How to get the name of the function/sub?

[pisceswzh]

Hi,

I am working on a project that need to send a bug report to the administrator whenever it happens. So I use a TRY...CATCH... to catch the bug and send an email to the administrator.

For the time being, I relize it by:

Class ClassLoad
　Private Sub subLoad()
　　Try
　　　* codes
　　Catch ex as Exception
　　　subSendEmail([Email Subject], [Email Body])
　　End Catch
　End Sub
End Class

In the [Email Subject], I want it to be ClassName.SubName. Here it would be ClassLoad.subLoad.

In the [Email Body], I will use ex.message.

The problem is in the [Email Subject]. I don't know how to get the ClassName and the SubName. For the time being, I can only hardcode it. Is there a way to get the ClassName and the SubName using a variable or something?

Thanks!

 

[JohnH]

You can get these in method with reflection:

Dim classname As String = Me.GetType.FullName 'Name
Dim methodname As String = Reflection.MethodInfo.GetCurrentMethod.Name

Also useful if you have a common exception handler or using Application UnhandledException event is StackTrace class:

Dim st As New StackTrace(e.Exception)
Dim methodname As String = st.GetFrame(0).GetMethod.Name

exception.ToString give you more information, including the Exception name and description, and the full StackTrace (method names, which method called which, and during debugging source file and line numbers)

 

[pisceswzh]

Thanks JohnH!

I found another problem! I used your suggestion to try to get the line number of where it went wrong and found the

New StackTrace(ex).GetFrame(0).GetFileLineNumber.ToString

always return a 0 in my cases.

Is there any place that I mistook?

 

[JohnH]

Line numbers are only available if you initialize the StackTrace instance to gather this information, and only in debug mode of course.

 

[pisceswzh]

Then how about get the function/sub name in a module?

Since in this case,

Me.GetType.FullName

won't work.

 

[JohnH]

Of course you can't reference "Me" current instance within a shared method, but the StackTrace method works there.

st.GetFrame(0).GetMethod.ReflectedType.Name

You can also get it from

Reflection.MethodInfo.GetCurrentMethod.ReflectedType.Name