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How to Properly Execute Batch Files in C# and Handle ExitCode 1 Errors?

Patricia Arquette
Patricia ArquetteOriginal
2025-01-27 04:38:08803browse

How to Properly Execute Batch Files in C# and Handle ExitCode 1 Errors?

Execute batch file in C#

In C#, you can use the Process class to execute batch files. However, if the batch file is located in the C:\Windows\System32 directory, execution may fail and return ExitCode 1, indicating a general error.

To resolve this issue, redirect the standard output and error streams in the ExecuteCommand() function:

<code class="language-csharp">public void ExecuteCommand(string command)
{
    int exitCode;
    ProcessStartInfo processInfo;
    Process process;

    processInfo = new ProcessStartInfo("cmd.exe", "/c " + command);
    processInfo.CreateNoWindow = true;
    processInfo.UseShellExecute = false;
    processInfo.RedirectStandardError = true;
    processInfo.RedirectStandardOutput = true;

    process = Process.Start(processInfo);
    process.WaitForExit();

    string output = process.StandardOutput.ReadToEnd();
    string error = process.StandardError.ReadToEnd();

    exitCode = process.ExitCode;

    Console.WriteLine("输出>>" + (String.IsNullOrEmpty(output) ? "(无)" : output));
    Console.WriteLine("错误>>" + (String.IsNullOrEmpty(error) ? "(无)" : error));
    Console.WriteLine("ExitCode: " + exitCode.ToString());
    process.Close();
}</code>

Modification 1:

If the error persists, move the batch file to a different location outside of the System32 directory.

Modification 2:

To avoid potential deadlocks when reading the stream, implement an asynchronous read method like this:

<code class="language-csharp">public void ExecuteCommand(string command)
{
    int exitCode;
    ProcessStartInfo processInfo;
    Process process;

    processInfo = new ProcessStartInfo("cmd.exe", "/c " + command);
    processInfo.CreateNoWindow = true;
    processInfo.UseShellExecute = false;
    processInfo.RedirectStandardError = true;
    processInfo.RedirectStandardOutput = true;

    process = Process.Start(processInfo);

    process.OutputDataReceived += (object sender, DataReceivedEventArgs e) =>
        Console.WriteLine("输出>>" + e.Data);
    process.BeginOutputReadLine();

    process.ErrorDataReceived += (object sender, DataReceivedEventArgs e) =>
        Console.WriteLine("错误>>" + e.Data);
    process.BeginErrorReadLine();

    process.WaitForExit();

    exitCode = process.ExitCode;
    Console.WriteLine("ExitCode: {0}", exitCode);
    process.Close();
}</code>

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