C#调用已经安装的程序打开文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace ConsoleApplication1
{
    class Program
    {
        [DllImport("kernel32.dll")]  
        public static extern int WinExec(string exeName, int operType);//添加申明调用的是系统提供的函数
        static void Main(string[] args)
        {
           // WinExec(@"C:\Program Files\Microsoft Visual Studio\Common\MSDev98\Bin\MSDEV.EXE",3);//打开vc++6.0
            System.Diagnostics.Process.Start(@"C:\Program Files\Microsoft Visual Studio\Common\MSDev98\Bin\MSDEV.EXE", @"D:liu.c");//使用vc++6.0打开liu.c文件
        }
    }
}