无法获取asp.net定期EX pression验证为空白密码的工作？ [英] Can't get asp.net regular expression validator to work for blank passwords?

问题描述

我不希望允许空白密码，但如果我离开文本框为空，从常规的前pression text属性显示不出来，直到我输入至少1个字符。我怎么让它不要有空白密码？我试图使用的+号，而不是*符号，但它仍然没有奏效。

 ＆LT; ASP：RegularEx pressionValidator
                                的ControlToValidate =txtPassword
                                显示=动态
                                =服务器
                                文本=无效
                                ValidationEx pression =^（？=。* \\ D {1}）（？=。* [一个-ZA-Z] {2}）。{7，} $
                                的ValidationGroup =UserRegistrationValidation＆GT;
＆LT; / ASP：RegularEx pressionValidator＆GT;
 

解决方案

一个RegularEx pressionValidator犯规验证由设计空文本。您还需要一个RequiredFieldValidator或看看下面的链接：
<一href=\"http://stackoverflow.com/questions/1085464/regularex$p$pssionvalidator-not-firing-on-white-space-entry\">http://stackoverflow.com/questions/1085464/regularex$p$pssionvalidator-not-firing-on-white-space-entry

I do not want to allow blank passwords, but if I leave the textbox blank, the text property from the regular expression does not show up until I enter at least 1 character. How do I allow it not to have a blank password? I tried using the + sign instead of the * sign, but it still did not work.

<asp:RegularExpressionValidator 
                                ControlToValidate="txtPassword" 
                                Display="Dynamic"
                                runat="server" 
                                Text="Invalid" 
                                ValidationExpression="^(?=.*\d{1})(?=.*[a-zA-Z]{2}).{7,}$"
                                ValidationGroup="UserRegistrationValidation">
</asp:RegularExpressionValidator>

解决方案

A RegularExpressionValidator doesnt validate empty text by design. You need also a RequiredFieldValidator or have a look at the following link: http://stackoverflow.com/questions/1085464/regularexpressionvalidator-not-firing-on-white-space-entry

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