本文將介紹C++中通過DLL來調用C#代碼。
首先建立C#的“類庫”工程CShapeDLL。
然後輸入如下代碼：
[csharp]
//C++通過DLL調用C#代碼
//http://blog.csdn.net/morewindows/article/details/8678431
//By MoreWindows( http://blog.csdn.net/MoreWindows )
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace CShapeDLL
{
public class CMyAddClass
{
private int m_nNumber1;
private int m_nNumber2;
public int Number1
{
set { m_nNumber1 = value; }
get { return m_nNumber1; }
}
public int Number2
{
set { m_nNumber2 = value; }
get { return m_nNumber2; }
}
public int AddFunc()
{
return m_nNumber1 + m_nNumber2;
}
}
public class CMyWriteLine
{
private string m_strText;
public string Text
{
set { m_strText = value; }
get { return Text; }
}
public void WriteLineFunc()
{
Console.WriteLine(m_strText);
}
}
}
// By MoreWindows( http://blog.csdn.net/MoreWindows )
//C++通過DLL調用C#代碼
//http://blog.csdn.net/morewindows/article/details/8678431
//By MoreWindows( http://blog.csdn.net/MoreWindows )
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace CShapeDLL
{
public class CMyAddClass
{
private int m_nNumber1;
private int m_nNumber2;
public int Number1
{
set { m_nNumber1 = value; }
get { return m_nNumber1; }
}
public int Number2
{
set { m_nNumber2 = value; }
get { return m_nNumber2; }
}
public int AddFunc()
{
return m_nNumber1 + m_nNumber2;
}
}
public class CMyWriteLine
{
private string m_strText;
public string Text
{
set { m_strText = value; }
get { return Text; }
}
public void WriteLineFunc()
{
Console.WriteLine(m_strText);
}
}
}
// By MoreWindows( http://blog.csdn.net/MoreWindows )這裡有兩個類，一個是MyAddClass類，是用來做加法運算的，另一個是CMyWriteLine，用來輸出文本的。
然後以C++控制台程序為例，C++代碼如下：
[cpp]
//C++通過DLL調用C#代碼
//http://blog.csdn.net/morewindows/article/details/8678431
#using "CShapeDLL\\CShapeDLL\\bin\\Debug\\CShapeDLL.dll"
//#using "CShapeDLL\\CShapeDLL\\bin\\Release\\CShapeDLL.dll"
#include <stdio.h>
#include <conio.h>
using namespace CShapeDLL;
int main()
{
printf(" C++通過DLL調用C#代碼\n");
printf(" - By MoreWindows( http://blog.csdn.net/morewindows/article/details/8678431 ) -\n\n");
CMyWriteLine ^ writeLineClass = gcnew CMyWriteLine;
writeLineClass->Text = "使用C# 的CMyWriteLine示范";
writeLineClass->WriteLineFunc();
writeLineClass->Text = "By MoreWindows (http://blog.csdn.com/MoreWindows)";
writeLineClass->WriteLineFunc();
writeLineClass->Text = "http://blog.csdn.net/morewindows/article/details/8678431";
writeLineClass->WriteLineFunc();
printf("\n ---------------------------------- \n");
CMyAddClass ^ addClass = gcnew CMyAddClass;
addClass->Number1 = 3;
addClass->Number2 = 5;
printf("使用C# 的CMyAddClass示范\n");
printf("%d + %d = %d\n", addClass->Number1, addClass->Number2, addClass->AddFunc());
getch();
return 0;
}
//By MoreWindows( http://blog.csdn.net/MoreWindows )
//C++通過DLL調用C#代碼
//http://blog.csdn.net/morewindows/article/details/8678431
#using "CShapeDLL\\CShapeDLL\\bin\\Debug\\CShapeDLL.dll"
//#using "CShapeDLL\\CShapeDLL\\bin\\Release\\CShapeDLL.dll"
#include <stdio.h>
#include <conio.h>
using namespace CShapeDLL;
int main()
{
printf(" C++通過DLL調用C#代碼\n");
printf(" - By MoreWindows( http://blog.csdn.net/morewindows/article/details/8678431 ) -\n\n");
CMyWriteLine ^ writeLineClass = gcnew CMyWriteLine;
writeLineClass->Text = "使用C# 的CMyWriteLine示范";
writeLineClass->WriteLineFunc();
writeLineClass->Text = "By MoreWindows (http://blog.csdn.com/MoreWindows)";
writeLineClass->WriteLineFunc();
writeLineClass->Text = "http://blog.csdn.net/morewindows/article/details/8678431";
writeLineClass->WriteLineFunc();
printf("\n ---------------------------------- \n");
CMyAddClass ^ addClass = gcnew CMyAddClass;
addClass->Number1 = 3;
addClass->Number2 = 5;
printf("使用C# 的CMyAddClass示范\n");
printf("%d + %d = %d\n", addClass->Number1, addClass->Number2, addClass->AddFunc());
getch();
return 0;
}
//By MoreWindows( http://blog.csdn.net/MoreWindows )
編譯，出錯。提示如下：
fatal error C1190: 托管目標代碼需要“/clr”選項
好吧，修改下，在“屬性”->“配置屬性”->“常規”->“公共語言運行庫支持”中選取“公共語言運行庫支持(/clr)”。如下圖所示
再編譯，又出錯！提示如下：
1>正在編譯...
1>cl: 命令行error D8016 :“/MTd”和“/clr”命令行選項不兼容
1>項目: error PRJ0002 : 錯誤的結果2 (從“e:\Program Files\Microsoft Visual Studio 9.0\VC\bin\cl.exe”返回)。
好吧，再修改下，“屬性”->“配置屬性”->“C/C++”->“代碼生成”->“運行時庫”中選取“多線程 DLL (/MD)”。如下圖所示
再編譯，成功了。運行下，又出錯了——“應用程序發生異常未知的軟件異常(0xe0434f4d)，位置為 0x7c812fd3“。如下圖所示（圖片訪問不了？請訪問
這個怎麼解決了，很簡單，這是因為EXE程序沒能加載到DLL文件導致的，將CShapeDLL.dll拷貝到EXE程序所在目錄下，再運行，成功了。結果如下圖所示（WinXP及Win7均可以運行）：
