Javascript functions inside ASP.NET User Control

Question

I created ASP.NET user control with javascript function :

<%@ Control Language=\"C#\" AutoEventWireup=\"true\" CodeBehind=\"TestControl.ascx.cs\" Inherits         


        

Answer 1

You need to use this.id

$(document).ready(function () {
    load_v<%= this.ID %>    
});

function load_v<%= this.ID %>(fromclick) {
    alert('anything');
}

So that even if you need two or more same controls in the same page they will have different ids. Hope this Helps! cheers :)

Answer 2

I found a solution in another site which allows you to use external file

if (!Page.ClientScript.IsClientScriptIncludeRegistered("key"))

{

   string url = ResolveClientUrl("~/Scripts/file.js");

   Page.ClientScript.RegisterClientScriptInclude("key", url);

}

Answer 3

You need to register your scripts with ClientScriptManager - this way they can be registered once, regardless of how often the control has been added to the page:

// Get a ClientScriptManager reference from the Page class.
ClientScriptManager cs = Page.ClientScript;

// Check to see if the startup script is already registered.
if (!cs.IsStartupScriptRegistered(cstype, csname1))
{
  String cstext1 = "alert('Hello World');";
  cs.RegisterStartupScript(cstype, csname1, cstext1, true);
}