Textbox integer validation error

Question

I want to check that client write integer in my textbox so I write my code like this :

<td class="style2">
 <asp:TextBox ID="phonetxt" runat="server" Height="22px" MaxLength="10" 
 Width="158px"></asp:TextBox>
</td>
<td>
 <asp:RequiredFieldValidator ID="PhoneRequiredFieldValidator" runat="server" ForeColor="Red" ControlToValidate="phonetxt"  ErrorMessage="...."></asp:RequiredFieldValidator>
 <asp:RegularExpressionValidator ID="RegularExpressionValidator6" runat="server" Display="None" ErrorMessage="Accepts only numbers." ControlToValidate="phonetxt" ValidationExpression=""^[0-9]*$" Text="*"></asp:RegularExpressionValidator>
</td>

But an error occured like this:

Server Error in '/' Application.
Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: The server tag is not well formed.
Source Error: Line 153: Line 154: Line 155: Line 156: Line 157:

Source File: /account.aspx Line: 155

What shold I do now? Is there any better way for check that?

fubo · Accepted Answer · 2015-08-20 07:57:21Z

1

Replace

ValidationExpression=""^[0-9]*$"

with

ValidationExpression="^[0-9]*$"

answered Aug 20, 2015 at 7:57

fubo

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2 Comments

mahdi.gh Over a year ago

thanks it's working now but it doesn't show any error when I write wrong values!!!! What's the problem?

fubo Over a year ago

a " needs to be escaped within text - so you need to write \"

Nic · Accepted Answer · 2015-08-20 08:08:25Z

0

Base on the error. You forget a opening in this

asp:RequiredFieldValidator ID="PhoneRequiredFieldValidator" runat="server" ForeColor="Red" ControlToValidate="phonetxt"  ErrorMessage="...."></asp:RequiredFieldValidator>

< you are missing this...

As for the ValidationExpression=""^[0-9]*$"
If you really need to have " put an escape on it so it become

ValidationExpression="\"^[0-9]*$"

answered Aug 20, 2015 at 8:08

Nic

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