Question

foreach (Process newprcs in oPrcs)
 {
  newprocid = (UInt32)newprcs.Id;
  if (!oNewProcs.Contains(newprocid))  //checking process id contain or not
    {
      oNewProcs.Add(newprocid);
      // MessageBox.Show(newprocid.ToString());
      uIdOfProcess = newprocid;
      //MessageBox.Show(uIdOfProcess.ToString(),"ProcessId");
      CInjector.HookingAPI(uIdOfProcess, "HookPrintAPIs.dll");
    }
}

Answer 1

It depends on the type of oPrcs. If it’s a Process[] then it would be:

for (int i = 0; i < oPrcs.Length; i++)
{
    Process newprcs = oPrcs[i];
    ...
}

Otherwise, if the type of oPrcs implements IEnumerable<Process> (which it doesn’t have to, admittedly – but it normally would) you’d get:

using (IEnumerator<Process> iterator = oPrcs.GetEnumerator())
{
    while (iterator.MoveNext())
    {
        Process newprcs = iterator.Current;
        ...
    }
}

Having said all that, I usually wouldn’t convert a foreach loop into a for loop…