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The .NET Framework 4.5 is a redistributable runtime. If you develop apps for this version of the .NET Framework, you can include (chain) .NET Framework 4.5 setup as a prerequisite part of your app's setup. To present a customized or unified setup experience, you may want to silently launch .NET Framework 4.5 setup and track its progress while showing your app's setup progress. To enable silent tracking, .NET Framework 4.5 setup (which can be watched) defines a protocol by using a memory-mapped I/O (MMIO) segment to communicate with your setup (the watcher or chainer). This protocol defines a way for a chainer to obtain progress information, get detailed results, respond to messages, and cancel the .NET Framework 4.5 setup.

• Users Filename Product Company Version Variant; 15.63%%SystemDiskRoot% AMD Support 13-12win7win864ddcccwhql Packages Apps DotNet45 dotnet45 dotnetfx45fullx86x64.exe.
• Dotnetfx45fullx86x64.exe is known as Microsoft.NET Framework 4.5, it also has the following name Microsoft.NET Framework 4.5 RC or Microsoft.NET Framework 4.5 Beta and it is developed by Microsoft Corporation. We have seen about 100 different instances of dotnetfx45fullx86x64.exe in different location.

• Invocation. To call .NET Framework 4.5 setup and receive progress information from the MMIO section, your setup program must do the following:

  1. Call the .NET Framework 4.5 redistributable program:

     dotNetFx45_Full_x86_x64.exe /q /norestart /pipe section-name

     Where section name is any name you want to use to identify your app. .NET Framework setup reads and writes to the MMIO section asynchronously, so you might find it convenient to use events and messages during that time. In the example, the .NET Framework setup process is created by a constructor that both allocates the MMIO section (TheSectionName) and defines an event (TheEventName):

     Please replace those names with names that are unique to your setup program.

  2. Read from the MMIO section. In the .NET Framework 4.5, the download and installation operations are simultaneous: One part of the .NET Framework might be installing while another part is downloading. As a result, progress is sent back (that is, written) to the MMIO section as two numbers (m_downloadSoFar and m_installSoFar) that increase from 0 to 255. When 255 is written and the .NET Framework exits, the installation is complete.

• Exit codes. The following exit codes from the command to call the .NET Framework 4.5 redistributable program indicate whether setup has succeeded or failed:

  • 0 - Setup completed successfully.

  • 3010 – Setup completed successfully; a system restart is required.

  • 1602 – Setup has been canceled.

  • All other codes - Setup encountered errors; examine the log files created in %temp% for details.

• Canceling setup. You can cancel setup at any time by using the Abort method to set the m_downloadAbort and m_ installAbort flags in the MMIO section.

Chainer Sample

The Chainer sample silently launches and tracks .NET Framework 4.5 setup while showing progress. This sample is similar to the Chainer sample provided for the .NET Framework 4. However, in addition, it can avoid system restarts by processing the message box for closing .NET Framework 4 apps. For information about this message box, see Reducing System Restarts During .NET Framework 4.5 Installations. You can use this sample with the .NET Framework 4 installer; in that scenario, the message is simply not sent.

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Warning

You must run the example as an administrator.

You can download the complete Visual Studio solution for the .NET Framework 4.5 Chainer Sample from the MSDN Samples Gallery.

The following sections describe the significant files in this sample: MMIOChainer.h, ChainingdotNet4.cpp, and IProgressObserver.h. Bmw epc download.

MMIOChainer.h

• The MMIOChainer.h file (see complete code) contains the data structure definition and the base class from which the chainer class should be derived. The .NET Framework 4.5 extends the MMIO data structure to handle data that the .NET Framework 4.5 installer needs. The changes to the MMIO structure are backward-compatible, so a .NET Framework 4 chainer can work with .NET Framework 4.5 setup without requiring recompilation. However, this scenario does not support the feature for reducing system restarts.

  A version field provides a means of identifying revisions to the structure and message format. The .NET Framework setup determines the version of the chainer interface by calling the VirtualQuery function to determine the size of the file mapping. If the size is large enough to accommodate the version field, .NET Framework setup uses the specified value. If the file mapping is too small to contain a version field, which is the case with the .NET Framework 4, the setup process assumes version 0 (4). If the chainer does not support the version of the message that .NET Framework setup wants to send, .NET Framework setup assumes an ignore response.

  The MMIO data structure is defined as follows:

• The MmioDataStructure data structure should not be used directly; use the MmioChainer class instead to implement your chainer. Derive from the MmioChainer class to chain the .NET Framework 4.5 redistributable.

IProgressObserver.h

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• The IProgressObserver.h file implements a progress observer (see complete code). This observer gets notified of download and installation progress (specified as an unsigned char, 0-255, indicating 1%-100% complete). The observer is also notified when the chainee sends a message, and the observer should send a response.

Dotnetfx45_full_x86_x64.exe /q /norestart /chainingpackage Admindeployment

ChainingdotNet4.5.cpp

• The ChainingdotNet4.5.cpp file implements the Server class, which derives from the MmioChainer class and overrides the appropriate methods to display progress information. The MmioChainer creates a section with the specified section name and initializes the chainer with the specified event name. The event name is saved in the mapped data structure. You should make the section and event names unique. The Server class in the following code launches the specified setup program, monitors its progress, and returns an exit code.

  The installation is started in the Main method.

• Before launching the installation, the chainer checks to see if the .NET Framework 4.5 is already installed by calling IsNetFx4Present:

• You can change the path of the executable (Setup.exe in the example) in the Launch method to point to its correct location, or customize the code to determine the location. The MmioChainer base class provides a blocking Run() method that the derived class calls.

• The Send method intercepts and processes the messages. In this version of the .NET Framework, the only supported message is the close application message.

• Progress data is an unsigned char between 0 (0%) and 255 (100%).

• The HRESULT is passed to the Finished method.

  Important

  The .NET Framework 4.5 redistributable typically writes many progress messages and a single message that indicates completion (on the chainer side). It also reads asynchronously, looking for Abort records. Apa manual 7th edition free download. If it receives an Abort record, it cancels the installation, and writes a finished record with E_ABORT as its data after the installation has been aborted and setup operations have been rolled back.

A typical server creates a random MMIO file name, creates the file (as shown in the previous code example, in Server::CreateSection), and launches the redistributable by using the CreateProcess method and passing the pipe name with the -pipe someFileSectionName option. The server should implement OnProgress, Send, and Finished methods with application UI-specific code.

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See also