- //判断部分
- public class GF_IsOk
- {
- /// <summary>
- /// 判读是否是IP地址
- /// </summary>
- /// <param name="in_str"></param>
- /// <returns></returns>
- public static bool IsIPStr(string in_str)
- {
- IPAddress ip;
- return IPAddress.TryParse(in_str, out ip);
- }
- /// <summary>
- /// 判断是否是数字
- /// </summary>
- /// <param name="strNumber"></param>
- /// <returns></returns>
- public static bool IsNumber(string strNumber)
- {
- Regex objNotNumberPattern = new Regex("[^0-9.-]");
- Regex objTwoDotPattern = new Regex("[0-9]*[.][0-9]*[.][0-9]*");
- Regex objTwoMinusPattern = new Regex("[0-9]*[-][0-9]*[-][0-9]*");
- String strValidRealPattern = "^([-]|[.]|[-.]|[0-9])[0-9]*[.]*[0-9]+$";
- String strValidIntegerPattern = "^([-]|[0-9])[0-9]*$";
- Regex objNumberPattern = new Regex("(" + strValidRealPattern + ")|(" + strValidIntegerPattern + ")");
- return !objNotNumberPattern.IsMatch(strNumber) &&
- !objTwoDotPattern.IsMatch(strNumber) &&
- !objTwoMinusPattern.IsMatch(strNumber) &&
- objNumberPattern.IsMatch(strNumber);
- }
- /// <summary>
- /// 判断是否是日期字符串
- /// </summary>
- /// <param name="in_str"></param>
- /// <returns></returns>
- public static bool IsDateStr_yyyymmdd(string in_str)
- {
- if (in_str == "") return true;
- if (in_str.Length != 8) return false;
- return IsDateStr(in_str);
- }
- /// <summary>
- /// 判断是否是日期字符串
- /// </summary>
- /// <param name="in_str"></param>
- /// <returns></returns>
- public static bool IsDateStr(string in_str)
- {
- if (in_str == "") return true;
- if (in_str.Length == 8)
- in_str = in_str.Substring(0, 4) + "-" + in_str.Substring(4, 2) + "-" + in_str.Substring(6, 2);
- DateTime dtDate;
- bool bValid = true;
- try
- {
- dtDate = DateTime.Parse(in_str);
- }
- catch (FormatException)
- {
- // 如果解析方法失败则表示不是日期性数据
- bValid = false;
- }
- return bValid;
- }
- /// <summary>
- /// 判断字符串中是否包含汉字,有返回true 否则为false
- /// </summary>
- /// <param name="str"></param>
- /// <returns></returns>
- public static bool IsExistHanZi(string str)
- {
- Regex reg = new Regex(@"[\\u4e00-\\u9fa5]");//正则表达式
- if (reg.IsMatch(str))
- {
- return true;
- }
- else
- {
- return false;
- }
- }
- /// <summary>
- /// 字段串是否为Null或为""(空)
- /// </summary>
- /// <param name="str"></param>
- /// <returns></returns>
- public static bool IsStrNullOrEmpty(string str)
- {
- if (str == null || str.Trim() == string.Empty)
- return true;
- return false;
- }
- /// <summary>
- /// 返回文件是否存在
- /// </summary>
- /// <param name="filename">文件名</param>
- /// <returns>是否存在</returns>
- public static bool IsFileExists(string filename)
- {
- return System.IO.File.Exists(filename);
- }
- /// <summary>
- /// 检测是否符合email格式
- /// </summary>
- /// <param name="strEmail">要判断的email字符串</param>
- /// <returns>判断结果</returns>
- public static bool IsValidEmail(string strEmail)
- {
- return Regex.IsMatch(strEmail, @"^[\\w\\.]+([-]\\w+)*@[A-Za-z0-9-_]+[\\.][A-Za-z0-9-_]");
- }
- public static bool IsValidDoEmail(string strEmail)
- {
- return Regex.IsMatch(strEmail, @"^@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([\\w-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$");
- }
- /// <summary>
- /// 检测是否是正确的Url
- /// </summary>
- /// <param name="strUrl">要验证的Url</param>
- /// <returns>判断结果</returns>
- public static bool IsURL(string strUrl)
- {
- return Regex.IsMatch(strUrl, @"^(http|https)\\://([a-zA-Z0-9\\.\\-]+(\\:[a-zA-Z0-9\\.&%\\$\\-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9\\-]+\\.)*[a-zA-Z0-9\\-]+\\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(\\:[0-9]+)*(/($|[a-zA-Z0-9\\.\\,\\?\\'\\\\\\+&%\\$#\\=~_\\-]+))*$");
- }
- /// <summary>
- /// 判断是否为base64字符串
- /// </summary>
- /// <param name="str"></param>
- /// <returns></returns>
- public static bool IsBase64String(string str)
- {
- //A-Z, a-z, 0-9, +, /, =
- return Regex.IsMatch(str, @"[A-Za-z0-9\\+\\/\\=]");
- }
- /// <summary>
- /// 检测是否有Sql危险字符
- /// </summary>
- /// <param name="str">要判断字符串</param>
- /// <returns>判断结果</returns>
- public static bool IsSafeSqlString(string str)
- {
- return !Regex.IsMatch(str, @"[-|;|,|\\/|\\(|\\)|\\[|\\]|\\}|\\{|%|@|\\*|!|\\']");
- }
- //该片段来自于http://www.codesnippet.cn/detail/040220132060.html
来源: http://www.codesnippet.cn/detail/040220132060.html