ValidationGroup = insert />

它根据我的要求正常工作，但是，当我们只输入单个字符时，它不接受输入。


$ b $你能否提出建议？

 ^ [A-ZA-Z] [A-ZA-Z\s\  - ] * 

Hello,

We want the regular expression like:

First character can be only a-zA-Z
Not to allow special characters other than "space" and "hyphen(-)"

We wrote the regexp like "^[a-zA-Z][\w\s-]+"

<asp:RegularExpressionValidator ID="rev" runat="server"
                                            ControlToValidate="txtDesignation" Display="Dynamic" Text="!" ForeColor="Red"
                                            ErrorMessage="Might be Alphanumeric & First character must be a letter!" BackColor="Yellow"
                                            ValidationExpression="^[a-zA-Z]\S-$" ValidationGroup="insert"/>

It was working properly according to my requirement, but, when we enter only single character it is not accepting to enter.

Can you please give the suggestions?

" ValidationGroup="insert"/>

It was working properly according to my requirement, but, when we enter only single character it is not accepting to enter.

Can you please give the suggestions?

^[a-zA-Z][a-zA-Z\s\-]*