Tooling and Project Concepts

Project File Parts

Model the target framework value found in a C# project file.

tooling A `.csproj` file stores project metadata such as the target framework, which guides the build tool.

Project File Parts

targetFramework
ProjectFileParts.cs
Replay: real traced execution (multi-file project)
using System;

class Program
{
    static void Main()
    {
        string targetFramework = "net8.0";
        bool currentLts = targetFramework == "net8.0";
        string projectType = targetFramework.StartsWith("net") ? "sdk-style" : "legacy";

        Console.WriteLine($"targetFramework={targetFramework}");
        Console.WriteLine($"projectType={projectType}");
        Console.WriteLine($"currentLts={currentLts}");
    }
}

using System;

class Program
{
    static void Main()
    {
        string targetFramework = "net6.0";
        bool currentLts = targetFramework == "net8.0";
        string projectType = targetFramework.StartsWith("net") ? "sdk-style" : "legacy";

        Console.WriteLine($"targetFramework={targetFramework}");
        Console.WriteLine($"projectType={projectType}");
        Console.WriteLine($"currentLts={currentLts}");
    }
}

using System;

class Program
{
    static void Main()
    {
        string targetFramework = "net9.0";
        bool currentLts = targetFramework == "net8.0";
        string projectType = targetFramework.StartsWith("net") ? "sdk-style" : "legacy";

        Console.WriteLine($"targetFramework={targetFramework}");
        Console.WriteLine($"projectType={projectType}");
        Console.WriteLine($"currentLts={currentLts}");
    }
}

  1. targetFramework ← net8.0, currentLts ← True, projectType ← sdk-style

    4{5    static void Main()6    {7        string targetFramework→ net8.0 = "net8.0"; //@targetFramework="net6.0", "net9.0"8        bool currentLts→ True = targetFrameworknet8.0 == "net8.0";9        string projectType→ sdk-style = targetFrameworknet8.0.StartsWith("net") ? "sdk-style" : "legacy";1011        Console.WriteLine($"targetFramework={targetFrameworknet8.0}");12        Console.WriteLine($"projectType={projectTypesdk-style}");13        Console.WriteLine($"currentLts={currentLtsTrue}");14    }
    outputtargetFramework=net8.0
projectType=sdk-style
currentLts=True

  1. targetFramework ← net6.0, currentLts ← False, projectType ← sdk-style

    4{5    static void Main()6    {7        string targetFramework→ net6.0 = "net6.0";8        bool currentLts→ False = targetFrameworknet6.0 == "net8.0";9        string projectType→ sdk-style = targetFrameworknet6.0.StartsWith("net") ? "sdk-style" : "legacy";1011        Console.WriteLine($"targetFramework={targetFrameworknet6.0}");12        Console.WriteLine($"projectType={projectTypesdk-style}");13        Console.WriteLine($"currentLts={currentLtsFalse}");14    }
    outputtargetFramework=net6.0
projectType=sdk-style
currentLts=False

  1. targetFramework ← net9.0, currentLts ← False, projectType ← sdk-style

    4{5    static void Main()6    {7        string targetFramework→ net9.0 = "net9.0";8        bool currentLts→ False = targetFrameworknet9.0 == "net8.0";9        string projectType→ sdk-style = targetFrameworknet9.0.StartsWith("net") ? "sdk-style" : "legacy";1011        Console.WriteLine($"targetFramework={targetFrameworknet9.0}");12        Console.WriteLine($"projectType={projectTypesdk-style}");13        Console.WriteLine($"currentLts={currentLtsFalse}");14    }
    outputtargetFramework=net9.0
projectType=sdk-style
currentLts=False