C＃運行命令不執行命令

Question

我想運行此：

string command = "echo test > test.txt"; 
System.Diagnostics.Process.Start("cmd.exe", command); 

它不工作，我究竟做錯了什麼？

Answer 1

您錯過了將/C切換爲cmd.exe以表示您要執行命令。還要注意，命令放在雙引號：

string command = "/C \"echo test > test.txt\""; 
System.Diagnostics.Process.Start("cmd.exe", command).WaitForExit(); 

如果你不希望看到的shell窗口，你可以使用以下命令：

string command = "/C \"echo test > test.txt\""; 
var psi = new ProcessStartInfo("cmd.exe") 
{ 
    Arguments = command, 
    UseShellExecute = false, 
    CreateNoWindow = true 
}; 

using (var process = Process.Start(psi)) 
{ 
    process.WaitForExit(); 
} 

Answer 2

Process類不會產生任何文件。你需要爲此使用File類。例;

string path = @"c:\temp\test.txt"; 
     if (!File.Exists(path)) 
     { 
      // Create a file to write to. 
      using (StreamWriter sw = File.CreateText(path)) 
      { 
       sw.WriteLine("Hello"); 
       sw.WriteLine("And"); 
       sw.WriteLine("Welcome"); 
      } 
     } 

Answer 3

這應該有點讓你開始：

//create your command 
string cmd = string.Format(@"/c echo Hello World > mydata.txt"); 
//prepare how you want to execute cmd.exe 
ProcessStartInfo psi = new ProcessStartInfo("cmd.exe"); 
psi.Arguments = cmd;//<<pass in your command 
//this will make echo's and any outputs accessiblen on the output stream 
psi.RedirectStandardOutput = true; 
psi.UseShellExecute = false; 
psi.CreateNoWindow = true; 
Process p = Process.Start(psi); 
//read the output our command generated 
string result = p.StandardOutput.ReadToEnd();