C#获取cmd输出，如real cmd窗口所示

我有一个

BackgroundWorker

线程，它运行cmd进程并向其中写入多个命令。有些命令可能需要一段时间才能完成，因此我想向用户显示进度的cmd输出。 我运行cmd命令的代码如下所示：

private void backgroundWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
    var startInfo = new ProcessStartInfo("cmd.exe")
    {
        UseShellExecute = false,
        RedirectStandardInput = true,
        RedirectStandardOutput = true,
        CreateNoWindow = true
    };

    cmd = new Process { StartInfo = startInfo };

    cmd.OutputDataReceived += Cmd_OutputDataReceived;
    cmd.Start();
    cmd.BeginOutputReadLine();

    cmd.StandardInput.WriteLine($"cd {baseFolder}\\External Resources\\img files\\uboot");

    string[] commands = CmdCommands.GetUbootFlashCommands();
    foreach (var command in commands)
        cmd.StandardInput.WriteLine(command);

    cmd.StandardInput.WriteLine($"cd {baseFolder}\\External Resources\\img files\\android");
    commands = CmdCommands.GetKernelFlashCommands();
    foreach (var command in commands)
        cmd.StandardInput.WriteLine(command);

    cmd.StandardInput.WriteLine("exit");
    cmd.WaitForExit();
}

private void Cmd_OutputDataReceived(object sender, DataReceivedEventArgs e)
{
    Invoke(new Action(() =>
    {
        txtCmd.Text += e.Data + Environment.NewLine;
    }));
}

但是cmd输出与常规cmd窗口中显示的实际输出没有任何区别。 以下是我的输出的样子：

Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.

C:\>cd C:\img files\uboot

C:\img files\uboot>fastboot flash XXX.bin

C:\img files\uboot>fastboot flash XXX.bin

C:\img files\uboot>cd C:\img files\android

C:\img files\android>fastboot flash kernel

C:\img files\android>fastboot flash system XXX.img

C:\img files\android>fastboot flash userdata XXX.img

C:\img files\android>fastboot flash cache XXX.img

C:\img files\android>exit

下面是当我打开cmd窗口并键入命令时输出的样子：

Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>cd C:\img files\uboot

C:\img files\uboot>fastboot flash bl2 bl2.bin
target didn't report max-download-size
sending 'bl2' (14 KB)...
OKAY [  0.006s]
writing 'bl2'...
OKAY [  0.042s]
finished. total time: 0.052s

C:\img files\uboot>fastboot flash bootloader u-boot.bin
target didn't report max-download-size
sending 'bootloader' (275 KB)...
OKAY [  0.049s]
writing 'bootloader'...
OKAY [  0.046s]
finished. total time: 0.098s

C:\img files\uboot>cd C:\img files\android

C:\img files\android>fastboot flash kernel zImage-dtb
target didn't report max-download-size
sending 'kernel' (5099 KB)...
OKAY [  0.839s]
writing 'kernel'...
OKAY [  0.145s]
finished. total time: 0.988s

C:\img files\android>fastboot flash system system.img
target didn't report max-download-size
sending 'system' (426874 KB)...
OKAY [ 70.327s]
writing 'system'...
OKAY [ 30.963s]
finished. total time: 101.295s

C:\img files\android>fastboot flash userdata userdata.img
target didn't report max-download-size
sending 'userdata' (35680 KB)...
OKAY [  5.895s]
writing 'userdata'...
OKAY [  2.301s]
finished. total time: 8.200s

C:\img files\android>fastboot flash cache cache.img
target didn't report max-download-size
sending 'cache' (6248 KB)...
OKAY [  1.036s]
writing 'cache'...
OKAY [  0.380s]
finished. total time: 1.422s

C:\img files\android>

---

我如何在我的C代码中得到这个输出？

你能试试这个简单的解决方案吗。我不知道在你的情况下能成功多少

        Process p = new Process();
        p.StartInfo.UseShellExecute = false;
        p.StartInfo.RedirectStandardOutput = true;
        p.StartInfo.FileName = "cmd.exe";
        p.StartInfo.Arguments = "/c ping 192.168.x.x"; //or your thing
        p.Start();


        string result = p.StandardOutput.ReadToEnd();
        p.WaitForExit();

---

如果由于某种原因，缺少的信息被定义为fastboot中的错误，则RedirectStandardError应该解决它

 var startInfo = new ProcessStartInfo("cmd.exe")
    {
        UseShellExecute = false,
        RedirectStandardInput = true,
        RedirectStandardOutput = true,
        CreateNoWindow = true,
        RedirectStandardError = true,
    }; 

之后，您需要使用ErrorDataReceived事件来获取错误消息

cmd.ErrorDataReceived+=Cmd_OutputDataReceived
cmd.BeginErrorReadLine();

---

正如不信者@Damien_和@user2033402所建议的，出于某种原因，我需要的输出似乎被重定向到

StandardError

，而不是

StandardOutput

因此，在我的案例中，有效的解决方案是以下代码：

private void backgroundWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
    var startInfo = new ProcessStartInfo("cmd.exe")
    {
        UseShellExecute = false,
        RedirectStandardInput = true,
        RedirectStandardOutput = true,
        RedirectStandardError = true,
        CreateNoWindow = true
    };

    cmd = new Process { StartInfo = startInfo };

    cmd.OutputDataReceived += Cmd_OutputDataReceived;
    cmd.ErrorDataReceived += Cmd_ErrorDataReceived;
    cmd.Start();
    cmd.BeginOutputReadLine();
    cmd.BeginErrorReadLine();

    cmd.StandardInput.WriteLine($"cd {baseFolder}\\External Resources\\img files\\uboot");

    string[] commands = CmdCommands.GetUbootFlashCommands();
    foreach (var command in commands)
        cmd.StandardInput.WriteLine(command);

    cmd.StandardInput.WriteLine($"cd {baseFolder}\\External Resources\\img files\\android");
    commands = CmdCommands.GetKernelFlashCommands();
    foreach (var command in commands)
        cmd.StandardInput.WriteLine(command);

    cmd.StandardInput.WriteLine("exit");
    cmd.WaitForExit();
}

private void Cmd_OutputDataReceived(object sender, DataReceivedEventArgs e)
{
    Invoke(new Action(() =>
    {
        txtCmd.Text += e.Data + Environment.NewLine;
    }));
}

private void Cmd_ErrorDataReceived(object sender, DataReceivedEventArgs e)
{
    Invoke(new Action(() =>
    {
        txtCmd.Text += e.Data + Environment.NewLine;
    }));
}

---

我想你可能想把启动的程序的标准输出导入你的控制台，其中一些可能会出现标准错误——其余的——它是否会随着进度而更新？可能是程序检测到它是否连接到终端，然后只显示该输出。@Marv:这是什么意思？你能发布一个代码样本吗？@Damien_不信者：为什么输出会变成

标准错误？为什么从C#运行cmd和手动运行cmd有什么区别？您只看到看到您看到的行，因为这就是您所做的全部工作—您将它们写入控制台。要接收已启动流程的输出，您必须将自己连接到它们并打印它们返回的内容。这通常是由控制台完成的，但在本例中，由于您负责控制台，因此不会发生这种情况。我尝试了它，但调用了
StandardOutput.ReadToEnd（）
，它会给出相同的输出，并等待所有过程完成，我希望在过程中显示输出。@LiranFriedman放置
p.WaitForExit（）
下面是读取输出，它应该可以工作！我已经编辑了我的答案，这无关紧要，因为代码在这里停止，比如
string result=p.StandardOutput.ReadToEnd（）。需要向参数添加和退出命令，但它仍然提供相同的输出，因此也不需要这样做…我刚刚尝试了添加
RedirectStandardError=true
并调用
cmd.ErrorDataReceived+=cmd\u ErrorDataReceived也是，但也没有输出…尝试使用cmd.StandardError.ReadToEnd（）查看您缺少的是否真的是错误。如果不是，我不知道会是什么。好的luckoh wait“cmd.ErrorDataReceived+=cmd_ErrorDataReceived；”！=“cmd.ErrorDataReceived+=cmd_OutputDataReceived”我知道：“cmd.ErrorDataReceived+=cmd_ErrorDataReceived；”！=“cmd.ErrorDataReceived+=cmd\u OutputDataReceived”。在我的评论中，您可以看到我创建了一个新的方法：-）您认为
cmd.StandardError.ReadToEnd（）
与
cmd.ErrorDataReceived
有什么不同吗？