1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
/// <summary>
///
/// </summary>
/// <param name="email"></param>
/// <returns></returns>
public bool IsValidEmail(string email)
{
try
{
var addr = new System.Net.Mail.MailAddress(email);
return addr.Address == email;
}
catch
{
return false;
}
}
/// <summary>
/// using System.ComponentModel.DataAnnotations; 4.5 over 涂聚文(Geovin Du)标注
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public bool IsValidEmailDu(string source)
{
//https://referencesource.microsoft.com/#System.ComponentModel.DataAnnotations/DataAnnotations/EmailAddressAttribute.cs,54
return new EmailAddressAttribute().IsValid(source);
}
static Regex ValidEmailRegex = CreateValidEmailRegex();
/// <summary>
/// Taken from http://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx
/// </summary>
/// <returns></returns>
private static Regex CreateValidEmailRegex()
{
string validEmailPattern = @"^(?!\.)(""([^""\r\\]|\\[""\r\\])*""|"
+ @"([-a-z0-9!#$%&'*+/=?^_`{|}~]|(?<!\.)\.)*)(?<!\.)"
+ @"@[a-z0-9][\w\.-]*[a-z0-9]\.[a-z][a-z\.]*[a-z]$";
return new Regex(validEmailPattern, RegexOptions.IgnoreCase);
}
internal bool EmailIsValid(string emailAddress)
{
bool isValid = ValidEmailRegex.IsMatch(emailAddress);
return isValid;
}
/// <summary>
///
/// </summary>
/// <param name="email"></param>
/// <returns></returns>
public bool EmailIsValidGeovin(string email)
{
string expression = "\\w+([-+.']\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*";
if (Regex.IsMatch(email, expression))
{
if (Regex.Replace(email, expression, string.Empty).Length == 0)
{
return true;
}
}
return false;
}
/// <summary>
///
/// </summary>
/// <param name="email"></param>
/// <returns></returns>
public static bool IsValidEmailTu(this string email)
{
string pattern = @"^(?!\.)(""([^""\r\\]|\\[""\r\\])*""|" + @"([-a-z0-9!#$%&'*+/=?^_`{|}~]|(?<!\.)\.)*)(?<!\.)" + @"@[a-z0-9][\w\.-]*[a-z0-9]\.[a-z][a-z\.]*[a-z]$";
var regex = new Regex(pattern, RegexOptions.IgnoreCase);
return regex.IsMatch(email);
}
/// <summary>
///
/// </summary>
/// <param name="emailAddress"></param>
/// <returns></returns>
public static bool IsValidEmailAddress(string emailAddress)
{
bool MethodResult = false;
try
{
System.Net.Mail.MailAddress m = new System.Net.Mail.MailAddress(emailAddress);
MethodResult = m.Address == emailAddress;
}
catch //(Exception ex)
{
//ex.HandleException();https://*.com/questions/1365407/c-sharp-code-to-validate-email-address
}
return MethodResult;
}
/// <summary>
///
/// </summary>
/// <param name="InputEmail"></param>
/// <returns></returns>
public static bool IsValidEmailId(string InputEmail)
{
Regex regex = new Regex(@"^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$");
Match match = regex.Match(InputEmail);
if (match.Success)
return true;
else
return false;
}
/// <summary>
///
/// </summary>
/// <param name="emailAddress"></param>
/// <returns></returns>
public bool ValidateEmail(string emailAddress)
{
string regexPattern = @"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$";
Match matches = Regex.Match(emailAddress, regexPattern);
return matches.Success;
}
哲学管理(学)人vb.net教程生, 文学艺术生活, 自动(计算机学)c#教程物理(学)工作, 生物(学)化学逆境, 历史(学)测绘(学)时间, 经济(学)数学金钱(理财), 心理(学)医学情绪, 诗词美容情感, 美学建筑(学)家园, 解构建构(分析)整合学习, 智商情python基础教程商(IQ、EQ)运筹(学)成功.—Geovin Du(涂聚文)