Using C# 7.1 with MSBuild

Using C# 7.1 with MSBuild

To use C# 7.1 features in MSBuild, you need to have the appropriate version of the C# compiler installed. C# 7.1 was introduced in Visual Studio 2017 version 15.3, so you need to have this version or later installed on your system.

Once you have the appropriate version of the C# compiler installed, you can use the LangVersion property in your project file to specify the language version. For example, to use C# 7.1 in your project, add the following line to your .csproj file:

<PropertyGroup> <LangVersion>7.1</LangVersion> </PropertyGroup>

Note that the LangVersion property is case-sensitive and must be set to "7.1" exactly (without quotes). If you use a different value or specify it in the wrong case, MSBuild will default to the lowest supported version.

Once you have set the LangVersion property, you can use C# 7.1 features in your code, such as async main methods, default literal expressions, and inferred tuple names.

Examples

  1. "C# 7.1 features in MSBuild"

    • Description: Learn how to leverage C# 7.1 features within MSBuild scripts to enhance your build process. Explore features like async main and default literal expressions for concise and efficient code.
    • Code Implementation:
      <Target Name="UseCSharp71Features" AfterTargets="Build"> <Exec Command="$(CSharpCompiler) /langversion:7.1 /out:MyApp.exe /main:MyNamespace.MyClass.MainAsync $(CompileFiles)" /> </Target>

  2. "Conditional expressions in C# 7.1 MSBuild"

    • Description: Discover how to implement conditional expressions in MSBuild scripts using C# 7.1 syntax. This can be useful for making build decisions based on certain criteria.
    • Code Implementation:
      <PropertyGroup> <BuildConfiguration Condition="'$(Configuration)' == 'Debug'">Debug</BuildConfiguration> <BuildConfiguration Condition="'$(Configuration)' == 'Release'">Release</BuildConfiguration> </PropertyGroup>

  3. "Nullable reference types in MSBuild using C# 7.1"

    • Description: Explore the integration of C# 7.1 nullable reference types within MSBuild scripts. Learn how to handle nullable references to enhance code safety during the build process.
    • Code Implementation:
      <PropertyGroup> <NullableReference>enable</NullableReference> </PropertyGroup>

  4. "MSBuild task with tuple types in C# 7.1"

    • Description: Implement MSBuild tasks using C# 7.1 tuple types for efficient data representation. This query focuses on leveraging the power of tuples in your build scripts.
    • Code Implementation:
      <PropertyGroup> <TaskParameters>(string, int)('parameterValue', 42)</TaskParameters> </PropertyGroup>

  5. "Pattern matching in C# 7.1 with MSBuild"

    • Description: Learn how to use pattern matching in MSBuild scripts with the enhancements introduced in C# 7.1. This can simplify conditional logic and make your build scripts more expressive.
    • Code Implementation:
      <Choose> <When Condition="'$(Configuration)' == 'Debug'"> <PropertyGroup> <Optimize>false</Optimize> </PropertyGroup> </When> <Otherwise> <PropertyGroup> <Optimize>true</Optimize> </PropertyGroup> </Otherwise> </Choose>

  6. "Using async main in MSBuild with C# 7.1"

    • Description: Explore the asynchronous capabilities of C# 7.1 by using async main in MSBuild scripts. This can be beneficial for tasks that involve asynchronous operations during the build process.
    • Code Implementation:
      <Target Name="AsyncBuild" AfterTargets="Build"> <Exec Command="$(CSharpCompiler) /langversion:7.1 /out:MyApp.exe /main:MyNamespace.MyClass.MainAsync $(CompileFiles)" /> </Target>

  7. "MSBuild script for default literal expressions in C# 7.1"

    • Description: Implement MSBuild scripts that take advantage of default literal expressions introduced in C# 7.1. This enables concise and expressive default values in your build process.
    • Code Implementation:
      <PropertyGroup> <DefaultLogLevel>Information</DefaultLogLevel> </PropertyGroup>

  8. "Using MSBuild properties with C# 7.1"

    • Description: Learn how to work with MSBuild properties using C# 7.1 syntax. This query focuses on using C# 7.1 features to manipulate and customize the build process through properties.
    • Code Implementation:
      <PropertyGroup> <CustomProperty>SomeValue</CustomProperty> </PropertyGroup>

  9. "MSBuild targets with ref locals in C# 7.1"

    • Description: Implement MSBuild targets using C# 7.1 ref locals for efficient memory management and manipulation of values. This can optimize certain build processes where references are crucial.
    • Code Implementation:
      <Target Name="ModifyReference" AfterTargets="Build"> <ItemGroup> <ReferenceItem Include="@(References)" /> </ItemGroup> </Target>

  10. "Using C# 7.1 deconstruction in MSBuild"

    • Description: Explore the deconstruction features introduced in C# 7.1 and understand how to apply them within MSBuild scripts for more convenient and readable code.
    • Code Implementation:
      <PropertyGroup> <Coordinates>(42, 73)</Coordinates> </PropertyGroup>

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