C# 调用外部exe的三种方式

using System.Diagnostics;
Process p = Process.Start("program.exe");
p.WaitForExit();//本行代码不是必须，但是很关键，限制等待外部程序退出后才能往下执行

using System.Diagnostics;
Process p = Process.Start("program.exe 参数");
p.WaitForExit();//本行代码不是必须，但是很关键，限制等待外部程序退出后才能往下执行

IntPtr ShellExecute(IntPtr hwnd, string lpOperation, string lpFile, string lpParameters, string lpDirectory, ShowCommands nShowCmd);

SW_HIDE            = 0;  //隐藏
SW_SHOWNORMAL      = 1;  //用最近的大小和位置显示, 激活
SW_NORMAL          = 1;  //同 SW_SHOWNORMAL
SW_SHOWMINIMIZED   = 2;  //最小化, 激活
SW_SHOWMAXIMIZED   = 3;  //最大化, 激活
SW_MAXIMIZE        = 3;  //同 SW_SHOWMAXIMIZED
SW_SHOWNOACTIVATE  = 4;  //用最近的大小和位置显示, 不激活
SW_SHOW            = 5;  //同 SW_SHOWNORMAL
SW_MINIMIZE        = 6;  //最小化, 不激活
SW_SHOWMINNOACTIVE = 7;  //同 SW_MINIMIZE
SW_SHOWNA          = 8;  //同 SW_SHOWNOACTIVATE
SW_RESTORE         = 9;  //同 SW_SHOWNORMAL
SW_SHOWDEFAULT     = 10; //同 SW_SHOWNORMAL
SW_MAX             = 10; //同 SW_SHOWNORMAL

0                      = 0   //内存不足
ERROR_FILE_NOT_FOUND   = 2;  //文件名错误
ERROR_PATH_NOT_FOUND   = 3;  //路径名错误
ERROR_BAD_FORMAT       = 11; //EXE 文件无效
SE_ERR_SHARE           = 26; //发生共享错误
SE_ERR_ASSOCINCOMPLETE = 27; //文件名不完全或无效
SE_ERR_DDETIMEOUT      = 28; //超时
SE_ERR_DDEFAIL         = 29; //DDE 事务失败
SE_ERR_DDEBUSY         = 30; //正在处理其他 DDE 事务而不能完成该 DDE 事务
SE_ERR_NOASSOC         = 31; //没有相关联的应用程序

// 引入库
[DllImport("shell32.dll")]
static extern IntPtr ShellExecute(IntPtr hwnd, string lpOperation, string lpFile, string lpParameters, string lpDirectory, ShowCommands nShowCmd);

// 调用
string filepath = @"C:\Users\Administrator\Desktop\program.exe";
IntPtr result = ShellExecute(IntPtr.Zero, "open", filepath, "", "", ShowCommands.SW_SHOWNORMAL);

UINT WinExec(exePath,ShowCmd)

// 引入库
[DllImport("kernel32.dll")]
public static extern int WinExec(string programPath, int operType);

// 调用
string pathStr=@"C:\Users\Administrator\Desktop\program.exe";
var result = WinExec(pathStr, (int)ShowWindowCommands.SW_SHOW);

string exefile = "xxx.exe";
if (File.Exists(exefile)) {
    Process process = new Process();　　 // params 为 string 类型的参数，多个参数以空格分隔，如果某个参数为空，可以传入””
    ProcessStartInfo startInfo = new ProcessStartInfo(exefile, params);
    process.StartInfo = startInfo;
    process.Start();
}

string exefile = "xxx.exe";
if (File.Exists(exefile)) {
    Process process = new Process();
    ProcessStartInfo startInfo = new ProcessStartInfo(exefile, path);
    startInfo.UseShellExecute = false;
    startInfo.RedirectStandardOutput = true;    startInfo.CreateNoWindow = true;
    process.StartInfo = startInfo;
    process.Start();
    process.WaitForExit(2000);
    string output = process.StandardOutput.ReadToEnd();
    rtb_analyze.Text = output;
    process.Close();         
}

public void exec(string exePath, string parameters)
{
    Process process = new System.Diagnostics.Process();
    process.StartInfo.FileName = exePath;
    process.StartInfo.Arguments = parameters;
    process.StartInfo.UseShellExecute = false;
    process.StartInfo.CreateNoWindow = true;
    process.StartInfo.RedirectStandardOutput = true;
    process.Start();
    process.BeginOutputReadLine();
    process.OutputDataReceived += new  DataReceivedEventHandler(processOutputDataReceived);
}