c# - generating string from exited characters -

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i have character array shown below :

char[] pwdchararray = "abcdefghijklmnopqrstuvwxyzabcdefg" +             "hijklmnopqrstuvwxyz0123456789`~!@#$%^&*()-_=+[]{}\\|;:'\",<" +              ".>/?".tochararray();

and char array, want generate string of minimum length 7 , characters in string should above char array. how operation?

generate 7 random numbers between 0 , yourarray.length -1. pick corresponding char in array , put in final string.

here code stringbuilder:

stringbuilder sb = new stringbuilder(); random random = new randdom(); for(int i=0; i<7; i++) {     sb.append(pwdchararray[random.nextint(0, pwdchararray.length -1)]); } return sb.tostring();

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