为什么 Reflection.Assembly LoadFile 不加载所有 DLL？

发布于 2024-09-10 16:12:09 字数 1462 浏览 2 评论 0原文

我正在使用 LoadFrom() 来加载 dll，但由于某种原因，此加载函数不适用于所有 dll，我想加载 3000 个 dll，以便从每个 dll 中获取版权属性。

我的代码：

    class ReverseDLL
{
    private Assembly assembly;
    private AssemblyDescriptionAttribute desc;
    private AssemblyTitleAttribute title;
    private AssemblyCopyrightAttribute copyRight;

    public string getCopyright(string path)
    {
        try
        {
            //assembly = System.Reflection.Assembly.Load(System.IO.File.ReadAllBytes(path));
            assembly = System.Reflection.Assembly.LoadFrom(path);//"C:\\Windows\\winsxs\\x86_microsoft.vc90.debugcrt_1fc8b3b9a1e18e3b_9.0.30729.1_none_bb1f6aa1308c35eb\\msvcm90d.dll");//path);// LoadFrom(path);

                desc = (AssemblyDescriptionAttribute)
                AssemblyDescriptionAttribute.GetCustomAttribute(
                assembly, typeof(AssemblyDescriptionAttribute));

                title = (AssemblyTitleAttribute)
                AssemblyTitleAttribute.GetCustomAttribute(
                assembly, typeof(AssemblyTitleAttribute));

                copyRight = (AssemblyCopyrightAttribute)AssemblyCopyrightAttribute.GetCustomAttribute(assembly, typeof(AssemblyCopyrightAttribute));
        }
        catch
        {
              this.copyRight = new AssemblyCopyrightAttribute("");
        }

        if (this.copyRight == null)
            this.copyRight = new AssemblyCopyrightAttribute("");

        return copyRight.Copyright;
    }
}

原文

I am using LoadFrom(), to load dlls, but for some reason this load function doesn't work on all dlls,
i want to load 3000 dlls to get from each one the copyright attribute.

my code :

    class ReverseDLL
{
    private Assembly assembly;
    private AssemblyDescriptionAttribute desc;
    private AssemblyTitleAttribute title;
    private AssemblyCopyrightAttribute copyRight;

    public string getCopyright(string path)
    {
        try
        {
            //assembly = System.Reflection.Assembly.Load(System.IO.File.ReadAllBytes(path));
            assembly = System.Reflection.Assembly.LoadFrom(path);//"C:\\Windows\\winsxs\\x86_microsoft.vc90.debugcrt_1fc8b3b9a1e18e3b_9.0.30729.1_none_bb1f6aa1308c35eb\\msvcm90d.dll");//path);// LoadFrom(path);

                desc = (AssemblyDescriptionAttribute)
                AssemblyDescriptionAttribute.GetCustomAttribute(
                assembly, typeof(AssemblyDescriptionAttribute));

                title = (AssemblyTitleAttribute)
                AssemblyTitleAttribute.GetCustomAttribute(
                assembly, typeof(AssemblyTitleAttribute));

                copyRight = (AssemblyCopyrightAttribute)AssemblyCopyrightAttribute.GetCustomAttribute(assembly, typeof(AssemblyCopyrightAttribute));
        }
        catch
        {
              this.copyRight = new AssemblyCopyrightAttribute("");
        }

        if (this.copyRight == null)
            this.copyRight = new AssemblyCopyrightAttribute("");

        return copyRight.Copyright;
    }
}

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巾帼英雄 2024-09-17 16:12:09

如果您不提供更多信息（例如错误），我不知道反射问题，但是您也可以尝试访问文件本身：

string copyright = FileVersionInfo.GetVersionInfo(path).LegalCopyright;

这会访问文件系统元数据（就像您一样）会在资源管理器中看到），并且具有适用于托管和非托管 dll 的优点；但是它要求元数据存在（它不查看属性）。

编辑：快速检查表明（如预期）编译器确实检查此属性并正确填充文件元数据。

I don't know about the reflection problem without you providing more info (such as the error), but you could also try access the file itself:

string copyright = FileVersionInfo.GetVersionInfo(path).LegalCopyright;

This accesses the file-system meta-data (like you would see in explorer), and has the advantage of working for both managed and unmanaged dlls; but it requires that meta-data to exist (it doesn't look at the attribute).

Edit: a quick check indicates that (as expected) the compiler does check for this attribute and populate the file meta-data correctly.

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