https://msdn.microsoft.com/en-us/library/ms185308.aspx
Multi-project templates act as containers for two or more projects. When a project based on a multi-project template is created from the New Project dialog box, every project in the template is added to the solution.
A multi-project template must include the following items, compressed into a .zip file:
-
A root .vstemplate file for the entire multi-project template. This root .vstemplate file contains the metadata that the New Project dialog box displays, and specifies where to find the .vstemplate files for the projects in this template. This file must be located at the root of the .zip file.
-
One or more folders that contain the files that are required for a complete project template. This includes all code files for the project, and also a .vstemplate file for the project.
For example, a multi-project template .zip file that has two projects could have the following files and directories:
MultiProjectTemplate.vstemplate
\Project1\Project1.vstemplate
\Project1\Project1.vbproj
\Project1\Class.vb
\Project2\Project2.vstemplate
\Project2\Project2.vbproj
\Project2\Class.vb
The root .vstemplate file for a multi-project template differs from a single-project template in the following ways:
-
The Type attribute of the VSTemplate element contains the value ProjectGroup. For example:
-
The TemplateContent element contains a ProjectCollection element that has one or more ProjectTemplateLink elements that define the paths to the .vstemplate files of the included projects. For example:
Project1\Project1.vstemplate Project2\Project2.vstemplate
Multi-project templates also behave differently than normal templates. Multi-project templates have the following unique characteristics:
-
Individual projects in a multi-project template cannot be assigned names by the New Project dialog box. Instead, use the ProjectName attribute on the ProjectTemplateLink element to specify the name for each project. For more information, see the first example in the following section.
-
Multi-project templates can contain projects written in different languages, but the entire template itself can only be put in one category by using the ProjectType element.
To create a multi-project template
-
Create the projects to include in the multi-project template.
-
Create .vstemplate files for every project. For more information, see .
-
Create a root .vstemplate file that to contain the metadata for the multi-project template. For more information, see the first example in the following section.
-
Select the files and folders to include in your template, right-click the selection, click Send To, and then click Compressed (zipped) Folder. The files and folders are compressed into a .zip file.
-
Put the .zip template file in the Visual Studio project template directory. By default, this directory is \My Documents\Visual Studio Version\Templates\ProjectTemplates\.
Example
This example shows a basic multi-project root .vstemplate file. In this example, the template contains two projects, My Windows Application and My Class Library. The ProjectName attribute on the ProjectTemplateLink element sets the name for Visual Studio to assign this project. If the ProjectName attribute does not exist, the name of the .vstemplate file is used as the project name.
Multi-Project Template Sample An example of a multi-project template Icon.ico VisualBasic WindowsApp\MyTemplate.vstemplate ClassLib\MyTemplate.vstemplate
Example
This example uses the SolutionFolder element to divide the projects into two groups, Math Classes and Graphics Classes. The template contains four projects, two of which are placed in each solution folder.
Multi-Project Template Sample An example of a multi-project template Icon.ico VisualBasic MathClassLib1\MyTemplate.vstemplate MathClassLib2\MyTemplate.vstemplate GraphicsClassLib1\MyTemplate.vstemplate GraphicsClassLib2\MyTemplate.vstemplate
Multi-project templates act as containers for two or more projects. When a project based on a multi-project template is created from the New Project dialog box, every project in the template is added to the solution.
A multi-project template must include the following items, compressed into a .zip file:
-
A root .vstemplate file for the entire multi-project template. This root .vstemplate file contains the metadata that the New Project dialog box displays, and specifies where to find the .vstemplate files for the projects in this template. This file must be located at the root of the .zip file.
-
One or more folders that contain the files that are required for a complete project template. This includes all code files for the project, and also a .vstemplate file for the project.
For example, a multi-project template .zip file that has two projects could have the following files and directories:
MultiProjectTemplate.vstemplate
\Project1\Project1.vstemplate
\Project1\Project1.vbproj
\Project1\Class.vb
\Project2\Project2.vstemplate
\Project2\Project2.vbproj
\Project2\Class.vb
The root .vstemplate file for a multi-project template differs from a single-project template in the following ways:
-
The Type attribute of the VSTemplate element contains the value ProjectGroup. For example:
-
The TemplateContent element contains a ProjectCollection element that has one or more ProjectTemplateLink elements that define the paths to the .vstemplate files of the included projects. For example:
Project1\Project1.vstemplate Project2\Project2.vstemplate
Multi-project templates also behave differently than normal templates. Multi-project templates have the following unique characteristics:
-
Individual projects in a multi-project template cannot be assigned names by the New Project dialog box. Instead, use the ProjectName attribute on the ProjectTemplateLink element to specify the name for each project. For more information, see the first example in the following section.
-
Multi-project templates can contain projects written in different languages, but the entire template itself can only be put in one category by using the ProjectType element.
To create a multi-project template
-
Create the projects to include in the multi-project template.
-
Create .vstemplate files for every project. For more information, see .
-
Create a root .vstemplate file that to contain the metadata for the multi-project template. For more information, see the first example in the following section.
-
Select the files and folders to include in your template, right-click the selection, click Send To, and then click Compressed (zipped) Folder. The files and folders are compressed into a .zip file.
-
Put the .zip template file in the Visual Studio project template directory. By default, this directory is \My Documents\Visual Studio Version\Templates\ProjectTemplates\.
Example
This example shows a basic multi-project root .vstemplate file. In this example, the template contains two projects, My Windows Application and My Class Library. The ProjectName attribute on the ProjectTemplateLink element sets the name for Visual Studio to assign this project. If the ProjectName attribute does not exist, the name of the .vstemplate file is used as the project name.
Multi-Project Template Sample An example of a multi-project template Icon.ico VisualBasic WindowsApp\MyTemplate.vstemplate ClassLib\MyTemplate.vstemplate
Example
This example uses the SolutionFolder element to divide the projects into two groups, Math Classes and Graphics Classes. The template contains four projects, two of which are placed in each solution folder.
Multi-Project Template Sample An example of a multi-project template Icon.ico VisualBasic MathClassLib1\MyTemplate.vstemplate MathClassLib2\MyTemplate.vstemplate GraphicsClassLib1\MyTemplate.vstemplate GraphicsClassLib2\MyTemplate.vstemplate