一个窗体调另一个另一个exe中的窗体

[zyxfcb1520]

两窗体执行一样的动作

[ErrorCode1987]

查一下进程间通信的东西，相信很容易解决
GBY（google,baidu,yahoo）是你最好的老师～

[freeboy827]

用API发送消息

[hoken2020856]

用WCF吧，解决各种通信问题

[wuyq11]

findwidnow查找句柄
[DllImport ( "user32.dll", EntryPoint = "FindWindow", SetLastError = true )]
private static extern IntPtr FindWindow( string lpClassName, string lpWindowName );
[DllImport ( "user32.dll", EntryPoint = "FindWindowEx", SetLastError = true )]
private static extern IntPtr FindWindowEx( IntPtr hwndParent, uint hwndChildAfter, string lpszClass, string lpszWindow );
[DllImport ( "user32.dll", EntryPoint = "SendMessage", SetLastError = true, CharSet = CharSet.Auto )]
private static extern int SendMessage( IntPtr hwnd, uint wMsg, int wParam, int lParam );
[DllImport ( "user32.dll", EntryPoint = "SetForegroundWindow", SetLastError = true )]
private static extern void SetForegroundWindow( IntPtr hwnd )
const uint BM_CLICK = 0xF5;
IntPtr hwndCalc = FindWindow ( null, "" );
if ( hwndCalc != IntPtr.Zero )
{

}

[wy811007]

用api 找窗体句柄 然后传参 告诉他要做什么。。