Do you use a regular expression to validate an email address?
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A regex is the best way to verify an email address.
public bool IsValidEmail(string email){// Return true if it is in valid email format.if (email.IndexOf("@") <= 0) return false;if (email.EndWith("@")) return false;if (email.IndexOf(".") <= 0) return false;if ( ...}
❌ Figure: Figure: Bad example of verify email address
public bool IsValidEmail(string email){// Return true if it is in valid email format.return System.Text.RegularExpressions.Regex.IsMatch( email,@"^([\w-\.]+)@(([[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$";}
✅ Figure: Figure: Good example of verify email address