How do i list all opened application in a file using windows service C# .net?

Question

i found a piece of code which is written in console application and also working. here is the code..

            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);
                }
            } 

and i have modified the code like this...

            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();

but it is not working in windows service. Did i made a mistake? i am new to windows service . is there any one can help me? what should i do?

Answer 1

You have forgot to Close the stream

Quoted:

You must call Close to ensure that all data is correctly written out to the underlying stream. Following a call to Close, any operations on the StreamWriter might raise exceptions. If there is insufficient space on the disk, calling Close will raise an exception.

Corrected code :

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

Alternative : 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);
           }
      }
}