public class Validate
{
private static Regex RegNumber = new Regex("^[0-9]+$");
private static Regex RegNumberSign = new Regex("^[+-]?[0-9]+$");
private static Regex RegDecimal = new Regex("^[0-9]+[.]?[0-9]+$");
private static Regex RegDecimalSign = new Regex("^[+-]?[0-9]+[.]?[0-9]+$"); //等价于^[+-]?\d+[.]?\d+$
private static Regex RegEmail = new Regex(@"^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$");//w 英文字母或数字的字符串，和 [a-zA-Z0-9] 语法一样
private static Regex RegCHZN = new Regex("[\u4e00-\u9fa5]");
#region 用户名密码格式
/// <summary>
/// 返回字符串真实长度, 1个汉字长度为2
/// </summary>
/// <returns>字符长度</returns>
public static int GetStringLength(string stringValue)
{
return Encoding.Default.GetBytes(stringValue).Length;
}
/// <summary>
/// 检测用户名格式是否有效
/// </summary>
/// <param name="userName"></param>
/// <returns></returns>
public static bool IsValidUserName(string userName)
{
int userNameLength = GetStringLength(userName);
if (userNameLength >= 4 && userNameLength <= 20 && Regex.IsMatch(userName, @"^([\u4e00-\u9fa5A-Za-z_0-9]{0,})$"))
{ // 判断用户名的长度（4-20个字符）及内容（只能是汉字、字母、下划线、数字）是否合法
return true;
}
else
{
return false;
}
}
/// <summary>
/// 密码有效性
/// </summary>
/// <param name="password"></param>
/// <returns></returns>
public static bool IsValidPassword(string password)
{
return Regex.IsMatch(password, @"^[A-Za-z_0-9]{6,16}$");
}
#endregion
#region 数字字符串检查
/// <summary>
/// int有效性
/// </summary>
/// <param name="val"></param>
/// <returns></returns>
static public bool IsValidInt(string val)
{
return Regex.IsMatch(val, @"^[1-9]\d*\.?[0]*$");
}
/// <summary>
/// 是否数字字符串
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsNumber(string inputData)
{
Match m = RegNumber.Match(inputData);
return m.Success;
}
/// <summary>
/// 是否数字字符串 可带正负号
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsNumberSign(string inputData)
{
Match m = RegNumberSign.Match(inputData);
return m.Success;
}
/// <summary>
/// 是否是浮点数
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsDecimalPrecise(string inputData)
{
Match m = RegDecimal.Match(inputData);
return m.Success;
}
/// <summary>
/// 是否是浮点数 可带正负号
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsDecimal(string inputData)
{
try {
Convert.ToDecimal(inputData);
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 是否是浮点数 可带正负号
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool Isint(string inputData)
{
try
{
Convert.ToInt64(inputData);
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 是否是浮点数 可带正负号
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsDecimalSign(string inputData)
{
Match m = RegDecimalSign.Match(inputData);
return m.Success;
}
#endregion
#region 中文检测
/// <summary>
/// 检测是否有中文字符
/// </summary>
/// <param name="inputData"></param>
/// <returns></returns>
public static bool IsHasCHZN(string inputData)
{
Match m = RegCHZN.Match(inputData);
return m.Success;
}
/// <summary>
/// 检测含有中文字符串的实际长度
/// </summary>
/// <param name="str">字符串</param>
public static int GetCHZNLength(string inputData)
{
System.Text.ASCIIEncoding n = new System.Text.ASCIIEncoding();
byte[] bytes = n.GetBytes(inputData);
int length = 0; // l 为字符串之实际长度
for (int i = 0; i <= bytes.Length - 1; i++)
{
if (bytes[i] == 63) //判断是否为汉字或全脚符号
{
length++;
}
length++;
}
return length;
}
#endregion
#region 常用格式
/// <summary>
/// 验证身份证是否合法 15 和 18位两种
/// </summary>
/// <param name="idCard">要验证的身份证</param>
public static bool IsIdCard(string idCard)
{
if (string.IsNullOrEmpty(idCard))
{
return false;
}
if (idCard.Length == 15)
{
return Regex.IsMatch(idCard, @"^[1-9]\d{7}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}$");
}
else if (idCard.Length == 18)
{
return Regex.IsMatch(idCard, @"^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])((\d{4})|\d{3}[A-Z])$", RegexOptions.IgnoreCase);
}
else
{
return false;
}
}
/// <summary>
/// 是否是邮件地址
/// </summary>
/// <param name="inputData">输入字符串</param>
/// <returns></returns>
public static bool IsEmail(string inputData)
{
Match m = RegEmail.Match(inputData);
return m.Success;
}
/// <summary>
/// 邮编有效性
/// </summary>
/// <param name="zip"></param>
/// <returns></returns>
public static bool IsValidZip(string zip)
{
Regex rx = new Regex(@"^\d{6}$", RegexOptions.None);
Match m = rx.Match(zip);
return m.Success;
}
/// <summary>
/// 固定电话有效性
/// </summary>
/// <param name="phone"></param>
/// <returns></returns>
public static bool IsValidPhone(string phone)
{
Regex rx = new Regex(@"^(\(\d{3,4}\)|\d{3,4}-)?\d{7,8}$", RegexOptions.None);
Match m = rx.Match(phone);
return m.Success;
}
/// <summary>
/// 手机有效性
/// </summary>
/// <param name="strMobile"></param>
/// <returns></returns>
public static bool IsValidMobile(string mobile)
{
Regex rx = new Regex(@"^(13|15|17|18|19)\d{9}$", RegexOptions.None);
Match m = rx.Match(mobile);
return m.Success;
}
/// <summary>
/// 电话有效性（固话和手机 ）
/// </summary>
/// <param name="strVla"></param>
/// <returns></returns>
public static bool IsValidPhoneAndMobile(string number)
{
Regex rx = new Regex(@"^(\(\d{3,4}\)|\d{3,4}-)?\d{7,8}$|^(13|15)\d{9}$", RegexOptions.None);
Match m = rx.Match(number);
return m.Success;
}
/// <summary>
/// Url有效性
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
static public bool IsValidURL(string url)
{
return Regex.IsMatch(url, @"^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\‘/\\\+&%\$#\=~])*[^\.\,\)\(\s]$");
}
/// <summary>
/// IP有效性
/// </summary>
/// <param name="ip"></param>
/// <returns></returns>
public static bool IsValidIP(string ip)
{
return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
}
/// <summary>
/// domain 有效性
/// </summary>
/// <param name="host">域名</param>
/// <returns></returns>
public static bool IsValidDomain(string host)
{
Regex r = new Regex(@"^\d+$");
if (host.IndexOf(".") == -1)
{
return false;
}
return r.IsMatch(host.Replace(".", string.Empty)) ? false : true;
}
/// <summary>
/// 判断是否为base64字符串
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsBase64String(string str)
{
return Regex.IsMatch(str, @"[A-Za-z0-9\+\/\=]");
}
/// <summary>
/// 验证字符串是否是GUID
/// </summary>
/// <param name="guid">字符串</param>
/// <returns></returns>
public static bool IsGuid(string guid)
{
if (string.IsNullOrEmpty(guid))
return false;
return Regex.IsMatch(guid, "[A-F0-9]{8}(-[A-F0-9]{4}){3}-[A-F0-9]{12}|[A-F0-9]{32}", RegexOptions.IgnoreCase);
}
#endregion
#region 日期检查
/// <summary>
/// 判断输入的字符是否为日期
/// </summary>
/// <param name="strValue"></param>
/// <returns></returns>
public static bool IsDate(string strValue)
{
return Regex.IsMatch(strValue, @"^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))");
}
/// <summary>
/// 判断输入的字符是否为日期,如2004-07-12 14:25|||1900-01-01 00:00|||9999-12-31 23:59
/// </summary>
/// <param name="strValue"></param>
/// <returns></returns>
public static bool IsDateHourMinute(string strValue)
{
return Regex.IsMatch(strValue, @"^(19[0-9]{2}|[2-9][0-9]{3})-((0(1|3|5|7|8)|10|12)-(0[1-9]|1[0-9]|2[0-9]|3[0-1])|(0(4|6|9)|11)-(0[1-9]|1[0-9]|2[0-9]|30)|(02)-(0[1-9]|1[0-9]|2[0-9]))\x20(0[0-9]|1[0-9]|2[0-3])(:[0-5][0-9]){1}$");
}
public static bool isDataTime(string datetime)
{
try
{
Convert.ToDateTime(datetime);
return true;
}
catch {
return false;
}
return false;
}
#endregion
#region 其他
/// <summary>
/// 检查字符串最大长度，返回指定长度的串
/// </summary>
/// <param name="sqlInput">输入字符串</param>
/// <param name="maxLength">最大长度</param>
/// <returns></returns>
public static string CheckMathLength(string inputData, int maxLength)
{
if (inputData != null && inputData != string.Empty)
{
inputData = inputData.Trim();
if (inputData.Length > maxLength)//按最大长度截取字符串
{
inputData = inputData.Substring(0, maxLength);
}
}
return inputData;
}
/// <summary>
/// 转换成 HTML code
/// </summary>
/// <param name="str">string</param>
/// <returns>string</returns>
public static string Encode(string str)
{
str = str.Replace("&", "&");
str = str.Replace("‘", "‘‘");
str = str.Replace("\"", """);
str = str.Replace(" ", " ");
str = str.Replace("<", "<");
str = str.Replace(">", ">");
str = str.Replace("\n", "<br>");
return str;
}
/// <summary>
///解析html成 普通文本
/// </summary>
/// <param name="str">string</param>
/// <returns>string</returns>
public static string Decode(string str)
{
str = str.Replace("<br>", "\n");
str = str.Replace(">", ">");
str = str.Replace("<", "<");
str = str.Replace(" ", " ");
str = str.Replace(""", "\"");
return str;
}
/// <summary>
/// 转换日期
/// </summary>
/// <returns></returns>
public static DateTime? ConvertDate(string date)
{
try
{
return Convert.ToDateTime(date);
}
catch
{
return null;
}
}
#endregion
#region 单位换算
/// <summary>
/// 毫米mm、厘米cm、分米dm、米m，长度单位之间的转换
/// 1米(m)= 10分米（dm)
/// 1分米（dm)=10厘米(cm)
/// 1厘米（cm)=10毫米(mm)
/// </summary>
/// <param name="Number">需转换的数值</param>
/// <param name="beforeUnit">转换前单位[mm、cm、dm、m]</param>
/// <param name="afterUnit">转换后单位[mm、cm、dm、m]</param>
/// <returns></returns>
public static decimal LengthUnitConversion(string Number, string beforeUnit, string afterUnit)
{
switch (afterUnit.ToLower())
{
case "mm": //转毫米
#region 转毫米
switch (beforeUnit.ToLower())
{
case "cm":
return Convert.ToDecimal(Number) * 10; //1厘米=10毫米
case "dm":
return Convert.ToDecimal(Number) * 100; //1分米=100毫米
case "m":
return Convert.ToDecimal(Number) * 1000; //1米=100毫米
default:
return Convert.ToDecimal(Number);
}
#endregion
case "cm"://转厘米
#region 转厘米
switch (beforeUnit.ToLower())
{
case "mm":
return Convert.ToDecimal(Number) / 10; //1毫米=0.1厘米
case "dm":
return Convert.ToDecimal(Number) * 10; //1分米=10厘米
case "m":
return Convert.ToDecimal(Number) * 100; //1米=100厘米
default:
return Convert.ToDecimal(Number);
}
#endregion
case "dm"://转分米
#region 转分米
switch (beforeUnit.ToLower())
{
case "mm":
return Convert.ToDecimal(Number) / 100; //1毫米=0.01分米
case "cm":
return Convert.ToDecimal(Number) / 10;//1厘米=0.1分米
case "m":
return Convert.ToDecimal(Number) * 10; //1米=10分米
default:
return Convert.ToDecimal(Number);
}
#endregion
case "m"://转米
#region 转米
switch (beforeUnit.ToLower())
{
case "mm":
return Convert.ToDecimal(Number) / 1000; //1毫米=0.001米
case "cm":
return Convert.ToDecimal(Number) / 100;//1厘米=0.01米
case "dm":
return Convert.ToDecimal(Number) / 10; //1分米=0.1米
default:
return Convert.ToDecimal(Number);
}
#endregion
default:
return Convert.ToDecimal(Number);
}
}
/// <summary>
/// 立方毫米mm3、立方厘米cm3、立方分米dm3、立方米m3，体积单位之间的转换
/// 1立方米(m3)= 1000升(L)= 1000立方分米（dm3)
/// 1立方分米（dm3)=1000立方厘米(cm3)
/// 1立方厘米（cm3)=1000立方毫米(mm3)
/// </summary>
/// <param name="Number">需转换的数值</param>
/// <param name="beforeUnit">转换前单位[mm、cm、dm、m]</param>
/// <param name="afterUnit">转换后单位[mm、cm、dm、m]</param>
/// <returns></returns>
public static decimal VolumeUnitConversion(string Number, string beforeUnit, string afterUnit)
{
switch (afterUnit.ToLower())
{
case "mm": //转立方毫米
#region 转立方毫米
switch (beforeUnit.ToLower())
{
case "cm":
return Convert.ToDecimal(Number) * 1000; //1立方厘米=1000立方毫米
case "dm":
return Convert.ToDecimal(Number) * 1000000; //1立方分米=1000000立方毫米
case "m":
return Convert.ToDecimal(Number) * 1000000000; //1立方米=1000000000毫米
default:
return Convert.ToDecimal(Number);
}
#endregion
case "cm"://转立方厘米
#region 转立方厘米
switch (beforeUnit.ToLower())
{
case "mm":
return Convert.ToDecimal(Number) / 1000; //1立方毫米=0.001立方厘米
case "dm":
return Convert.ToDecimal(Number) * 1000; //1立方分米=1000立方厘米
case "m":
return Convert.ToDecimal(Number) * 1000000; //1立方米=1000000立方厘米
default:
return Convert.ToDecimal(Number);
}
#endregion
case "dm"://转立方分米
#region 转立方分米
switch (beforeUnit.ToLower())
{
case "mm":
return Convert.ToDecimal(Number) / 1000000; //1立方毫米=0.000001立方分米
case "cm":
return Convert.ToDecimal(Number) / 1000;//1立方厘米=0.001立方分米
case "m":
return Convert.ToDecimal(Number) * 1000; //1立方米=1000立方分米
default:
return Convert.ToDecimal(Number);
}
#endregion
case "m"://转立方米
#region 转立方米
switch (beforeUnit.ToLower())
{
case "mm":
return Convert.ToDecimal(Number) / 1000000000; //1立方毫米=0.000000001米
case "cm":
return Convert.ToDecimal(Number) / 1000000;//1立方厘米=0.0000001立方米
case "dm":
return Convert.ToDecimal(Number) / 1000; //1立方分米=0.001立方米
default:
return Convert.ToDecimal(Number);
}
#endregion
default:
return Convert.ToDecimal(Number);
}
}
/// <summary>
/// 吨t、千克kg、克g、 重量单位之间的转换
/// 1吨(t)= 1000千克（kg)
/// 1千克（kg)=1000克(g)
/// </summary>
/// <param name="Number">需转换的数值</param>
/// <param name="beforeUnit">转换前单位[t、kg、g]</param>
/// <param name="afterUnit">转换后单位[t、kg、g]</param>
/// <returns></returns>
public static decimal WeightUnitConversion(string Number, string beforeUnit, string afterUnit)
{
switch (afterUnit.ToLower())
{
case "g": //转克
#region 转克
switch (beforeUnit.ToLower())
{
case "kg":
return Convert.ToDecimal(Number) * 1000; //1千克=1000克
case "t":
return Convert.ToDecimal(Number) * 1000000; //1吨=1000000克
default:
return Convert.ToDecimal(Number);
}
#endregion
case "kg"://转千克
#region 转千克
switch (beforeUnit.ToLower())
{
case "g":
return Convert.ToDecimal(Number) / 1000; //1克=0.001千克
case "t":
return Convert.ToDecimal(Number) * 1000; //1吨=1000千克
default:
return Convert.ToDecimal(Number);
}
#endregion
case "t"://转吨
#region 转吨
switch (beforeUnit.ToLower())
{
case "g":
return Convert.ToDecimal(Number) / 1000000; //1克=0.000001千克
case "kg":
return Convert.ToDecimal(Number) / 1000;//1千克=0.001吨
default:
return Convert.ToDecimal(Number);
}
#endregion
default:
return Convert.ToDecimal(Number);
}
}
#endregion
#region 时间格式转与Unix时间戳值转换
/// <summary>
/// 将c# DateTime时间格式转换为Unix时间戳格式
/// </summary>
/// <param name="time">时间</param>
/// <returns>long</returns>
public static long ConvertDataTimeLong(DateTime time)
{
//double intResult = 0;
System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0));
//intResult = (time- startTime).TotalMilliseconds;
long t = (time.Ticks - startTime.Ticks) / 10000; //除10000调整为13位
return t;
}
/// <summary>
/// 将Unix时间戳转换为DateTime类型时间
/// </summary>
/// <param name="d">long 型数字</param>
/// <returns>DateTime</returns>
public static DateTime ConvertLongDateTime(long d)
{
System.DateTime time = System.DateTime.MinValue;
System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
time = startTime.AddMilliseconds(d);
return time;
}
#endregion
}
原文：http://www.cnblogs.com/badboys/p/7582069.html