从C＃调用dll方法 [英] Calling dll method from C#

问题描述

你好，我在c＃上有这个方法。

哪种方法可以调用它？

 [System.Runtime.InteropServices.DllImportAttribute（  QCamDriver.dll,CallingConvention=CallingConvention.StdCall,EntryPoint =   QCam_ListCameras）] 
 < span class =code-keyword> public   static   extern  QCam_Err QCam_ListCameras（ ref  QCam_CamListItem pList， ref   uint  pNumberInList）; 

解决方案

如果您正在调用托管代码，那么

 Assembly SampleAssembly = Assembly.LoadFrom（filename）; 
输入myType = SampleAssembly.GetTypes（）[0]; 
 MethodInfo Method = myType.GetMethod（myVoid）; 
 object myInstance = Activator.CreateInstance（myType）; 
 Method.Invoke（myInstance，null）; 

如果你打电话给非托管代码那么



从C＃中用C编译的Dll调用方法 [ ^ ]

Hello, I have this method at c#.
Which is the right way to call it?

[System.Runtime.InteropServices.DllImportAttribute("QCamDriver.dll",CallingConvention=CallingConvention.StdCall,EntryPoint = "QCam_ListCameras")]
            public static extern QCam_Err QCam_ListCameras(ref QCam_CamListItem pList, ref uint pNumberInList);

解决方案

if you are calling the managed code then

 Assembly SampleAssembly = Assembly.LoadFrom(filename);
Type myType = SampleAssembly.GetTypes()[0];
MethodInfo Method = myType.GetMethod("myVoid");
object myInstance = Activator.CreateInstance(myType);
Method.Invoke(myInstance, null); 

and if you are calling unmanaged code then

Calling methods from Dll compiled in ''C'' from C#[^]

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