如何使用 Windows 服务 C# .net 在文件中列出所有打开的应用程序？

Question

我发现了一段代码，它是用控制台应用程序编写的并且也可以工作。 这是代码..

            Process[] processlist = Process.GetProcesses();

            foreach (Process process in processlist)
            {
                if (!String.IsNullOrEmpty(process.MainWindowTitle))
                {
                    Console.WriteLine("Process: {0} ID :{1} Window Title :{2}", process.ProcessName, process.Id, process.MainWindowTitle);
                }
            } 

我已经修改了这样的代码......

            StreamWriter str = new StreamWriter("D:\\loop.txt", true);
            str.WriteLine("**** List of Application *********");

            Process[] processlist = Process.GetProcesses();

            foreach (Process process in processlist)
            {
                if (!String.IsNullOrEmpty(process.MainWindowTitle))
                {
                    str.WriteLine("Process: {0} ID :{1} Window Title :{2}", process.ProcessName, process.Id, process.MainWindowTitle);
                }
            }
            str.close();

但它在 Windows 服务中不起作用。我做错了吗？我是 Windows 服务的新手。有没有人可以帮助我？我应该怎么办？

Answer 1

你忘了Close直播

引用：

您必须调用 Close 以确保所有数据都正确写入底层流。在调用 Close 之后，StreamWriter 上的任何操作都可能引发异常。如果磁盘空间不足，调用 Close 会引发异常。

更正的代码：

StreamWriter str = new StreamWriter("D:\\loop.txt", true);
str.WriteLine("**** List of Application *********");

Process[] processlist = Process.GetProcesses();

foreach (Process process in processlist)
{
   if (!String.IsNullOrEmpty(process.MainWindowTitle))
   {
       str.WriteLine("Process: {0} ID :{1} Window Title :{2}", process.ProcessName, process.Id, process.MainWindowTitle);
   }
}

str.Close(); // You need to close the stream

替代方案：Using

using (StreamWriter str = new StreamWriter("D:\\loop.txt", true))
{
     str.WriteLine("**** List of Application *********");

     Process[] processlist = Process.GetProcesses();

     foreach (Process process in processlist)
     {
          if (!String.IsNullOrEmpty(process.MainWindowTitle))
          {
            str.WriteLine("Process: {0} ID :{1} Window Title :{2}", process.ProcessName, process.Id, process.MainWindowTitle);
           }
      }
}