我正在使用第 3 方控制台应用程序,该应用程序定期将数据逐行输出到控制台。当我试图通过我的应用程序运行它以便解析输出数据时,我注意到 OutPutstream 只有在应用程序退出后才可读。
我使用 C# 控制台应用程序测试了我的应用程序,该应用程序每 5 秒向控制台输出一些内容,并且按预期工作。我调用的第 3 方进程是用 Java 或 C++ 编写的(不确定),但它似乎可能不符合 .NET 对控制台应用程序的期望标准。
是否有另一种方法来读取控制台应用程序输出的数据?
编辑:我正在从 WPF 应用程序调用进程。所以需要异步读取。
编辑 2:控制台应用程序从 USB 设备(加速度计 - http://www.gcdataconcepts.com/)读取数据。
下面是我使用的代码:
public void RunProcess()
{
Process process = new Process();
process.StartInfo.FileName = "consoleApp.exe";
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.CreateNoWindow = true;
process.OutputDataReceived += new DataReceivedEventHandler(OutputHandler);
process.Start();
process.BeginOutputReadLine();
}
private void OutputHandler(object sendingProcess, DataReceivedEventArgs outLine)
{
if (!string.IsNullOrEmpty(outLine.Data))
{
Dispatcher.Invoke(new Action(() =>
{
textBlock1.Text += outLine.Data + Environment.NewLine;
}), System.Windows.Threading.DispatcherPriority.Normal);
}
}
最佳答案
protected virtual void StartProcess() {
// Start a new process for the cmd
process = new Process();
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.CreateNoWindow = true;
process.StartInfo.FileName = FileName;
process.StartInfo.Arguments = Arguments;
process.StartInfo.WorkingDirectory = WorkingDirectory;
process.Start();
// Invoke stdOut and stdErr readers - each
// has its own thread to guarantee that they aren't
// blocked by, or cause a block to, the actual
// process running (or the gui).
new MethodInvoker(ReadStdOut).BeginInvoke(null, null);
new MethodInvoker(ReadStdErr).BeginInvoke(null, null);
}
/// <summary>
/// Handles reading of stdout and firing an event for
/// every line read
/// </summary>
protected virtual void ReadStdOut() {
string str;
while ((str = process.StandardOutput.ReadLine()) != null)
{
FireAsync(StdOutReceived, this, new DataReceivedEventArgs(str));
}
}
/// <summary>
/// Handles reading of stdErr
/// </summary>
protected virtual void ReadStdErr() {
string str;
while ((str = process.StandardError.ReadLine()) != null)
{
FireAsync(StdErrReceived, this, new DataReceivedEventArgs(str));
}
}
关于c# - 控制台应用程序不会定期刷新输出,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4916348/