Project Element (MSBuild)

[アーティクル]
11/15/2016

Note

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Required root element of an MSBuild project file.

Syntax

<Project InitialTargets="TargetA;TargetB"  
         DefaultTargets="TargetC;TargetD"  
         TreatAsLocalProperty="PropertyA;PropertyB"  
         ToolsVersion=<version number>  
         xmlns="https://schemas.microsoft.com/developer/msbuild/2003">  
    <Choose>... </Choose>  
    <PropertyGroup>... </PropertyGroup>  
    <ItemGroup>... </ItemGroup>  
    <Target>... </Target>  
    <UsingTask.../>  
    <ProjectExtensions>... </ProjectExtensions>  
    <Import... />  
</Project>

Attributes and Elements

The following sections describe attributes, child elements, and parent elements.

Attributes

Attribute	Description
`DefaultTargets`	Optional attribute. The default target or targets to be the entry point of the build if no target has been specified. Multiple targets are semi-colon (;) delimited. If no default target is specified in either the `DefaultTargets` attribute or the MSBuild command line, the engine executes the first target in the project file after the Import elements have been evaluated.
`InitialTargets`	Optional attribute. The initial target or targets to be run before the targets specified in the `DefaultTargets` attribute or on the command line. Multiple targets are semi-colon (;) delimited.
`ToolsVersion`	Optional attribute. The version of the toolset MSBuild uses to determine the values for $(MSBuildBinPath) and $(MSBuildToolsPath).
`TreatAsLocalProperty`	Optional attribute. Property names that won't be considered to be global. This attribute prevents specific command-line properties from overriding property values that are set in a project or targets file and all subsequent imports. Multiple properties are semi-colon (;) delimited. Normally, global properties override property values that are set in the project or targets file. If the property is listed in the `TreatAsLocalProperty` value, the global property value doesn't override property values that are set in that file and any subsequent imports. For more information, see How to: Build the Same Source Files with Different Options. Note: You set global properties at a command prompt by using the /property (or /p) switch. You can also set or modify global properties for child projects in a multi-project build by using the `Properties` attribute of the MSBuild task. For more information, see MSBuild Task.
`Xmlns`	Required attribute (in MSBuild 15.x and earlier). The `xmlns` attribute must have the value of `https://schemas.microsoft.com/developer/msbuild/2003`.

Child Elements

Element	Description
Choose	Optional element. Evaluates child elements to select one set of `ItemGroup` elements and/or `PropertyGroup` elements to evaluate.
Import	Optional element. Enables a project file to import another project file. There may be zero or more `Import` elements in a project.
ItemGroup	Optional element. A grouping element for individual items. Items are specified by using the Item element. There may be zero or more `ItemGroup` elements in a project.
ProjectExtensions	Optional element. Provides a way to persist non-MSBuild information in an MSBuild project file. There may be zero or one `ProjectExtensions` elements in a project.
PropertyGroup	Optional element. A grouping element for individual properties. Properties are specified by using the Property element. There may be zero or more `PropertyGroup` elements in a project.
Target	Optional element. Contains a set of tasks for MSBuild to sequentially execute. Tasks are specified by using the Task element. There may be zero or more `Target` elements in a project.
UsingTask	Optional element. Provides a way to register tasks in MSBuild. There may be zero or more `UsingTask` elements in a project.

Parent Elements

None.

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