对正则表达式不熟悉，记录几个从别处拿来验证过的表达式，日期、数字、email、网址验证

/// <summary>

/// 正则表达式判断是否为数字

/// </summary>

/// <param name="strNumber"></param>

/// <returns></returns>

public static bool IsNumber(string strNumber)

{

//^[-+]?[1-9]\d*\.?[0]*$

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>

/// 正则表达式判断是否为日期

/// 验证格式：

/// YYYY-MM

/// YYYY-MM(M)-DD(M)

/// YYYYMMDD

/// </summary>

/// <param name="date"></param>

/// <returns></returns>

public static bool IsDate(string date)

{

//(([0-9]{4}-)([0-9]{1,2}-)[0-9]{1,2})

Regex ymPattern = new Regex(@"^\d{4}-?(?:0[1-9]|1[0-2])$");

Regex yyyyMMdd = new Regex(@"^((\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]))))))"); //日期部分

return !ymPattern.IsMatch(date) &&

yyyyMMdd.IsMatch(date);

}

/// <summary>

/// 正则表达式判断是否为日期

/// 验证格式：

/// YYYY-MM(M)-DD(M) HH:MM

/// YYYYMMDD HH:MM

/// </summary>

/// <param name="date"></param>

/// <returns></returns>

public static bool IsDateTime(string date)

{

string regex = @"^((\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]))))))"; //日期部分

regex += @"(\s(((0?[0-9])|([1-2][0-3]))\:([0-5]?[0-9])((\s)|(\:([0-5]?[0-9])))))?$"; //时间部分

System.Text.RegularExpressions.RegexOptions options = ((System.Text.RegularExpressions.RegexOptions.IgnorePatternWhitespace | System.Text.RegularExpressions.RegexOptions.Multiline) | System.Text.RegularExpressions.RegexOptions.IgnoreCase);

System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(regex, options);

return reg.IsMatch(date);

}

public static bool IsEmail(string mail)

{

Regex reg = new Regex(@"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");

return reg.IsMatch(mail);

}

/// <summary>

/// 正则表达式是否为网址，验证格式：

/// wwww.xxx.xxx

/// xxx.xxx.xxx

/// http://www.xxx.xxx

/// http://xxx.xxx.xxx

/// </summary>

/// <param name="uri"></param>

/// <returns></returns>

public static bool IsUri(string uri)

{

Regex reg = new Regex(@"^(((ht|f)tp(s?))\://)?((([a-zA-Z0-9_\-]{2,}\.)+[a-zA-Z]{2,})|((?:(?:25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)(?(\.?\d)\.)){4}))(:[a-zA-Z0-9]+)?(/[a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~]*)?$");

return reg.IsMatch(uri);

}

posted on 2008-06-19 10:26 我是蚂蚁阅读(686) 评论(1) 编辑收藏所属分类: 乱弹