blocks|key|275779|text|只需启动一个PowerShell提示符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|275780|++[Reflection.Assembly]::LoadFile("Name+of+your+dll")
++[Your.NameSpace.And.TypeName]::YourMethod()|code-block|syntax|javascript|275781|我知道你想从C#那里得到这个|275782|使用程序集限定名创建类型：|275783|+var+t+=+Type.GetType("NameSpace.Type,Name+Of+Dll");
+var+m+=+t.GetMethod("NameOfMethod");
+m.Invoke(null,+new+object[]+{+params+});|275784|这应该可以让你开始学习了。|275785|我不太清楚您所说的“在新进程中”是什么意思，但是将其封装到.exe/.ps1文件中并不难，这样您就可以在命令行中使用一些选项开始。|275786|因此，您不必为要调用每个.exe创建新的DLL。|275787|但是如果你想启动一个新的进程，你应该启动一个新的进程，这通常通过启动一个新的.EXE来完成。|275788|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

Just start a PowerShell prompt.

<pre><code> [Reflection.Assembly]::LoadFile("Name of your dll")
 [Your.NameSpace.And.TypeName]::YourMethod()
</code></pre>

I see you want this from C#

Create the Type using the Assembly Qualified name:

<pre><code> var t = Type.GetType("NameSpace.Type,Name Of Dll");
 var m = t.GetMethod("NameOfMethod");
 m.Invoke(null, new object[] { params });
</code></pre>

This should get you started.

I don't exactly know what you mean by "In a new process", but it should not be to difficult to wrap this into a .exe/.ps1 that you can start with some option on the commandline. 

So you do not have to create a new .exe for every DLL you want to invoke. 

But if you want to start a new process, you should start a new process, this is typically done by starting a new .EXE.

blocks|key|277747|text|查看windows附带的rundll32.exe程序。如果您知道有关dll的某些信息，则有时可以使用此程序运行该dll中的代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|277748|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Look into the the rundll32.exe program that ships with windows. If you know certain information about the dll, you can sometimes use this program to run code in that dll.

blocks|key|3198678|text|.NET程序集可以是loaded+in+PowerShell。(好的，PowerShell是一个可执行文件，但不是专门用于运行任何特定程序集中的代码)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3198679|entityMap|0|LINK|mutability|MUTABLE|url|http://www.dougfinke.com/blog/index.php/2010/08/29/how-to-load-net-assemblies-in-a-powershell-session/^0|A|K|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

A .NET Assembly can be <a href="http://www.dougfinke.com/blog/index.php/2010/08/29/how-to-load-net-assemblies-in-a-powershell-session/" rel="nofollow">loaded in PowerShell</a>. (Well, PowerShell is an EXE, but not specialized for running code from any particular assembly)

blocks|key|279524|text|选项1：.NET+InstallUtil+(正常.NET安装的一部分)|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|279525|添加对System.Configuration.Install的引用，然后将类似以下内容放入程序集中：|CODE|279526|[System.ComponentModel.RunInstaller(true)]
public+class+Sample+:+System.Configuration.Install.Installer
{
++++public+override+void+Uninstall(System.Collections.IDictionary+savedState)
++++{
++++++++base.Uninstall(savedState);

++++++++this.Context.LogMessage("This+can+be+in+a+.dll.");
++++++++//+Do+your+thing...
++++}
}|code-block|syntax|javascript|279527|然后滥用.NET+InstallUtil：|279528|%25windir%25\Microsoft.NET\Framework\v2.0.50727\installutil+/logtoconsole=false+/logfile=+/u+[your+assembly+.dll+here]|279529|这可能有点混乱，特别是没有所有命令行参数禁用日志记录。|279530|选项2:使用原生rundll32来反转P/调用静态类方法|279531|2016编辑:+Now+a+Nuget+package：UnmanagedExports+(src)！|279532|Unknown+MSIL+directives+(msdn论坛，2007)链接到IL汇编语言程序员参考(10/3/2000，pg.74)的beta+1版本，该版本声明：|279533|279534|如果指定了fromunmanaged，运行库将自动生成一个thunk，该thunk将非托管方法调用转换为托管调用，调用该方法，并将结果返回到非托管环境。|blockquote|279535|279536|279537|在和微软内部有更多的细节。NET+IL汇编程序。(最佳搜索关键词:+ilasm+vtentry)。|279538|相关阅读：|279539|Unmanaged+Exports:+Cannot+compile+assembly+(堆栈溢出，2010)|279540|Unmanaged+Exports+/+RGiesecke.DllExport.dll+(堆栈溢出，2010)|279541|Create+a+C#+DLL+That+Can+Be+Imported+in+a+Delphi+App+Using+stdcall+(堆栈溢出，2009)|279542|C#+Project+Template+for+Unmanaged+Exports+(Robert+Giesecke，2010)+-+msbuild，vs2010集成|279543|IKVM.Reflection+Update:+export+static+managed+methods+as+unmanaged+DLL+exports+(单声道，2011)|279544|Simple+Method+of+DLL+Export+without+C%2B%2B/CLI+(代码项目，2009)+--不支持64位吗？|279545|How+to+Automate+Exporting+.NET+Function+to+Unmanaged+Programs+(codeproject，2006)+-支持64位|279546|Has+anything+been+added+to+.Net+4.0+to+support+"Reverse+P/Invoke"+scenarios?+(msdn论坛，2010)+-代码列表|279547|Unmanaged+code+can+wrap+managed+methods+(codeproject，2004)|279548|潜在的缺点：|279549|Gotchas+with+Reverse+Pinvoke+(unmanaged+to+managed+code+callbacks)+(msdn博客，2006)|279550|Reverse+P/Invoke+and+exception+(msdn博客，2008)|279551|entityMap|0|LINK|mutability|MUTABLE|url|https://www.nuget.org/packages/UnmanagedExports|1|https://github.com/3F/DllExport|2|http://social.msdn.microsoft.com/Forums/en-US/clr/thread/b95626a6-7a81-49d0-a070-20d923c5a038|3|https://stackoverflow.com/questions/2043214/unmanaged-exports-cannot-compile-assembly/2043331#2043331|4|https://stackoverflow.com/questions/2194708/unmanaged-exports-robert-giesecke/5301369#5301369|5|https://stackoverflow.com/questions/1063151/create-a-c-dll-that-can-be-imported-in-a-delphi-app-using-stdcall-possible/1063424#1063424|6|http://sites.google.com/site/robertgiesecke/|7|https://stackoverflow.com/users/35443/robert-giesecke|8|http://weblog.ikvm.net/PermaLink.aspx?guid=aeaa0190-2b32-45e6-a249-3c3cf126372b|9|http://www.codeproject.com/KB/dotnet/DllExporter.aspx|10|http://www.codeproject.com/KB/dotnet/DllExport.aspx|11|http://social.msdn.microsoft.com/Forums/en-US/clr/thread/8648ff5e-c599-42e4-b873-6b91205a5c93/|12|http://www.codeproject.com/KB/dotnet/emilio_managed_unmanaged.aspx|13|http://blogs.msdn.com/b/davidnotario/archive/2006/01/13/512436.aspx|14|http://blogs.msdn.com/b/junfeng/archive/2008/01/28/reverse-p-invoke-and-exception.aspx^0|0|Z|0|3|S|0|0|0|0|0|0|S|0|S|G|0|1A|3|1|0|0|N|2|0|0|0|0|0|0|0|0|16|3|0|0|17|4|0|0|1U|5|0|0|15|6|17|F|7|0|0|26|8|0|0|17|9|0|0|1P|A|0|0|24|B|0|0|13|C|0|0|0|1U|D|0|0|U|E|0^^$0|@$1|2|3|4|5|6|7|2X|8|@$9|2Y|A|2Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|30|8|@$9|31|A|32|B|H]]|D|@]|E|$]]|$1|I|3|J|5|K|7|33|8|@]|D|@]|E|$L|M]]|$1|N|3|O|5|6|7|34|8|@]|D|@]|E|$]]|$1|P|3|Q|5|K|7|35|8|@]|D|@]|E|$L|M]]|$1|R|3|S|5|6|7|36|8|@]|D|@]|E|$]]|$1|T|3|U|5|6|7|37|8|@$9|38|A|39|B|C]]|D|@]|E|$]]|$1|V|3|W|5|6|7|3A|8|@]|D|@$9|3B|A|3C|1|3D]|$9|3E|A|3F|1|3G]]|E|$]]|$1|X|3|Y|5|6|7|3H|8|@]|D|@$9|3I|A|3J|1|3K]]|E|$]]|$1|Z|3|-4|5|6|7|3L|8|@]|D|@]|E|$]]|$1|10|3|11|5|12|7|3M|8|@]|D|@]|E|$]]|$1|13|3|-4|5|6|7|3N|8|@]|D|@]|E|$]]|$1|14|3|-4|5|6|7|3O|8|@]|D|@]|E|$]]|$1|15|3|16|5|6|7|3P|8|@]|D|@]|E|$]]|$1|17|3|18|5|6|7|3Q|8|@]|D|@]|E|$]]|$1|19|3|1A|5|6|7|3R|8|@]|D|@$9|3S|A|3T|1|3U]]|E|$]]|$1|1B|3|1C|5|6|7|3V|8|@]|D|@$9|3W|A|3X|1|3Y]]|E|$]]|$1|1D|3|1E|5|6|7|3Z|8|@]|D|@$9|40|A|41|1|42]]|E|$]]|$1|1F|3|1G|5|6|7|43|8|@]|D|@$9|44|A|45|1|46]|$9|47|A|48|1|49]]|E|$]]|$1|1H|3|1I|5|6|7|4A|8|@]|D|@$9|4B|A|4C|1|4D]]|E|$]]|$1|1J|3|1K|5|6|7|4E|8|@]|D|@$9|4F|A|4G|1|4H]]|E|$]]|$1|1L|3|1M|5|6|7|4I|8|@]|D|@$9|4J|A|4K|1|4L]]|E|$]]|$1|1N|3|1O|5|6|7|4M|8|@]|D|@$9|4N|A|4O|1|4P]]|E|$]]|$1|1P|3|1Q|5|6|7|4Q|8|@]|D|@$9|4R|A|4S|1|4T]]|E|$]]|$1|1R|3|1S|5|6|7|4U|8|@]|D|@]|E|$]]|$1|1T|3|1U|5|6|7|4V|8|@]|D|@$9|4W|A|4X|1|4Y]]|E|$]]|$1|1V|3|1W|5|6|7|4Z|8|@]|D|@$9|50|A|51|1|52]]|E|$]]|$1|1X|3|-4|5|6|7|53|8|@]|D|@]|E|$]]]|1Y|$1Z|$5|20|21|22|E|$23|24]]|25|$5|20|21|22|E|$23|26]]|27|$5|20|21|22|E|$23|28]]|29|$5|20|21|22|E|$23|2A]]|2B|$5|20|21|22|E|$23|2C]]|2D|$5|20|21|22|E|$23|2E]]|2F|$5|20|21|22|E|$23|2G]]|2H|$5|20|21|22|E|$23|2I]]|2J|$5|20|21|22|E|$23|2K]]|2L|$5|20|21|22|E|$23|2M]]|2N|$5|20|21|22|E|$23|2O]]|2P|$5|20|21|22|E|$23|2Q]]|2R|$5|20|21|22|E|$23|2S]]|2T|$5|20|21|22|E|$23|2U]]|2V|$5|20|21|22|E|$23|2W]]]]

Option 1: .NET InstallUtil (part of the normal .NET install)

Add a reference to <code>System.Configuration.Install</code> then drop something like this in your assembly:

<pre><code>[System.ComponentModel.RunInstaller(true)]
public class Sample : System.Configuration.Install.Installer
{
 public override void Uninstall(System.Collections.IDictionary savedState)
 {
 base.Uninstall(savedState);

 this.Context.LogMessage("This can be in a .dll.");
 // Do your thing...
 }
}
</code></pre>

Then abuse the .NET InstallUtil:

<pre><code>%windir%\Microsoft.NET\Framework\v2.0.50727\installutil /logtoconsole=false /logfile= /u [your assembly .dll here]
</code></pre>

It may be a bit messy, especially without all the command line parameters disabling logging.

Option 2: use native rundll32 to inverse P/Invoke a static class method

2016 Edit: Now a Nuget package: <a href="https://www.nuget.org/packages/UnmanagedExports" rel="nofollow noreferrer">UnmanagedExports</a> (<a href="https://github.com/3F/DllExport" rel="nofollow noreferrer">src</a>)! 

<a href="http://social.msdn.microsoft.com/Forums/en-US/clr/thread/b95626a6-7a81-49d0-a070-20d923c5a038" rel="nofollow noreferrer">Unknown MSIL directives</a> (msdn forum, 2007) links to a beta 1 release of the IL Assembly Language Programmer's Reference (10/3/2000, pg.74) which states:

<blockquote>
 If fromunmanaged is specified, the
 runtime will automatically generate a
 thunk that will convert the unmanaged
 method call to a managed call, call
 the method, and return the result to
 the unmanaged environment.
</blockquote>

There is more detail in <a href="http://books.google.com/books?id=oAcCRKd6EZgC&amp;lpg=PA385&amp;ots=KAPa4LrZ9q&amp;dq=Expert%20.NET%202.0%20IL%20Assembler%20vtentry&amp;pg=PA380#v=onepage&amp;q&amp;f=false" rel="nofollow noreferrer">Expert .NET 2.0 IL assembler</a> and Inside Microsoft. NET IL Assembler. (Best search keywords: ilasm vtentry).

Related reading:

<a href="https://stackoverflow.com/questions/2043214/unmanaged-exports-cannot-compile-assembly/2043331#2043331">Unmanaged Exports: Cannot compile assembly</a> (stackoverflow, 2010)

<a href="https://stackoverflow.com/questions/2194708/unmanaged-exports-robert-giesecke/5301369#5301369">Unmanaged Exports / RGiesecke.DllExport.dll</a> (stackoverflow, 2010)

<a href="https://stackoverflow.com/questions/1063151/create-a-c-dll-that-can-be-imported-in-a-delphi-app-using-stdcall-possible/1063424#1063424">Create a C# DLL That Can Be Imported in a Delphi App Using stdcall</a> (stackoverflow, 2009)

<a href="http://sites.google.com/site/robertgiesecke/" rel="nofollow noreferrer">C# Project Template for Unmanaged Exports</a> (<a href="https://stackoverflow.com/users/35443/robert-giesecke">Robert Giesecke</a>, 2010) - msbuild, vs2010 integration

<a href="http://weblog.ikvm.net/PermaLink.aspx?guid=aeaa0190-2b32-45e6-a249-3c3cf126372b" rel="nofollow noreferrer">IKVM.Reflection Update: export static managed methods as unmanaged DLL exports</a> (mono, 2011)

<a href="http://www.codeproject.com/KB/dotnet/DllExporter.aspx" rel="nofollow noreferrer">Simple Method of DLL Export without C++/CLI</a> (codeproject, 2009) - no 64-bit support?

<a href="http://www.codeproject.com/KB/dotnet/DllExport.aspx" rel="nofollow noreferrer">How to Automate Exporting .NET Function to Unmanaged Programs</a> (codeproject, 2006) - supports 64-bit

<a href="http://social.msdn.microsoft.com/Forums/en-US/clr/thread/8648ff5e-c599-42e4-b873-6b91205a5c93/" rel="nofollow noreferrer">Has anything been added to .Net 4.0 to support "Reverse P/Invoke" scenarios?</a> (msdn forum, 2010) - code listing

<a href="http://www.codeproject.com/KB/dotnet/emilio_managed_unmanaged.aspx" rel="nofollow noreferrer">Unmanaged code can wrap managed methods</a> (codeproject, 2004)

Potential drawbacks:

<a href="http://blogs.msdn.com/b/davidnotario/archive/2006/01/13/512436.aspx" rel="nofollow noreferrer">Gotchas with Reverse Pinvoke (unmanaged to managed code callbacks)</a> (msdn blog, 2006)

<a href="http://blogs.msdn.com/b/junfeng/archive/2008/01/28/reverse-p-invoke-and-exception.aspx" rel="nofollow noreferrer">Reverse P/Invoke and exception</a> (msdn blog, 2008)

blocks|key|2985352|text|您可以使用rundll32.exe+dll_name,method_name启动进程和运行dll函数。在C#中，您可以执行以下操作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2985353|myProcess+=+new+Process+{StartInfo+=+{FileName+=+"rundll32.exe",+Arguments+=+"my_dll_name.dll,my_function_name"}};
myProcess.Start();|code-block|syntax|javascript|2985354|只需确保DLL位于您的路径中。如果您正在考虑运行某种类型的单元测试，请确保终止TearDown+/+CleanUp方法上的进程：myProcess.Kill()，否则DLL可能会保持加载状态，并且您将无法在开发过程中覆盖它。您还应该查看DLL中的命令行应用程序，该应用程序将杀死持有您的this+article的所有进程，并将其添加到预构建事件中：freelib.exe+my_dll_name.dll|2985355|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/Articles/10531/Find-and-kill-a-process-which-uses-the-specified-l^0|5|X|0|0|1S|G|4U|R|3Z|C|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

You can launch a process and run a dll function by using <code>rundll32.exe dll_name,method_name</code>. In C# you can do something like this:

<pre><code>myProcess = new Process {StartInfo = {FileName = "rundll32.exe", Arguments = "my_dll_name.dll,my_function_name"}};
myProcess.Start();
</code></pre>

Just make sure the DLL is in your PATH. If you are thinking about running unit testing of some kind, make sure you kill the process on the TearDown / CleanUp method: <code>myProcess.Kill()</code>, otherwise the DLL may remain loaded and you won't be able to overwrite it as part of your development process. You should also look into <a href="http://www.codeproject.com/Articles/10531/Find-and-kill-a-process-which-uses-the-specified-l" rel="nofollow">this article</a> for a command line application that will kill all processes holding your DLL and add it to your Pre-Build events: <code>freelib.exe my_dll_name.dll</code>

I'm curious if there's a way to execute a static .DLL method in a new process without having to create an .EXE for it?

AFAIK, this isn't possible with native Win32/64 DLLs. How about .NET DLL assemblies?

UPDATE: I forgot to mention I'm primarily interested in doing this programmatically (from C# code, to be specific).

Thanks!

CONCLUSION: Although no one "dared" to spell it out, the answers all seem to lean towards 'no'. One needs to start a process through one of the conventional ways (EXE, PowerShell, etc.) then convince that process to load the DLL and execute the code within. I guess I was falsely hoping that managed DLLs are capable of more.

Thanks again to everyone who chimed in!

Is it possible to execute a .NET dll without an exe to load it?

单元测试

我很好奇，是否有一种方法可以在新流程中执行静态.DLL方法，而不必为其创建.EXE？AFAIK，这对于本机Win32/64 DLL是不可能的。.NET动态链接库程序集怎么样？UPDATE：我忘了提一下，我主要对以编程方式(具体地说是通过C#代码)完成这项工作感兴趣。谢谢!结论：虽然没有人“敢”说出来，但答案似乎都倾向于...

问有没有可能在没有可执行文件的情况下执行.NET动态链接库？
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