Enumerataing processes in C#

[Peter Steele]

It's easy enough to enumerate the current processes in a system, but how can
I find the parent process for a given process?

 

[David Browne]

It's easy enough to enumerate the current processes in a system, but how
can I find the parent process for a given process?

With the framework this information is available through the process
performance counters, but it's slow. It's also available from Win32 apis
CreateToolhelp32Snapshot, Process32First, Process32Next, etc.

Here's a VB example:

http://groups.google.com/groups?hl=en&lr=&[email protected]


David

 

[Willy Denoyette [MVP]]

Easy enough when using System.Management...
Here's a sample:

public static void Main() {
Process p = Process.GetCurrentProcess();
int parentPid = GetParentProcess(p.Id);
Console.WriteLine(parentPid);
}
static int GetParentProcess(int Id)
{
int parentPid=0;
using(ManagementObject mo = new ManagementObject("win32_process.handle='"
+ Id.ToString() + "'"))
{
mo.Get();
parentPid = Convert.ToInt32(mo["ParentProcessId"]);
DumpProcessProperties(parentPid);
}
return parentPid;
}
// dump proces properties to the console
static void DumpProcessProperties(int Id)
{
using(ManagementObject mo = new ManagementObject("win32_process.handle='"
+ Id.ToString() + "'"))
{
mo.Get();
foreach(PropertyData pd in mo.Properties)
{
Console.WriteLine("Property: {0}, Value: [{1}]",pd.Name, pd.Value);
}
}
}

Willy.

 

[Peter Steele]

Thanks, I thought there'd be a newer approach to the problem.

Easy enough when using System.Management...
Here's a sample:

public static void Main() {
Process p = Process.GetCurrentProcess();
int parentPid = GetParentProcess(p.Id);
Console.WriteLine(parentPid);
}
static int GetParentProcess(int Id)
{
int parentPid=0;
using(ManagementObject mo = new ManagementObject("win32_process.handle='"
+ Id.ToString() + "'"))
{
mo.Get();
parentPid = Convert.ToInt32(mo["ParentProcessId"]);
DumpProcessProperties(parentPid);
}
return parentPid;
}
// dump proces properties to the console
static void DumpProcessProperties(int Id)
{
using(ManagementObject mo = new ManagementObject("win32_process.handle='"
+ Id.ToString() + "'"))
{
mo.Get();
foreach(PropertyData pd in mo.Properties)
{
Console.WriteLine("Property: {0}, Value: [{1}]",pd.Name, pd.Value);
}
}
}

Willy.

It's easy enough to enumerate the current processes in a system, but how
can I find the parent process for a given process?