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Many of you have probably worked with reading and writing to file at run time in VB6. In .NET, we have a facility which makes the same easier. This is through two classes: one is trace class and other is debug class. I will be explaining trace class here.
Suppose you wanted to write certain log data to file during runtime based on the execution flow.
Code:
imports system.io
dim objfilestream as nes system.io.filestream("c:test.log" ,system.io.filemode.openorcreate)
dim objtrace as new TextWriterTraceListener(objfilestream )
----in button click------
trace.listeners.add(objtrace)
trace.writeline("Error in proc A")
trace.flush()
--------
'to flush the data
'to file
'you can
set 'trace.autoflush = true
so that trace.flush need not be set each time.
You can use trace.writelineif method to check a certain condition before writing to a file.
