////// 数据验证类 /// public class Validator { ////// 验证是否为正整数 /// /// ///public static bool IsNumeric(string str) { if (!string.IsNullOrEmpty(str)) { return Regex.IsMatch(str, @"^[0-9]*$"); } else return false; } /// /// 判断对象是否为Int32类型的数字 /// /// 需验证数据 ///public static bool IsInt(object expression) { if(expression != null) { string str = expression.ToString(); if(str.Length > 0 && str.Length <= 11 && Regex.IsMatch(str, @"^[-]?[0-9]*[.]?[0-9]*$")) { if((str.Length < 10) || (str.Length == 10 && str[0] == '1') || (str.Length == 11 && str[0] == '-' && str[1] == '1')) { return true; } } } return false; } /// /// 是否为long类型 /// /// 需要判断的数据 ///public static bool IsLong(string str) { long temp; try { temp = long.Parse(str); return true; } catch { return false; } } /// /// 是否为float类型 /// /// 要验证的字符串 ///public static bool IsFloat(object expression) { if(expression != null) { return Regex.IsMatch(expression.ToString(), @"^([0-9])[0-9]*(\.\w*)?$"); } return false; } /// /// 是否为Decimal类型 /// /// 需验证字符串 ///验证结果 public static bool IsDecimal(string input) { if(string.IsNullOrEmpty(input)) { return false; } if(Regex.IsMatch(input, "^([0-9]{1,})$")) { return true; } return Regex.IsMatch(input, "^[0-9]+[.]?[0-9]+$"); } ////// 验证字符串是否日期[2004-2-29|||2004-02-29 10:29:39 pm|||2004/12/31] /// /// 要验证的字符串 ///public static bool IsDate(string input) { if(string.IsNullOrEmpty(input)) { return false; } string regexString = @"^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\s(((0?[1-9])|(1[0-2]))\:([0-5][0-9])((\s)|(\:([0-5][0-9])\s))([AM|PM|am|pm]{2,2})))?$"; return Regex.IsMatch(input, regexString); } /// /// 是否为时间 /// ///public static bool IsTime(string timeval) { return Regex.IsMatch(timeval, @"^((([0-1]?[0-9])|(2[0-3])):([0-5]?[0-9])(:[0-5]?[0-9])?)$"); } /// /// 检测是否为有效的手机号码 /// /// ///public static bool IsMobile(string mobile) { mobile = mobile.Trim(); //如果号码长度大于11，移除第一位的0 if(mobile.Length > 11) { if(mobile.Substring(0, 1) == "0") mobile = mobile.Remove(0, 1); } //长度不等11 if(mobile.Length != 11) return false; return Regex.IsMatch(mobile, @"^1[358]\d{9}$", RegexOptions.IgnoreCase); } /// /// 是否为邮箱地址 /// /// 需验证字符串 ///验证结果 public static bool IsEmail(string input) { if(string.IsNullOrEmpty(input)) { return false; } return Regex.IsMatch(input, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$"); } ////// 验证字符串是否为IP地址 /// /// 需验证字符串 ///验证结果 public static bool IsIP(string input) { return Regex.IsMatch(input, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$"); } ////// 是否为邮政编码 /// /// 需验证字符串 ///验证结果 public static bool IsPostcode(string input) { return (IsNumeric(input) && (input.Length == 6)); } ////// 判断是否为base64字符串 /// /// ///public static bool IsBase64String(string str) { //A-Z, a-z, 0-9, +, /, = return Regex.IsMatch(str, @"[A-Za-z0-9\+\/\=]"); } /// /// 判断文件流是否为UTF8字符集 /// /// 文件流 ///判断结果 private static bool IsUTF8(FileStream sbInputStream) { int i; byte cOctets; // octets to go in this UTF-8 encoded character byte chr; bool bAllAscii = true; long iLen = sbInputStream.Length; cOctets = 0; for(i = 0; i < iLen; i++) { chr = (byte)sbInputStream.ReadByte(); if((chr & 0x80) != 0) bAllAscii = false; if(cOctets == 0) { if(chr >= 0x80) { do { chr <<= 1; cOctets++; } while((chr & 0x80) != 0); cOctets--; if(cOctets == 0) return false; } } else { if((chr & 0xC0) != 0x80) { return false; } cOctets--; } } if(cOctets > 0) { return false; } if(bAllAscii) { return false; } return true; } ////// 是否为URL网址 /// /// 需验证字符串 ///验证结果 public static bool IsURL(string input) { if(string.IsNullOrEmpty(input)) { return false; } return Regex.IsMatch(input, @"^(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]+)*(/($|[a-zA-Z0-9\.\,\?\'\\\+&%\$#\=~_\-]+))*$"); } ////// 判断文件名是否为浏览器可以直接显示的图片文件名 /// /// 文件名 ///是否可以直接显示 public static bool IsImgFilename(string filename) { filename = filename.Trim(); if(filename.EndsWith(".") || filename.IndexOf(".") == -1) { return false; } string extname = filename.Substring(filename.LastIndexOf(".") + 1).ToLower(); return (extname == "jpg" || extname == "jpeg" || extname == "png" || extname == "bmp" || extname == "gif"); } ////// 验证是否为以,号间隔的数字数组 /// /// ///public static bool IsNumericArray(string str) { if (!string.IsNullOrEmpty(str)) { return Regex.IsMatch(str, @"^[0-9,]*$"); } else return false; } }