Using javascript in ASP.NET Composite control

Question

I have a custom asp.net server control to display images.What I need now is to draw a rectangle on the center of image and the rectangle should be re sizable by dragging on its edges.Is it possible to accomplish this using JavaScript ?. I need to embed that script in that control. Is it possible ?

Do any of these do what you want? pixelzdesign.com/blog_view.php?id=59 GIYF — dash
– dash, Commented Apr 3, 2012 at 9:26
Can I do it inside the control.I cannot use a separate JavaScript file. I have to do it everything inside the control itself. I am using asp.net 2.0 without ajax — Senan
– Senan, Commented Apr 3, 2012 at 9:37

Dave D · Accepted Answer · 2012-04-03 11:07:40Z

6

You can include a javascript file in a server control.

Add a reference to the assemblyinfo.cs

[assembly: WebResource("Custom.js", "text/javascript")]

Then a reference on the PreRender:

protected override void OnPreRender(EventArgs e)
{
    base.OnPreRender(e);
    string resourceName = "Custom.js";

    ClientScriptManager cs = this.Page.ClientScript;
    cs.RegisterClientScriptResource(typeof(CustomControls.Custom), resourceName);
}

Here is a nice article on the subject

answered Apr 3, 2012 at 11:07

Dave D

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3 Comments

Senan Over a year ago

I've already tried this. But it is not working in my case :-( . Actually my control has a label,text box and Image Control.What I need is to draw a re-sizable rectangle on the image

Dave D Over a year ago

You could try using jquery to help with the resizable rectangle. check out resizable

Senan Over a year ago

How do I access controls from the script.When I tried accessing using getElementById("controlname") it returns null

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