[英]How do I run Command line commands from code
I need to do 2 things: run a batch file (works fine), and run a command (does not work). 我需要做两件事:运行批处理文件(工作正常),并运行命令(不起作用)。 The method for the command throws the exception 'file not found'.
该命令的方法抛出异常'file not found'。 If I open a cmd window, and type the command, it works perfectly.
如果我打开一个cmd窗口,并键入命令,它可以正常工作。
private static void Rescan()
{
//System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo("DEVCON ReScan");
//psi.RedirectStandardOutput = true;
//psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
//psi.UseShellExecute = false;
//System.Diagnostics.Process proc = System.Diagnostics.Process.Start(psi);
System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo.FileName = "DEVCON ReScan";
proc.StartInfo.RedirectStandardError = true;
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.UseShellExecute = false;
proc.Start();
proc.WaitForExit();
System.IO.StreamReader myOutput = proc.StandardOutput;
proc.WaitForExit(4000);
if (proc.HasExited)
{
string output = myOutput.ReadToEnd();
FileIO.WriteLog(_writePath, output);
}
}
The commented code also throws the same exception. 注释的代码也会抛出相同的异常。
DEVCON ReScan
is really the name of the executable? DEVCON ReScan
真的是可执行文件的名称吗? I guess the executable is DEVCON, while ReScan is a parameter. 我猜可执行文件是DEVCON,而ReScan是一个参数。 This means you have to set StartInfo.FileName to "DEVCON" and StartInfo.Arguments to "ReScan".
这意味着您必须将StartInfo.FileName设置为“DEVCON”并将StartInfo.Arguments设置为“ReScan”。
Is the DEVCON application actually in the working directory ? DEVCON应用程序实际上是在工作目录中吗? Otherwise it won't work unless you specify the full path to it.
否则,除非您指定它的完整路径,否则它将无法工作。
Furthermore you have to specify the extension, so I suppose you'd go for "Devcon.exe", and specify the parameters not in the filename but in the parameters :) 此外,你必须指定扩展名,所以我想你会选择“Devcon.exe”,并指定不在文件名中但参数中的参数:)
Try this: 尝试这个:
ProcessStartInfo psi = new ProcessStartInfo();
psi.FileName = Environment.GetEnvironmentVariable("comspec");
psi.CreateNoWindow = true;
psi.RedirectStandardError = true;
psi.RedirectStandardInput = true;
psi.RedirectStandardOutput = true;
psi.UseShellExecute = false;
Process p = Process.Start(psi);
ConsoleColor fc = Console.ForegroundColor;
StreamWriter sw = p.StandardInput;
StreamReader sr = p.StandardOutput;
char[] buffer = new char[1024];
int l = 0;
sw.Write("DEVCON ReScan");
sw.Write(sw.NewLine);
Console.Write(">> ");
l = sr.Read(buffer, 0, buffer.Length);
for (int n = 0; n < l; n++)
Console.Write(buffer[n] + " ");
p.Close();
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