C# combines good performance of C++, compact syntax of C and practically oriented approach of old VB. But be warned C# is still .NET language so forgot C style "when I say, what I say, exactly - no...

public static bool IsValidEmailAddress(string sEmail)
{
if (sEmail == null)
return false;
else
return Regex.IsMatch(sEmail, @"...

I am interested - could you let me know more details please?

You have to copy Reader.dll into bin/debug and bin/release folder, or use absolute path in <DllImport("Reader.dll", EntryPoint:="CommOpen", ExactSpelling:=False, CharSet:=CharSet.Unicode)>

The simplest way how to deal with barcodes is to use special fonts. You simply print the text below the barcode with special font and you are finished. You can print such "text" onto bitmap and save...

VB6 is much simpler and so much easier to learn. It is limited if only pure VB is used but once you get familiar with C++ (like approach or even better you combine it with C++) then is hard to match...

What you are asking - what you described is vss sole purpose - one of you two lock file and the second one works with vss version. When are all changes done file is put back and you will see it as...

Basically, you can modify this: http://support.microsoft.com/kb/308042

But, unfortunately, it won't help you realize true replacement for com (best ever made, simple, fast and reliable!!!) ado's ...