Question

I have a javascript function that returns an array.

I would like to know

• (a) how to call the Javascript function in OnInit or Onload
• (b) The javascript function returns an array and I want it to be stored within an array in my c# code.

Please suggest.

Thanks.

Update1: Javascript function is something like below.

function RenderUrl() 
{
    var url = "http://myurl.com/mypage?Id=420&Width=30"; //this is a dummy url.

    var qsBegin = url.indexOf("?");
    var qsPattern = new RegExp("[?&]([^=]*)=([^&]*)", "ig");
    var match = qsPattern.exec(url);
    var params = new Array();

    while (match != null) 
        {
            var matchID = match[1];
                if ( matchID.charAt(0) == "&" ) 
            {
                    matchID = matchID.substr(1);
                }

                if ( params[match[1]] != null && !(params[match[1]] instanceof Array) ) 
            {
                    var subArray = new Array();
                    subArray.push(params[match[1]]);
                    subArray.push(unescape(match[2]));
                    params[match[1]] = subArray;
                }
            else if ( params[match[1]] != null && params[match[1]] instanceof Array ) 
            {
                    params[match[1]].push(unescape(match[2]));
            }
            else 
            {
                params[match[1]]=unescape(match[2]);
                }
            match = qsPattern.exec(url);
        }
    return params;
}

Update 2: My c# code so far (not working as expected but I am checking currently)

 private void ParseUrl(string Url)
{
    int WhereToBegin = Url.IndexOf("?");
    string pattern = @"[?&]([^=]*)=([^&]*)";
    Regex rgx = new Regex(pattern, RegexOptions.IgnoreCase);
    MatchCollection matches = rgx.Matches(Url);
    while (matches != null)
    {
        string matchID = matches[0].ToString();
        if (matchID.Substring(0, 1) == "&")
        {
            matchID = matchID.Substring(1);
        }

    //Push to the new array named PARAMS here (under construction)
      ..
      ..    
    //End array construction.

        matches = rgx.Matches(Url);
    }
    //Finally return the array once it is working fine.
}

Answer 1

The javascript that you posted just extracts the parameters from the URL of the page. You don’t need to use javascript to get that information in ASP.NET, you can get it from C# directly by looking at Request.QueryString (among other ways)