to build the script goes here

   this.Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "Key_" + this.ClientID, script, true);
}

</script>