How frequently does the letter "," appear in:
Q: Limitations of copy/cut paste functions in System.IO I'm developing a desktop application (a File Manager) in C#.
For copy/cut and paste operations I will use the default methods in .NET like  
System.IO.File.Copy()  
System.IO.File.Move()

Are there any limitations of these methods that I should know about ? and if there are, what are the alternatives of these methods ? (win32 API maybe)

A: Among the things that you have to watch for:
0-Invalid target path name (characters not allowed, etc.)
1-Long file names for the target path
2-Concurrency problems
3-Target path availability
4-Security
5-File/Directory may be readonly (in case of Cut)
6-Hidden files

A: There is a known limitation of 259 characters, since .NET Framework does not support UNC paths. In this case, you have to use native calls.
There are probably other limitations, but, well, you have to be more specific in your question, since Programmers.SE is not a place for "do my work for me"-style questions.

user
In that passage, there are 8 occurrences of the letter ",."
assistant