/// <summary>
/// 验证EMail是否合法
/// </summary>
/// <param name="email">要验证的Email</param>
public static bool IsEmail(string email)
{
//如果为空，认为验证不合格
if (IsNullOrEmpty(email))
{
return false;
}
//清除要验证字符串中的空格
email = email.Trim();
//模式字符串
string pattern = @"^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})$";
//验证
return RegexHelper.IsMatch(email, pattern);
}