Regex for AlphaNumeric password validation

Regular Expression for validating the string (?!^[0-9]*$)(?!^[a-zA-Z]*$)^([a-zA-Z0-9]{8,20})$ The above RegEx requires at least one digit, at least one alphabetic character, no special characters, and from 8-20 characters in length.

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Accessing System information through Environment in C#

The Environment List When a program is executed, it is also passed a list of current environmental variables (such as HOME, PATH etc). This is the same in both Unix and Windows. The following code example shows how a call to Environment.GetEnvironmentVariables returns all the currently defined variables. The following code explores the various members…

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