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POinclude Javascript server-side from webcontrol code?
 

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  1. POinclude Javascript server-side from webcontrol code?
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    <p>How can I include Javascript onto my page from a webcontrol that is loading, under the prerender event?</p> <p>Here's a function I built that I am using, but it is unfortunately not working.</p> <pre><code>/// &lt;summary&gt; /// Includes a javascript on the page if it is not already included. /// &lt;/summary&gt; /// &lt;param name="url"&gt;The javascript to include on the page.&lt;/param&gt; public static void IncludeJavascript(string url) { string key = MD5.GetMD5Hash(url); ClientScriptManager manager = (HttpContext.Current.Handler as Page).ClientScript; if (!manager.IsClientScriptIncludeRegistered(manager.GetType(), key)) { manager.RegisterClientScriptInclude(manager.GetType(),key, url); } } </code></pre> <p>I am using it like this:</p> <pre><code>ScriptHandler.IncludeJavascript("/scripts/TabControl.js"); </code></pre> <p>Is that correct? Or is the path wrong? Does it need to be a server-side path?</p> <p>The full TabControl I made is this, and as you can see, I am overriding the prerender procedure and using it there. It's just not working:</p> <pre><code>[ToolboxData("&lt;{0}:TabControl Title=\"My tabcontrol\" runat=server&gt;\n&lt;{0}:TabPage Title=\"Default tab\" IsSelected=\"True\"&gt;Insert tab page content here ...&lt;/{0}:TabPage&gt;\n&lt;{0}:TabPage Title=\"Secondary tab\" IsSelected=\"True\"&gt;Insert tab page content here ...&lt;/{0}:TabPage&gt;\n&lt;/{0}:TabControl&gt;")] [ParseChildren(false)] [PersistChildren(true)] public class TabControl : WebControl { private int count; public TabControl() { count = 0; } protected override void OnPreRender(EventArgs e) { ScriptHandler.IncludeJavascript(ResolveUrl("~/scripts/TabControl.js")); base.OnPreRender(e); } [Bindable(true)] [Category("Appearance")] [DefaultValue("")] [Localizable(true)] public virtual string Title { get; set; } protected override HtmlTextWriterTag TagKey { get { return HtmlTextWriterTag.Div; } } public override string ClientID { get { return "tabSectionWrapper"; } } private TabPage selectedTab; public TabPage SelectedTab { get { return selectedTab; } set { selectedTab = value; } } protected override void RemovedControl(Control control) { if (control is TabPage) { count--; base.RemovedControl(control); } } protected override void AddedControl(Control control, int index) { if (control is TabPage) { if ((control as TabPage).IsSelected) { this.SelectedTab = control as TabPage; } (control as TabPage).ID = "" + count++; base.AddedControl(control, index); } } protected override void RenderChildren(HtmlTextWriter writer) { writer.Write("&lt;div id=\"tabContainer\"&gt;&lt;ul class=\"tabs\"&gt;"); foreach (Control control in this.Controls) { if (control is TabPage) { (control as TabPage).RenderTitle(writer); } } writer.Write("&lt;/ul&gt;&lt;/div&gt;"); writer.Write("&lt;div id=\"boxWithContent\"&gt;"); foreach (Control control in this.Controls) { if (control is TabPage) { (control as TabPage).RenderControl(writer); } } writer.Write("&lt;/div&gt;"); } public override void RenderControl(HtmlTextWriter writer) { writer.Write("&lt;h1&gt;"); writer.WriteEncodedText(this.Title); writer.Write("&lt;/h1&gt;"); base.RenderControl(writer); } protected override void RenderContents(HtmlTextWriter output) { base.RenderContents(output); } } </code></pre>
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    1. USMathias Lykkegaard Lorenzen
    1. USMathias Lykkegaard Lorenzen
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      1. VTUpMod
    1. COAt what point are you adding the script, it should be in the Page_PreRender event, versus Page_Load.
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      1. POinclude Javascript server-side from webcontrol code?
      1. USZachary
    2. COI am adding it under a WebControl's prerender event.
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      1. POinclude Javascript server-side from webcontrol code?
      1. USMathias Lykkegaard Lorenzen
    3. COWhy not use the url as the key? A hash of the url is not guaranteed to uniquely identify that string.
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      1. USMagnus
 

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