往bat文件中写信息时如 start "C:\Program Files\VCG\MeshLab\meshlab.exe"这种
C#中，应先定义string 类型的变量str22
string str22 = "start"+" "+@"""C:\Program Files\VCG\MeshLab\meshlab.exe""" + " " + "out" +num1.ToString() + ".ply";
File.WriteAllText("3D-point2.bat", str22, Encoding.GetEncoding(936));
RunBat(@point);
完后就可以了