StringAndNumberValidation (nuget): Checking if a string is null by passing the string input and the error message as the second parameter; Checking if a number is an int and return true, second it checker checks if a number is and int and return the number if it an int. All the validation is done in this methods your own is just to pass in the value and watch the majic.
Keywords: string|validation|checker|number|Convertion|to|null|input