Installation note: In the following Install Instructions, please start at the step after the mention of clicking the Download button. Install Instructions Important: Make sure that your computer has the latest Windows service pack and critical updates.
To find security updates, visit Windows Update. The Windows Imaging Component 32 bit can be found here. The Windows Imaging Component 64 bit can be found here. On this page, locate the Download button and then click it to start the download. If you want a smaller x86 only installer you can find it here. If you need to install on ia64 then use the ia64 installer found here.
To start the installation immediately, click Run. To find security updates, visit Windows Update. The Windows Imaging Component 32 bit can be found here. The Windows Imaging Component 64 bit can be found here. On this page, locate the Download button and then click it to start the download. To start the installation immediately, click Run. To save the download to your computer so that you can install it later, click Save.
To cancel the installation, click Cancel. Web Developers and Administrators To install the. Additional Information Additional Requirements for Server Installation If you have to perform a server installation, your computer must have the following software in addition to the basic requirements: Internet Information Services IIS version 6. To access the features of ASP.
NET Framework is installed. File Size: Application Compatibility and Deployment The. Client Profile The. In-Process Side-by-Side Execution This feature enables an application to load and start multiple versions of the. Back to top Core New Features and Improvements The following sections describe new features and improvements provided by the common language runtime and the base class libraries.
Diagnostics and Performance Earlier versions of the. Garbage Collection The. Code Contracts Code contracts let you specify contractual information that is not represented by a method's or type's signature alone. Covariance and Contravariance Several generic interfaces and delegates now support covariance and contravariance.
Tuples The. File System Enumeration Improvements New file enumeration methods improve the performance of applications that access large file directories or that iterate through the lines in large files.
Memory-Mapped Files The. Other New Features The following list describes additional new capabilities, improvements, and conveniences. To support culture-sensitive formatting, the System. The new String. IsNullOrWhiteSpace method indicates whether a string is null, empty, or consists only of white-space characters. New overloads have been added to the String. Concat and String. Join methods that concatenate members of System.
IEnumerable Of T collections. The String. Concat method lets you concatenate each element in an enumerable collection without first converting the elements to strings. Two new convenience methods are available: StringBuilder. Clear and Stopwatch. The new Enum. HasFlag method determines whether one or more bit fields or flags are set in an enumeration value.
The Enum. TryParse method returns a Boolean value that indicates whether a string or integer value could be successfully parsed. SpecialFolder enumeration contains several new folders. You can now easily copy one stream into another with the CopyTo method in classes that inherit from the System. Stream class. New Path. Combine method overloads enable you to combine file paths. IObservable Of T and System. IObserver Of T interfaces provide a generalized mechanism for push-based notifications.
IntPtr and System. UIntPtr classes now include support for the addition and subtraction operators. You can now enable lazy initialization for any custom type by wrapping the type inside a System. Lazy Of T class. SortedSet Of T class provides a self-balancing tree that maintains data in sorted order after insertions, deletions, and searches.
This class implements the new System. ISet Of T interface. The compression algorithms for the System. DeflateStream and System. GZipStream classes have improved so that data that is already compressed is no longer inflated.
Also, the 4-gigabyte size restriction for compressing streams has been removed. The new Monitor. Enter Object, Boolean method overload takes a Boolean reference and atomically sets it to true only if the monitor is successfully entered. You can use the Thread. Yield method to have the calling thread yield execution to another thread that is ready to run on the current processor. The new Microsoft. RegistryOptions enumeration lets you specify a volatile registry key that does not persist after the computer restarts.
Registry keys are no longer restricted to a maximum length of characters. Back to top Parallel Computing The. Back to top Networking Networking improvements include the following: Security improvements for Windows authentication in several classes, including System. HttpWebRequest, System. HttpListener, System. SmtpClient, System. SslStream, and System. Extended protection is available for applications on Windows 7 and Windows Server R2.
New networking performance counters that provide information about HttpWebRequest objects. For more information, see Networking Performance Counters.
In the System. HttpWebRequest class, support for using large byte range headers bit ranges with new overloads for the AddRange method. New properties on the System. SmtpClient and related classes. Improved support for mail headers in the System. MailMessage class. Support for a null cipher for use in encryption. You can specify the encryption policy by using the System. ServicePointManager class and the EncryptionPolicy property.
Constructors for the System. SslStream class now take a System. EncryptionPolicy class as a parameter. Credentials for password-based authentication schemes such as basic, digest, NTLM, and Kerberos authentication in the System.
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