参数'username'不能包含逗号。参数名称：用户名 [英] The parameter 'username' must not contain commas. Parameter name: username

问题描述

我正在使用asp.net memebrlogin_control并获取异常参数username不能包含逗号。参数name：username。我在这个

I am using asp.net memebrlogin_control and getting exception "The parameter 'username' must not contain commas. Parameter name: username". I am using emailID as username in this

中使用emailID作为用户名如何删除此错误，我也想知道什么是不允许验证的字符列表

How can I remove this error, and I would also like to know that what is the list of characters that should be disallowed to validate email address.

推荐答案

阅读 RFC 2822 完整的电子邮件地址语法。如果您通过BNF工作，您会看到@，@@ foo.bar 是非常好的，如果不寻常。您要求的规则可以在第3.2.4节找到：

Read RFC 2822 for the complete email address syntax. If you work through the BNF, you'll see that "@,@"@foo.bar is perfectly fine, if unusual. The rule you're asking for, though, can be found at section 3.2.4:

atext           =       ALPHA / DIGIT / ; Any character except controls,
                        "!" / "#" /     ;  SP, and specials.
                        "$" / "%" /     ;  Used for atoms
                        "&" / "'" /
                        "*" / "+" /
                        "-" / "/" /
                        "=" / "?" /
                        "^" / "_" /
                        "`" / "{" /
                        "|" / "}" /
                        "~"

atom            =       [CFWS] 1*atext [CFWS]

dot-atom        =       [CFWS] dot-atom-text [CFWS]

dot-atom-text   =       1*atext *("." 1*atext)

和第3.4.1节：

addr-spec       =       local-part "@" domain

local-part      =       dot-atom / quoted-string / obs-local-part

domain          =       dot-atom / domain-literal / obs-domain

如果忽略 dot-atom c $ c> local-part 和 domain 规则，您将匹配常用或花园地址。可能您的asp.net控件不接受所有有效的RFC2822地址，因此您应该检查该文档。

If you ignore everything but dot-atom in the local-part and domain rules, you'll match the common-or-garden addresses. It's possible that your asp.net control doesn't accept all valid RFC2822 addresses, so you should really check that documentation.

您可能会执行类似于％< ;&十六进制编码gt;中将有效（或不是）电子邮件地址转换为您的控件可以接受的用户名参数的技巧。

You might do something similar to the "%<hexcode>" trick to convert a valid (or not) email address into a username argument that your control can accept.

（从O'掌握正则表达式 Reilly曾经有一个庞大的一页正则表达式（大多数是正确的）邮件地址，但它已经在第3版）。

(Mastering Regular Expressions from O'Reilly used to have a humongous one-page regex (mostly correct) for mail addresses, but it's gone in 3rd ed.)

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