how to genarate Random string in C#

Why not uaing Random class to achieve your goal.

 

Take a variable with AtoZ and another numeric from 0 to 9, then use the random class to fetch from the 2 variables and you ll get your deaired output, just you need to overcome the duplicacy.

 

Check link for more reference

http://www.c-sharpcorner.com/article/generating-random-number-and-string-in-C-Sharp/ 

 

http://stackoverflow.com/questions/1344221/how-can-i-generate-random-alphanumeric-strings-in-c