Regex Help

Question

User1489758560 posted

Hi,

I have asp.net multi line textbox and i wanted to allow only alphanumeric, comma and space. of any other character typer will have to show the error message. Tried the below code and not working. don't know what mistake am doing. could anyone please help me in this

<asp:TextBox ID="txtCheck" runat="server" Columns="64" Rows="20"
                    TextMode="MultiLine" Wrap="true"></asp:TextBox>
                <asp:RegularExpressionValidator ID="regexpCheck" runat="server" ControlToValidate="txtCheck" ForeColor ="red"
            ValidationExpression="^[A-Za-z\\s,]*$"  ErrorMessage="*Valid characters: Alphabets,Numbers and Special Characters (,)." />

Answer 1

User475983607 posted

Hi,

I have asp.net multi line textbox and i wanted to allow only alphanumeric, comma and space. of any other character typer will have to show the error message. Tried the below code and not working. don't know what mistake am doing. could anyone please help me in this

<asp:TextBox ID="txtCheck" runat="server" Columns="64" Rows="20"
                    TextMode="MultiLine" Wrap="true"></asp:TextBox>
                <asp:RegularExpressionValidator ID="regexpCheck" runat="server" ControlToValidate="txtCheck" ForeColor ="red"
            ValidationExpression="^[A-Za-z\\s,]*$"  ErrorMessage="*Valid characters: Alphabets,Numbers and Special Characters (,)." />

What does "not working" mean?  Your RexEx does not allow numbers and you have an extra slash. 

^[A-Za-z\d\s,]*$

Online RegEx Tester.

https://regex101.com/

Answer 2

User1489758560 posted

Thanks a lot buddy. my bad did not look at the double slash. it worked for me.