What's New with ASP.Net 4.0

Here is some links as well as some list of changes in ASP.Net 4.0.
(1) string.IsNullOrWhiteSpace added for String

- C# 4.0-string.IsNullOrWhiteSpace()

(2) EnumType.HasFlag added for the Enum

- Enum.HasFlag method in C# 4.0

(3) StringBuilder.Clear() method added for the StringBuilder

- .NET 4.0- A new method StringBuilder.Clear() to clear stringbuilder

(4) SEO Enhancement
    - HemlMeta class added for the elements which contains Name, Content properties
    - New Page.MetaKeywords and Page.MetaDescription properties
    - New URL Routing support for ASP.NET Web Forms
    - New Response.RedirectPermanent() method

- What's New in ASP.NET 4.0 – SEO Enhancements with MetaKeywords and MetaDescription properties
- SEO Improvements with ASP.NET 4

(5) ClientIDMode property for the page element

- What's New in ASP.NET 4.0 - ClientID Generation for a Cleaner MarkUp

(6) ViewStateMode - lets you disable ViewState at a Parent level and then enable it for the child controls that

require it

- What's New in ASP.NET 4.0 – Better ViewState Control

(7) RepeatLayout property for CheckBoxList and RadioButtonList Controls

- ASP.NET 4.0 New Feature- RepeatLayout property for CheckBoxList and RadioButtonList Controls.

(8) FormView Control Enhancement –RenderOuterTable Property

- ASP.NET 4.0-FormView Control Enhancement –RenderOuterTable Property

(9) Zip operator in Linq

- Zip operator in Linq with .NET 4.0

(10) CompressionEnabled Property in session state

- CompressionEnabled Property in session state

(11) List View Control Enhancement

- ASP.NET 4.0 –List View Control Enhancement

(12) Menu control enhancement

- ASP.NET 4.0- Menu control enhancement.

(13) GridView's New Sorting Styles

- A Look at the GridView's New Sorting Styles in ASP.NET 4.0

(14) GUID.Parse Method added

- .NET Framework 4.0-Guid.Parse Method 

(15) ASP.NET 4.0 Code Access Security.Net QA Team 

What is New in ASP.NET 4.0 Code Access Security.Net QA Team     

List of the all changes for ASP.NET 4.0
- ASP.NET 4 and Visual Studio 2010 Web Development Overview: The Official Microsoft ASP.NET Site

- What's New in ASP.NET 4 and Visual Web Developer

- Links to my “Best of 2010” Posts's Blog