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Investigating a Specific Process

In addition to obtaining a full and complete list of all running processes on a given machine, the

static Process.GetProcessById() method allows you to obtain a single Process type via the associ-

ated PID. If you request access to a nonexistent PID, an ArgumentException exception is thrown. For

example, if you were interested in obtaining a Process object representing a process with the PID of

987, you could write the following:

// If there is no process with the PID of 987, a

// runtime exception will be thrown.

static void GetSpecificProcess()

{

Process theProc =  null;

try

{

theProc = Process.GetProcessById(987);

}

catch  // Generic catch for used simplicity.

{

Console.WriteLine("-> Sorry...bad PID!");

}

}

Investigating a Process’s Thread Set

The Process class type also provides a manner to programmatically investigate the set of all

threads currently used by a specific process. The set of threads is represented by the strongly typed

ProcessThreadCollection collection, which contains some number of individual ProcessThread

types. To illustrate, assume the following additional static helper function has been added to your

current application:

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static void EnumThreadsForPid(int pID)

{

Process theProc = null;

try

{

theProc = Process.GetProcessById(pID);

}

catch

{

Console.WriteLine("-> Sorry...bad PID!");

Console.WriteLine("************************************\n");

return;

}