c# - 如何确定给定 .NET 程序集使用的子系统？

Question

在 C# 应用程序中，我想确定另一个 .NET 应用程序是否是控制台应用程序。

这可以使用反射 API 来完成吗？

编辑:好吧，看起来我不会得到这个问题的好答案，因为它看起来不像框架公开了我想要的功能。我仔细研究了 PE/COFF 规范并得出了这个结论:

/// <summary>
/// Parses the PE header and determines whether the given assembly is a console application.
/// </summary>
/// <param name="assemblyPath">The path of the assembly to check.</param>
/// <returns>True if the given assembly is a console application; false otherwise.</returns>
/// <remarks>The magic numbers in this method are extracted from the PE/COFF file
/// format specification available from http://www.microsoft.com/whdc/system/platform/firmware/pecoff.mspx
/// </remarks>
bool AssemblyUsesConsoleSubsystem(string assemblyPath)
{
    using (var s = new FileStream(assemblyPath, FileMode.Open, FileAccess.Read))
    {
        var rawPeSignatureOffset = new byte[4];
        s.Seek(0x3c, SeekOrigin.Begin);
        s.Read(rawPeSignatureOffset, 0, 4);
        int peSignatureOffset = rawPeSignatureOffset[0];
        peSignatureOffset |= rawPeSignatureOffset[1] << 8;
        peSignatureOffset |= rawPeSignatureOffset[2] << 16;
        peSignatureOffset |= rawPeSignatureOffset[3] << 24;
        var coffHeader = new byte[24];
        s.Seek(peSignatureOffset, SeekOrigin.Begin);
        s.Read(coffHeader, 0, 24);
        byte[] signature = {(byte)'P', (byte)'E', (byte)'\0', (byte)'\0'};
        for (int index = 0; index < 4; index++)
        {
            Assert.That(coffHeader[index], Is.EqualTo(signature[index]),
                "Attempted to check a non PE file for the console subsystem!");
        }
        var subsystemBytes = new byte[2];
        s.Seek(68, SeekOrigin.Current);
        s.Read(subsystemBytes, 0, 2);
        int subSystem = subsystemBytes[0] | subsystemBytes[1] << 8;
        return subSystem == 3; /*IMAGE_SUBSYSTEM_WINDOWS_CUI*/
    }
}

Answer 1

这超出了托管代码的范围。从 .NET 的角度来看，控制台和 Windows UI 应用程序是相同的。您必须查看 PE 文件头。在此页面上搜索“子系统”一词 http://msdn.microsoft.com/en-us/magazine/bb985997.aspx