HOWTO Make StreamReader class not block.
Please help,
I'm trying to use the Std-Out from a process I launch, to read back data
from the process, until either the data I expcet is passed, or a time limit
hgas expired. My problem is that the StreamReader class blocks until the
process writes something. Here is a snippet of code with the problem:
Process_MyProcess = new System.Diagnostics.Process();
ProcessStartInfo_MyProcess = new
System.Diagnostics.ProcessStartInfo();
ProcessStartInfo_MyProcess.FileName = "My Path";
ProcessStartInfo_MyProcess.RedirectStandardInput = true;
ProcessStartInfo_MyProcess.RedirectStandardOutput = true;
ProcessStartInfo_MyProcess.UseShellExecute = false;
Process_MyProcess.StartInfo = ProcessStartInfo_MyProcess;
if (!Process_MyProcess.Start())
{
throw(new Exception("Error"));
}
StreamWriter_StdIn = Process_MyProcess.StandardInput;
StreamWriter_StdIn.Write(csStdIn);
StreamReader_StdOut = Process_MyProcess.StandardOutput;
int iChar, iTotalTimesInSeconds = 0;
DateTime DateTime_Start = DateTime.Now;
TimeSpan TimeSpan_Temp;
// ERROR!
//
// I want to use ReadLine, but that blocks, Even Peek as shown below
blocks...
//
// what can I do?
for
(
TimeSpan_Temp = DateTime.Now - DateTime_Start,
iChar = StreamReader_StdOut.Peek(); <== This blocks!!!!!
((iChar < 0) && (TimeSpan_Temp.TotalSeconds < 30));
TimeSpan_Temp = DateTime.Now - DateTime_Start,
iChar = StreamReader_StdOut.Peek()
)
{
System.Threading.Thread.Sleep(100);
}
