为什么 dll 改名字之后无法使用

有人直接把dll名字改了，我的程序运行出错，说这是我程序的问题，难道真是这样吗？ 总感觉直接改dll名字不对，但哪儿不对呢，带着这样的疑惑研究了一下，重新做了一下试验，结果程序抛出了错误：

Could not load file or assembly 'AssemblyName' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

错误中提到了Assembly manifest 文件，那这个文件有接触，但是具体没有深入研究，到了微软官网查了一下关于mainifest的信息，

Each assembly's manifest performs the following functions:

• Enumerates the files that make up the assembly.
• Governs how references to the assembly's types and resources map to the files that contain their declarations and implementations.
• Enumerates other assemblies on which the assembly depends.
• Provides a level of indirection between consumers of the assembly and the assembly's implementation details.
• Renders the assembly self-describing.

Assembly Manifest Contents

The following table shows the information contained in the assembly manifest. The first four items — the assembly name, version number, culture, and strong name information — make up the assembly's identity.

Information	Description
Assembly name	A text string specifying the assembly's name.
Version number	A major and minor version number, and a revision and build number. The common language runtime uses these numbers to enforce version policy.
Culture	Information on the culture or language the assembly supports. This information should be used only to designate an assembly as a satellite assembly containing culture- or language-specific information. (An assembly with culture information is automatically assumed to be a satellite assembly.)
Strong name information	The public key from the publisher if the assembly has been given a strong name.
List of all files in the assembly	A hash of each file contained in the assembly and a file name. Note that all files that make up the assembly must be in the same directory as the file containing the assembly manifest.
Type reference information	Information used by the runtime to map a type reference to the file that contains its declaration and implementation. This is used for types that are exported from the assembly.
Information on referenced assemblies	A list of other assemblies that are statically referenced by the assembly. Each reference includes the dependent assembly's name, assembly metadata (version, culture, operating system, and so on), and public key, if the assembly is strong named.

上面红色文字部分说明manifest对assembly自身的信息进行了记录，从提示信息看可以推断出Assembly.Load(string assemblyName)是检测了dll 名字[具体代码保密无法看到]，那就只能记住assembly不能随便改名字。