Creating installations for .NET Framework

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2 Νοε 2013 (πριν από 4 χρόνια και 8 μήνες)

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Creating Installations for
Microsoft’s .NET Framework
using Wise for Windows Installer
Abstract This paper provides an overview of creating
an installation for an application created for Microsoft’s
.NET Framework. By following the process, a software
developer can install private and shared .NET assemblies
using a Windows Installer (.MSI) package.
Creating Installations for .NET - 2 - Copyright 2001, 2002 by Wise Solutions, Inc.
The .NET Framework makes it much easier to deploy certain types of
applications, while others become more complicated and increase the
reliance upon Microsoft’s Windows Installer service. As Microsoft
“The .NET Framework simplifies deployment by making zero-impact
install and XCOPY deployment of applications feasible. Because all
requests are resolved first to the private application directory, simply
copying an application's directory files to disk is all that is needed to
run the application. No registration is required.
This scenario is particularly compelling for Web applications, Web
Services, and self-contained desktop applications. However, there
are scenarios where XCOPY is not sufficient as a distribution
mechanism. An example is when the application has little private
code and relies on the availability of shared assemblies, or when the
application is not locally installed (but rather downloaded on
demand). For these cases, the .NET Framework provides extensive
code download services and integration with the Windows Installer.
The code download support provided by the .NET Framework offers
several advantages over current platforms, including incremental
download, code access security (no more Authenticode dialogs), and
application isolation (code downloaded on behalf of one application
doesn't affect other applications). The Windows Installer is another
powerful deployment mechanism available to .NET applications. All
of the features of Windows Installer, including publishing,
advertisement, and application repair will be available to .NET
applications in Windows Installer 2.0”
Excerpt from Microsoft .NET Framework FAQ, July 2001
Installation Options for Simple Applications
For a .NET application that only uses managed code and private
assemblies, the installation process can be as simple as copying files to
the destination PC. Even in this case, however, developers typically
need to create an installation that provides a user-friendly interface to the
end user, pre-installs the required runtime, and has a compressed,
single-file installation that can be easily deployed.
Installation Options for Complex Applications
For .NET applications that use shared assemblies or have a mix of
managed and unmanaged code, the Windows Installer service should be
used to install the application. The Windows Installer service manages all
installed components on a system and can even fix components if they
become corrupted.
Wise for Windows Installer makes this installation technology accessible
to developers by providing a visual, step-by-step approach to creating
installations for .NET applications. This white paper describes the
Creating Installations for .NET - 3 - Copyright 2001, 2002 by Wise Solutions, Inc.
process of creating a .NET installation, as well as discussing how Wise
for Windows Installer simplifies this process.
Before you begin to create an installation for your .NET application,
identify the following information about your application:
1. Gather all of your assemblies, Win32 and .NET, and their associated
manifests into a common location.
2. Determine where the assemblies are to be installed (see the section
titled Best Practices for more information).
3. Generate PrivateKeyTokens for the assemblies and digitally sign all
the assemblies if they are to be installed to the Global Assembly
Preparing Wise for Windows Installer
Wise for Windows Installer 4.0 includes the necessary features for
creating installations for .NET. To take advantage of these features, you
need to have the Windows Installer 2.0 runtime and the Common
Language Runtime installed on your system. You must install the .NET
Framework installation to obtain the Common Language Runtime. The
Windows Installer runtime is automatically installed along with all
versions of Wise for Windows Installer, and the .NET Framework is
optionally installed with Wise for Windows Installer 4.01 or later.
If you have the .NET Framework installed, you are ready to work on your
.NET installation. Either create a new installation or open an existing
installation that you wish to convert to .NET. Go to the Product Details
page in Installation Expert and change the Application Type drop-down
list to ".NET Application." Now .NET features are enabled in the current
installation. A standard Win32 installation does not have assemblies, a
mixed installation has both Win32 and .NET components, and a .NET
installation has only .NET components.
You can customize how Wise for Windows Installer handles the
assemblies added to your installation by changing the settings on the
.NET Assemblies tab of the Preferences dialog.
Getting Started
Creating Installations for .NET - 4 - Copyright 2001, 2002 by Wise Solutions, Inc.
The Default Application Type field specifies the installation type of all
future installations you create, but does not change the current
installation. The Rescan COM interop registry keys on compile
checkbox determines how Wise handles the scanning of COM interop
registry entries.
In addition, you can set Wise up to automatically add any dependency
assemblies. When Scan Dependencies is set to “Always scan
dependencies”, Wise scans the assembly manifest for any dependencies
and automatically adds those assemblies to the installation, along with
the required assembly entries in the Windows Installer tables. For full
control, this can be turned off and you can be prompted to scan for
dependencies or you can add all files manually. This enables you, as the
installation package author, to have a full range of control throughout the
creation of the installation.
Once you have customized .NET preferences, each future project you
create with Wise for Windows Installer inherits the settings from these
global options. Now you are ready to start adding components to your
Creating Installations for .NET - 5 - Copyright 2001, 2002 by Wise Solutions, Inc.
You should add the Common Language Runtime redistributable runtime
to your installation to ensure that all the necessary runtimes are pre-
installed on the destination PC. To add the Common Language Runtime,
go to the Releases page of Installation Expert, double-click the release
you are currently working with, and in Release Details, choose to pre-
install the .NET common language runtime from the Pre-install Options
drop-down list.
It is generally a good idea to include any runtimes that are required by
the application you're installing. This prevents runtime errors for end
users and can significantly decrease help desk calls. The .NET
Framework runtime includes BOTH the Common Language Runtime and
the Windows Installer 2.0 runtimes. Therefore, when including the .NET
Framework runtime the Windows Installer runtime does not need to be
Common Language
Creating Installations for .NET - 6 - Copyright 2001, 2002 by Wise Solutions, Inc.
Within the Wise for Windows Installer 4.0 Professional Edition, you can
use WebDeploy to deploy applications over the Web. WebDeploy
contains a feature to optionally download the Windows Installer and
.NET runtimes if the user requires them. This can significantly reduce
download times and reduces the number of concurrent connections on
your http or ftp servers.
Creating Installations for .NET - 7 - Copyright 2001, 2002 by Wise Solutions, Inc.
Navigate to the Files page in Installation Expert. From here, you can
drag and drop your assemblies into the appropriate directory. As you add
assemblies, Wise automatically adds the appropriate table entries to
install and register your assemblies in their destination location.
Global Assembly Cache, WinSxS, Private Assemblies
For those assemblies that should be installed into the Global Assembly
Cache, select the files and drag and drop them into the Global Assembly
Cache folder.
Note: To install .NET Assemblies into the Global Assembly Cache, they
must be Strongly Named. You can find out more on this topic in the .NET
Framework SDK.
To install your Win32 assemblies into the WinSxS (side-by-side) folder,
simply navigate to the WinSxS folder under the Windows folder in the
lower left, then add your assembly files. Wise automatically designates
the .MANIFEST file as the file in your component that contains the
To install your assemblies to a private location, you can add them as you
would add any other file to your installation directory.
To customize any of these automated entries, double-click the assembly
file you’d like to edit and the File Details dialog appears.
Adding Files
Creating Installations for .NET - 8 - Copyright 2001, 2002 by Wise Solutions, Inc.
In the File Details dialog, there is an option to register each assembly for
reference within Visual Studio .NET. When marked, this option creates a
registry entry for this assembly. Then, the next time Visual Studio.NET is
opened, the assembly is available for any future projects via the Project
> References menu item.
Note: You cannot drag and drop files directly from the Global Assembly
Cache (C:\WINNT\Assembly folder) on your development machine.
In addition, any of these entries can be edited from the Table editor.
Wise gives full access to all tables via the Tables tab of Setup Editor to
ensure that you have full control throughout the installation authoring
process. (See the section titled Behind the Scenes... for specific
examples of how to edit these entries.)
When you are using Wise for Windows Installer to automate the table
entries for your .NET application, there is a lot going on behind the
scenes. A Windows Installer package includes a number of database
tables that describe the application to Microsoft’s Windows Installer
service. The tables involved in installing an assembly are MsiAssembly
and MsiAssemblyName. These tables are automatically filled in when
you set the installation to be a “.NET Application” on the Product Details
page. The tables that are described below store the necessary data that
Windows Installer needs to install and/or register your assembly in the
destination location.
Behind the Scenes...
Creating Installations for .NET - 9 - Copyright 2001, 2002 by Wise Solutions, Inc.
MsiAssembly Table
The MsiAssembly table contains one record for each assembly to be
installed. There are five fields in the MsiAssembly table. The example
MsiAssembly table shown below is referenced in examples later in this
Component_. This is the foreign key to the Component record that
contains the assembly. If your assembly is comprised of multiple files,
they should be authored into the same component.
Feature_. This field specifies the feature in the installation with which the
assembly is associated.
File_Manifest. This field is a foreign key to the File table for the file that
contains the manifest for the assembly. If the assembly is comprised of
many files, this entry will be the file in the assembly that contains the
assembly manifest information. A Portable Executable is a self-contained
.NET assembly. It contains the compiled assembly in addition to the
assembly manifest and Strong Name information. When working with
Portable Executables (PE), the File_Manifest field contains the Portable
Executable file name. This is because the manifest is self-contained
within the PE .dll or .exe.
File_Application. This field should be blank if the assembly is to be
installed into the Global Assembly Cache on the destination PC. For
private assemblies, the File_Application field contains a foreign key to
the File table for the main application file. Windows Installer installs the
assembly into the directory where the component is installed, as
determined in the Component table’s Directory field. If the component is
installed into the INSTALLDIR directory, the assembly is then installed in
that directory, along with the application files. The directory assigned to
this component is resolved in the Directory table and can be set at
runtime by the user on the “Single Feature Destination” dialog.
Private Assembly (NOT available with Windows 95, 98, or NT)
In the example MsiAssembly table shown above, Component2 will
be installed into the application directory. This means it is a private
assembly and only available for the application that's being installed.
Component1 is a shared assembly and will be installed and
registered into the Global Assembly Cache on the destination PC.
WinSxS Assembly (only available with Windows XP)
When Win32 assemblies are installed into the WinSxS directory,
they are not registered globally on the system, as they are when
installed into the Global Assembly Cache. However, they are
available to any application that references them. To enable side-by-
side sharing, your component must be installed into the WinSxS
folder. During installation of the application, Windows Installer
Creating Installations for .NET - 10 - Copyright 2001, 2002 by Wise Solutions, Inc.
resolves the Directory table to obtain the path to the WinSxS folder if
the File_Application field is not null. For assemblies to be installed
into the WinSxS directory, a .LOCAL file is not needed, because it
not utilized in this scenario.
Shared Assembly (Global Assembly Cache or GAC)
When the File_Application table is set to a null value, Windows
Installer ignores the component’s destination directory and installs
the entire component into the Global Assembly Cache. The
assembly is then available to all other applications that use this
assembly version. In the example above, Component2 will be
installed into the Global Assembly Cache, based on the null value in
the File_Application field.
Attributes. This field is used to determine if the assembly is a Win32 or
a .NET Application. For .NET assemblies, the value authored into this
field would be 0 (zero), and if the assembly is a Win32 application, the
value would be 1.
MsiAssemblyName Table
For each assembly attribute (as authored in the manifest), a record
initializing the attribute and its data value must be entered into the
MsiAssemblyName table. Wise for Windows Installer has added the
ability to “scan” the assembly manifest to automate this process.
Windows Installer needs these attributes to appropriately register the
assembly when it is installed. When you add an assembly, this table is
automatically propagated with the necessary data. You can modify the
entries that Wise creates in this table by going to the Tables tab of Setup
Editor and scrolling to the MsiAssemblyName table.
Examples of possible entries are as follows:
Component. This field contains one of the Component_ values authored
into the MsiAssembly table that represents an assembly.
Name. This field contains one of the assembly attributes (as defined in
the manifest).
Value. This field contains the string value of that attribute.
The entries are variable, and this example shows only a few possible
entries. For all possible attributes, see the .NET Framework SDK. In the
Creating Installations for .NET - 11 - Copyright 2001, 2002 by Wise Solutions, Inc.
example above, Name, Version and Culture are pulled directly from the
string that is entered into the manifest.
At this point, you have enough information to distribute .NET and Win32
assemblies. After you add all of the assemblies needed for your
application, the installation package is ready to be compiled and
distributed. Compilation of your Wise project produces an .MSI or .EXE,
depending on the settings you have set on the Releases Page of
Installation Expert. After you create the .MSI or .EXE, your project can be
Managed Assemblies that are shared with many other applications
authored by different vendors should be installed into the Global
Assembly Cache. This is a central repository of all shared assemblies.
The installation of assemblies into the Global Assembly Cache should be
well planned. Assemblies should not arbitrarily placed in the Global
Assembly Cache without justification.
The WinSxS folder is a subdirectory located off the Windows directory on
Windows XP. Both managed and unmanaged assemblies can be
installed into the WinSxS directory. It is good common practice to install
assemblies that are shared with applications created by the same vendor
into the WinSxS directory.
In addition, assemblies can be stored in the application directory if they
are to be private, or if they are only used by the application being
installed. In this case, it makes most sense not to share them, since no
other application will be calling them.
Wise Solutions, Inc. is committed to providing the most current and
thorough support for Microsoft’s .NET Framework. This is exemplified by
the timely .NET updates to our Wise for Windows Installer product line,
the frequent updates to white papers and resource materials, as well as
our close relationship with several key Microsoft teams.
Please keep checking our Web site for product updates and support
documentation to aid you in your transition to the .NET Framework.
Compilation and
Best Practices
Creating Installations for .NET - 12 - Copyright 2001, 2002 by Wise Solutions, Inc.
The following pages of the .NET Framework Developer’s Guide provide
an excellent background for the information in this white paper.
Shared and Private Assemblies Described
Global Assembly Cache
Redirecting Assembly Versions
Best Practices: When to provide a shared component as a side-by-
side assembly
Here are some additional links that provide a better understanding of the
underlying concepts of Microsoft’s .NET Framework.
Microsoft .NET Framework FAQ
Simplifying Deployment and Solving DLL Hell with the .NET
Download Page for .NET Framework SDK
Download for Windows Installer 2.0 Runtime
For Windows 9x:
For Windows NT 4.0 \ Windows 2000:
Wise for Windows Installer Resource Kit
Support for Shared and Private Assemblies
Definitions of common .NET terminology
 2001, 2002 Wise Solutions, Inc. All rights reserved.
Wise Solutions and Wise for Windows Installer are registered trademarks of Wise
Solutions, Inc. Other companies and products mentioned herein may be the trademarks of
their respective owners.
Wise Solutions, Inc. • 47911 Halyard • Plymouth, MI 48170 • USA
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