MessageBox和DialogResult程序报错

Question

VC++6.0网上找的点击“是”进入下一步的代码，然后我用main函数执行下面的代码
string message = "You did not enter a server name. Cancel this operation?";
string caption = "No Server Name Specified";
MessageBoxButtons buttons = MessageBoxButtons.YesNo;
DialogResult result;

    //显示MessageBox.
    result = MessageBox.Show(this, message, caption, buttons);

    //如果点击的是"YES"按钮,将form关闭.
    if(result == DialogResult.Yes)
    {
        // Closes the parent form.
        this.Close();
    }

然后报了错，请问是什么问题，最好能给一份完整的代码，本人新手
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2065: 'DialogResult' : undeclared identifier
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2228: left of '.Yes' must have class/struct/union type
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2228: left of '.Show' must have class/struct/union type
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2065: 'MessageBoxButtons' : undeclared identifier
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2228: left of '.YesNo' must have class/struct/union type
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2065: 'MessageBoxIcon' : undeclared identifier
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2228: left of '.Information' must have class/struct/union type
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2065: 'MessageBoxDefaultButton' : undeclared identifier
C:\Desktop\ceshi1\ceshi1.cpp(13) : error C2228: left of '.Button1' must have class/struct/union type
C:\Desktop\ceshi1\ceshi1.cpp(15) : error C2228: left of '.Show' must have class/struct/union type
C:\Desktop\ceshi1\ceshi1.cpp(17) : warning C4508: 'main' : function should return a value; 'void' return type assumed

Answer 1

 这代码是C#的，不是C++的。

C++的写法是
if (MessageBox(NULL. "You did not enter a server name. Cancel this operation?", "No Server Name Specified", MB_YESNO) == IDYES)
//接下去的代码