【轉】http://blog.csdn.net/dingxiaowei2013/article/details/8571757
1 using System;
2 using System.Text.RegularExpressions;
3 using System.NET;
4
5 namespace 正則表達式檢測字符串
6 {
7 class Program
8 {
9 static void Main(string[] args)
10 {
11
12 Console.WriteLine("請輸入字符串：");
13 string s = Console.ReadLine();
14 if (GF_IsOk.IsExistHanZi(s))
15 {
16 Console.Write("包含漢字");
17 }
18 else
19 {
20 Console.Write("不包含漢字");
21 }
22 Console.ReadLine();
23 }
24 }
25 //判斷部分
26 public class GF_IsOk
27 {
28 /// <summary>
29 /// 判讀是否是IP地址
30 /// </summary>
31 /// <param name="in_str"></param>
32 /// <returns></returns>
33 public static bool IsIPStr(string in_str)
34 {
35 IPAddress ip;
36 return IPAddress.TryParse(in_str, out ip);
37 }
38
39 /// <summary>
40 /// 判斷是否是數字
41 /// </summary>
42 /// <param name="strNumber"></param>
43 /// <returns></returns>
44 public static bool IsNumber(string strNumber)
45 {
46
47 Regex objNotNumberPattern = new Regex("[^0-9.-]");
48 Regex objTwoDotPattern = new Regex("[0-9]*[.][0-9]*[.][0-9]*");
49 Regex objTwoMinusPattern = new Regex("[0-9]*[-][0-9]*[-][0-9]*");
50 String strValidRealPattern = "^([-]|[.]|[-.]|[0-9])[0-9]*[.]*[0-9]+$";
51 String strValidIntegerPattern = "^([-]|[0-9])[0-9]*$";
52 Regex objNumberPattern = new Regex("(" + strValidRealPattern + ")|(" + strValidIntegerPattern + ")");
53 return !objNotNumberPattern.IsMatch(strNumber) &&
54 !objTwoDotPattern.IsMatch(strNumber) &&
55 !objTwoMinusPattern.IsMatch(strNumber) &&
56 objNumberPattern.IsMatch(strNumber);
57 }
58
59 /// <summary>
60 /// 判斷是否是日期字符串
61 /// </summary>
62 /// <param name="in_str"></param>
63 /// <returns></returns>
64 public static bool IsDateStr_yyyymmdd(string in_str)
65 {
66 if (in_str == "") return true;
67 if (in_str.Length != 8) return false;
68 return IsDateStr(in_str);
69 }
70
71 /// <summary>
72 /// 判斷是否是日期字符串
73 /// </summary>
74 /// <param name="in_str"></param>
75 /// <returns></returns>
76 public static bool IsDateStr(string in_str)
77 {
78 if (in_str == "") return true;
79 if (in_str.Length == 8)
80 in_str = in_str.Substring(0, 4) + "-" + in_str.Substring(4, 2) + "-" + in_str.Substring(6, 2);
81 DateTime dtDate;
82 bool bValid = true;
83 try
84 {
85 dtDate = DateTime.Parse(in_str);
86 }
87 catch (FormatException)
88 {
89 // 如果解析方法失敗則表示不是日期性數據
90 bValid = false;
91 }
92 return bValid;
93 }
94
95 /// <summary>
96 /// 判斷字符串中是否包含漢字,有返回true 否則為false
97 /// </summary>
98 /// <param name="str"></param>
99 /// <returns></returns>
100 public static bool IsExistHanZi(string str)
101 {
102 Regex reg = new Regex(@"[\u4e00-\u9fa5]");//正則表達式
103 if (reg.IsMatch(str))
104 {
105 return true;
106 }
107 else
108 {
109 return false;
110 }
111 }
112
113
114 /// <summary>
115 /// 字段串是否為Null或為""(空)
116 /// </summary>
117 /// <param name="str"></param>
118 /// <returns></returns>
119 public static bool IsStrNullOrEmpty(string str)
120 {
121 if (str == null || str.Trim() == string.Empty)
122 return true;
123
124 return false;
125 }
126
127 /// <summary>
128 /// 返回文件是否存在
129 /// </summary>
130 /// <param name="filename">文件名</param>
131 /// <returns>是否存在</returns>
132 public static bool IsFileExists(string filename)
133 {
134 return System.IO.File.Exists(filename);
135 }
136
137
138 /// <summary>
139 /// 檢測是否符合email格式
140 /// </summary>
141 /// <param name="strEmail">要判斷的email字符串</param>
142 /// <returns>判斷結果</returns>
143 public static bool IsValidEmail(string strEmail)
144 {
145 return Regex.IsMatch(strEmail, @"^[\w\.]+([-]\w+)*@[A-Za-z0-9-_]+[\.][A-Za-z0-9-_]");
146 }
147
148 public static bool IsValidDoEmail(string strEmail)
149 {
150 return Regex.IsMatch(strEmail, @"^@((
151
152 [0−9]1,3\.[0−9]1,3\.[0−9]1,3\.)|(([\w−]+\.)+))([a−zA−Z]2,4|[0−9]1,3)(
153 ?)$");
154 }
155 /// <summary>
156 /// 檢測是否是正確的Url
157 /// </summary>
158 /// <param name="strUrl">要驗證的Url</param>
159 /// <returns>判斷結果</returns>
160 public static bool IsURL(string strUrl)
161 {
162 return Regex.IsMatch(strUrl, @"^(http|https)\://([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\?\'\\\+&%\$#\=~_\-]+))*$");
163 }
164
165
166
167 /// <summary>
168 /// 判斷是否為base64字符串
169 /// </summary>
170 /// <param name="str"></param>
171 /// <returns></returns>
172 public static bool IsBase64String(string str)
173 {
174 //A-Z, a-z, 0-9, +, /, =
175 return Regex.IsMatch(str, @"[A-Za-z0-9\+\/\=]");
176 }
177
178 /// <summary>
179 /// 檢測是否有Sql危險字符
180 /// </summary>
181 /// <param name="str">要判斷字符串</param>
182 /// <returns>判斷結果</returns>
183 public static bool IsSafeSqlString(string str)
184 {
185 return !Regex.IsMatch(str, @"[-|;|,|\/|||
186
187 |
188 |\}|\{|%|@|\*|!|\']");
189 }
190 }
191 }
