Running Command line from an ASPX page, and returning output to page

asp.net, c#

Solution

You have a problem with the syntax of commandline arguments to cmd.exe. This is why cmd never exits. In order to have cmd.exe run a program and then quit, you need to send it the syntax "/c [command]". Try running the same code with the line

        si.StartInfo.Arguments = "dir";

replaced with

        si.StartInfo.Arguments = "/c dir";

and see if it works.

Problem

I'm trying to access the command line and execute a command, and then return the output to my aspx page. A good example would be running dir on page load of an aspx page and returning the output via Response.Write(). I have tried using the code below. When I try debugging this it runs but never finishes loading and no output is rendered. I am using C# and .NET Framework 3.5sp1. Any help much appreciated. Thanks, Bryan ``` public partial class CommandLine : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { System.Diagnostics.Process si = new System.Diagnostics.Process(); si.StartInfo.WorkingDirectory = @"c:\"; si.StartInfo.UseShellExecute = false; si.StartInfo.FileName = "cmd.exe"; si.StartInfo.Arguments = "dir"; si.StartInfo.CreateNoWindow = true; si.StartInfo.RedirectStandardInput = true; si.StartInfo.RedirectStandardOutput = true; si.StartInfo.RedirectStandardError = true; si.Start(); string output = si.StandardOutput.ReadToEnd(); si.Close(); Response.Write(output); } } ```

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