asp IsValidEmail 证实邮箱地址函数 email

asp IsValidEmail 证实邮箱地址函数 email：

 代码如下:

'********************************************

'函数名：IsValidEmail

'作 用：检查Email地址合法性

'参 数：email ----要检查的Email地址

'返回值：True ----Email地址合法

' False ----Email地址不合法

'********************************************

Public Function IsValidEmail(Email)

Dim names, name, I, c

IsValidEmail = True

names = Split(Email, "@")

If UBound(names) <> 1 Then IsValidEmail = False: Exit Function

For Each name In names

If Len(name) <= 0 Then IsValidEmail = False:Exit Function

For I = 1 To Len(name)

c = LCase(Mid(name, I, 1))

If InStr("abcdefghijklmnopqrstuvwxyz_-.", c) <= 0 And Not IsNumeric(c) Then IsValidEmail = False:Exit Function

Next

If Left(name, 1) = "." Or Right(name, 1) = "." Then IsValidEmail = False:Exit Function

Next

If InStr(names(1), ".") <= 0 Then IsValidEmail = False:Exit Function

I = Len(names(1)) - InStrRev(names(1), ".")

If I <> 2 And I <> 3 Then IsValidEmail = False:Exit Function

If InStr(Email, "..") > 0 Then IsValidEmail = False

End Function

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