public bool IsAlphaNumericString(string strAlphanum) {
System.Text.RegularExpressions.Regex pattern = new System.Text.RegularExpressions.Regex(@"^[A-Za-z0-9]+$");
return pattern.IsMatch(strAlphanum.Trim());
}
public bool IsNumeric(string strAlphanum) {
System.Text.RegularExpressions.Regex pattern = new System.Text.RegularExpressions.Regex(@"^[0-9]+$");
return pattern.IsMatch(strAlphanum.Trim());
}