Could not understand few lines of codes which I got after decompiling a DLL

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I decompiled the one dll and exported to Project/Solution.
I tried to understand lines of codes but i could not understand following lines.

C#

Type type;
object objectValue = RuntimeHelpers.GetObjectValue(type.GetField("processInfo", BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.NonPublic).GetValue((object) Process.GetCurrentProcess()));
strFrom = StringType.FromObject(objectValue.GetType().GetField("processName", BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic).GetValue(RuntimeHelpers.GetObjectValue(objectValue)));
Logger.write("process: " + strFrom);

i did not understand what these lines of codes are doing.
Could you please explain.

Thank you.

What I have tried:

I tried to looking into the documentation and search in internet

Posted 6-Dec-16 5:43am

gaurav.s23

Updated 6-Dec-16 6:48am

CHill60

v2

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CHill60 6-Dec-16 12:15pm

I've removed the VB tag from your question as this is not VB

2 solutions

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Richard MacCutchan · Answer 1 · 2016-12-06T06:20:00

Solution 1

Getting information about ProcessInfo Class (System.Web)[^].

Posted 6-Dec-16 6:20am

Richard MacCutchan

Richard Deeming · Answer 2 · 2016-12-06T06:48:00

Solution 2

The code seems to be using private reflection[^] to read a value that's already exposed via a public property:
Process.ProcessName Property (System.Diagnostics)[^]

It's roughly equivalent to:

C#

strFrom = Process.GetCurrentProcess().ProcessName;
Logger.write("process: " + strFrom);

Posted 6-Dec-16 6:48am

Richard Deeming

Comments

[no name] 6-Dec-16 14:00pm

I just noticed that above code was in catch block if
strFrom = Process.GetCurrentProcess().ProcessName;
Logger.write("process: " + strFrom);
throw exception.

[no name] 7-Dec-16 11:50am

Above code block in question is in catch block which is trying an attempt to get the process name if Process.GetCurrentProcess().ProcessName; failed for some reason. But above code doesn't build because Type has not been initialised. So is there any other way to make it work around?

[no name] 7-Dec-16 12:10pm

code looks like this :
string strFrom = Logger.EmailExceptionFrom.Trim();
if (strFrom.Length == 0)
{
try
{
strFrom = Process.GetCurrentProcess().ProcessName;
}
catch (Exception ex1)
{
ProjectData.SetProjectError(ex1);
Logger.write("Could not determine program name; attempting workaround...", 1);
try
{
Type type;
object objectValue = RuntimeHelpers.GetObjectValue(type.GetField("processInfo", BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.NonPublic).GetValue((object) Process.GetCurrentProcess()));
strFrom = StringType.FromObject(objectValue.GetType().GetField("processName", BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic).GetValue(RuntimeHelpers.GetObjectValue(objectValue)));
Logger.write("process: " + strFrom, 1);
}
catch (Exception ex2)
{
ProjectData.SetProjectError(ex2);
Logger.write("Setting program name to 'WebService' since workaround failed: " + ex2.StackTrace, 1);
ProjectData.ClearProjectError();
}
ProjectData.ClearProjectError();
}
}

Problem is I can't re build this code. I get error - Use of unassigned local variable 'type'. Is there any work around?

Richard Deeming 7-Dec-16 13:37pm

Either use the code I posted, or initialize the type variable.

Type type = typeof(Process);