我如何在c＃中使用c ++ dll

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我喜欢在我的c＃应用程序中导入c ++ dll我该怎么办？我需要使用什么概念？

解决方案>

假设这个使用MinGW编译的DLL。 在C-sharp你可以遵循这个代码：

使用System.Runtime.InteropServices; 使用系统; class call_dll { [StructLayout（LayoutKind.Sequential，Pack = 1）] private struct STRUCT_DLL { public Int32 count_int; public IntPtr ints; } [DllImport（mingw_dll.dll）] private static extern int func_dll（ int an_int， [MarshalAs（UnmanagedType.LPArray ）] byte [] string_filled_in_dll， ref STRUCT_DLL s ）; public static void Main（）{ byte [] string_filled_in_dll = new byte [21]; STRUCT_DLL struct_dll = new STRUCT_DLL（）; struct_dll.count_int = 5; int [] ia = new int [5]; ia [0] = 2; ia [1] = 3; ia [2] = 5; ia [3] = 8; ia [4] = 13; GCHandle gch = GCHandle.Alloc（ia）; struct_dll.ints = Marshal.UnsafeAddrOfPinnedArrayElement（ia，0）; int ret = func_dll（5，string_filled_in_dll，ref struct_dll）; Console.WriteLine（返回值：+ ret）; Console.WriteLine（String filled in DLL：+ System.Text.Encoding.ASCII.GetString（string_filled_in_dll））; } } $ / pre>

i like import c++ dll in my c# application how can i Do this?, what is concept i need to use for this?

解决方案

suppose this DLL that compile with MinGW. in C-sharp you can follow this code:

using System.Runtime.InteropServices; using System; class call_dll { [StructLayout(LayoutKind.Sequential, Pack=1)] private struct STRUCT_DLL { public Int32 count_int; public IntPtr ints; } [DllImport("mingw_dll.dll")] private static extern int func_dll( int an_int, [MarshalAs(UnmanagedType.LPArray)] byte[] string_filled_in_dll, ref STRUCT_DLL s ); public static void Main() { byte[] string_filled_in_dll = new byte[21]; STRUCT_DLL struct_dll = new STRUCT_DLL(); struct_dll.count_int = 5; int[] ia = new int[5]; ia[0] = 2; ia[1] = 3; ia[2] = 5; ia[3] = 8; ia[4] = 13; GCHandle gch = GCHandle.Alloc(ia); struct_dll.ints = Marshal.UnsafeAddrOfPinnedArrayElement(ia, 0); int ret=func_dll(5,string_filled_in_dll, ref struct_dll); Console.WriteLine("Return Value: " + ret); Console.WriteLine("String filled in DLL: " + System.Text.Encoding.ASCII.GetString(string_filled_in_dll)); } }