How to get RouteData in Application_BeginRequest or Application_EndRequest

RouteData routeData = RouteTable.Routes.GetRouteData(new HttpContextWrapper(HttpContext.Current));
            if (routeData == null) return;
            string action= routeData.GetRequiredString("action");

How to make a CodeSnippet in Visual Studio for i18n?

If use i18n for ASP.NET MVC, need to add a lot of surroundings for strings.
A CodeSnippet could help a little bit:
In VS, Tools menu, click Code Snippets Manager. then import following xml file:

 
  

   
   i18n
   Code snippet for @_
   Microsoft Corporation
   
    Expansion
    SurroundsWith
   
  
  
   
    
     expression
     Exception type
     SimpleTypeName(global::System.Exception)
    
   
   
        
   
  
 

How to solve JavaScript error: Unable to get value of the property '': object is null or undefined?

There are normally two reasons to cause this problem:
1. Lost reference of needed JavaScript library.
2. The reference JavaScript library is not loaded when your script run.

How to set and get selected value in dropdown list by jQuery

Set selected value:
var selectstring = 'select option[value="' + selectedValue + '"]';
$(selectstring).attr('selected', true);

Get selected value:
$("#dropdownlistId").change(function () {
alert($("#dropdownlistId").val());
});

Javascript Cookie helper

function createCookie(name,value,days) {
 if (days) {
  var date = new Date();
  date.setTime(date.getTime()+(days*24*60*60*1000));
  var expires = "; expires="+date.toGMTString();
 }
 else var expires = "";
 document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
 var nameEQ = name + "=";
 var ca = document.cookie.split(';');
 for(var i=0;i < ca.length;i++) {
  var c = ca[i];
  while (c.charAt(0)==' ') c = c.substring(1,c.length);
  if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
 }
 return null;
}

function eraseCookie(name) {
 createCookie(name,"",-1);
}

Reference:
http://www.quirksmode.org/js/cookies.html