Question

我有两个不同的项目，都使用NuGet的Newtonsoft.Json。

项目A使用版本9.0.1。
项目B使用版本11.0.1。

在构建项目时，一个dll会覆盖另一个dll，因为它们都被编译在同一个文件夹中。

如何将dll的编译重定向到单独的文件中，又如何说Project A使用9.0.1，Project B使用11.0.1？

最好有一个文件夹“ Newtonsoft”，并且有2个文件夹“ 11”和“ 9”。在这些文件夹中是特定版本。（如果还有其他解决方案，那么我也可以与其他解决方案配合使用。）

项目A和项目B都是“插件”，我的应用程序正在使用它们，其中包括来自Plug-Folder的那些插件。这意味着我当前有一个使用以下dll的应用程序（它们是全部放在一个文件夹中）：

Project_A.dll
Project_B.dll
NewtonSoft.Json.dll（9.0.1或11.0.1）

ProjectA.dll

这是我的app.config

项目A：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="11.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="YamlDotNet" publicKeyToken="ec19458f3c15af5e" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

项目B：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="11.0.0.0" />
        <codeBase version="11.0.0.1" href="Newtonsoft.Json.dll" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" /></startup></configuration>

Answer 1

您可以将程序集放置在其他文件夹中（不一定直接在bin文件夹中），并使用codeBase元素：

<configuration>
<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
            <assemblyIdentity name="Some.API" publicKeyToken="12ab3cd4e5f6abcd"
              culture="neutral" />
            <codeBase version="1.0.0.0" href="v1\Some.API.dll" />
            <codeBase version="2.0.0.0" href="v2\Some.API.dll" />
            <!-- INFO: The version attribute represents an assembly 
                       version which doesn't always have to match the 
                       NuGet package version.
                       The codebase attribute can be anywhere on 
                       the local intranet or the Internet. -->
        </dependentAssembly>
    </assemblyBinding>
</runtime>

来源：https://devnet.kentico.com/articles/referencing-multiple-versions-of-the-same-assembly-in-a-single-application

Answer 2

已解决

通过执行以下操作使其正常工作：

在使用Newtonsfot.Json的任何方法/类之前，我使用以下两行：

//The AssemblyResolve event is called when the common language runtime tries to bind to the assembly and fails.
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.AssemblyResolve += new ResolveEventHandler(currentDomain_AssemblyResolve);

如果应用程序抛出异常，将始终调用该事件

无法加载文件或程序集'Newtonsoft.Json，Version = 9.0.0.1，文化=中性，PublicKeyToken = 30ad4fe6b2a6aeed”或其中之一依赖性。系统找不到指定的文件。

事件因此捕获了事件并加载了正确的dll：

Assembly currentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
    //This handler is called only when the common language runtime tries to bind to the assembly and fails.

    //Retrieve the list of referenced assemblies in an array of AssemblyName.
    Assembly MyAssembly, objExecutingAssemblies;
    string strTempAssmbPath = "";

    objExecutingAssemblies = Assembly.GetExecutingAssembly();
    AssemblyName[] arrReferencedAssmbNames = objExecutingAssemblies.GetReferencedAssemblies();

    //Loop through the array of referenced assembly names.
    foreach (AssemblyName strAssmbName in arrReferencedAssmbNames)
    {
        //Check for the assembly names that have raised the "AssemblyResolve" event.
        if (strAssmbName.FullName.Substring(0, strAssmbName.FullName.IndexOf(",")) == args.Name.Substring(0, args.Name.IndexOf(",")))
        {
            //Build the path of the assembly from where it has to be loaded.
            //The following line is probably the only line of code in this method you may need to modify:
            strTempAssmbPath = "C:\\Program Files\\PATH TO YOUR FOLDER" + "\\Newtonsoft.Json\\9.0.1";
            if (!strTempAssmbPath.EndsWith("\\")) strTempAssmbPath += "\\";
            //strTempAssmbPath += args.Name.Substring(0, args.Name.IndexOf(",")) + ".dll";
            strTempAssmbPath += strAssmbName.Name + ".dll";
            break;
        }

    }
    //Load the assembly from the specified path.
    MyAssembly = Assembly.LoadFrom(strTempAssmbPath);

    //Return the loaded assembly.
    return MyAssembly;
}

积分：https://www.chilkatsoft.com/p/p_502.asp

相同的DLL两个不同版本

2 个答案: