ASP.NET login website creation RSS

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  velsamy

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  13 Points

  26 Posts

  ASP.NET login website creation

  Apr 09, 2012 10:37 PM|LINK

  hi all,

  This is velsamy , i have created a login  Website using ASP.NET(C#) , what is the problem means, I have to prevent the special characters in the username textbox also i have tried a way like : 

   Code Behind:

  protected void ValidateNoUrls(object sender, ServerValidateEventArgs e)
      {
         e.IsValid = !Regex.IsMatch(e.Value, @"(ht|f)tp(s?)\:\/\/[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*(:(0-9)*)*(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&%\$#_]*)?");
      }

  aspx:

  <asp:TextBox ID="TextBox1" runat="server" MaxLength="15" Width="220px" />
                      <asp:CustomValidator runat="server" OnServerValidate="ValidateNoUrls" ControlToValidate="TextBox1" ErrorMessage="Urls not allowed"/>

  While i Triying this code there is a Compiler Error Message: CS0103: The name 'Regex' does not exist in the current context.

  So anyone can help me, 

  Thanks in advance,

  Velsamy A

  • Moved by Mikesdotnetting on Apr 10, 2012 04:12 AM
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  Prashant Kum...

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  12528 Points

  2024 Posts

  Re: ASP.NET login website creation

  Apr 09, 2012 11:01 PM|LINK

  Do you have the following in your page?

  using System.Text.RegularExpressions;

  Alternatively, use the fully qualified typename System.Text.RegularExpressions.Regex

  Prashant
  • Marked as answer by Catherine Shan - MSFT on Apr 16, 2012 02:38 PM
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  ramiramilu

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  14494 Posts

  Re: ASP.NET login website creation

  Apr 10, 2012 09:13 AM|LINK

  Use RegularExpressionValidator...to validata against special chars..also if possible try to use MaskedEdit extender - http://www.asp.net/ajaxLibrary/AjaxControlToolkitSampleSite/MaskedEdit/MaskedEdit.aspx

  Thanks,

  Website
  JumpStart
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  MS.NET10

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  55 Posts

  Re: ASP.NET login website creation

  Apr 10, 2012 10:41 AM|LINK

  Hello Velsamy,

  We can prevent user from entering 'extra' characters at CLIENT side by using AJAX extenders as below..

   

  <pc1:FilteredTextBoxExtender ID="FilteredTextBoxExtender1" runat="server" Enabled="True"
                                                                      TargetControlID="textboxID" ValidChars="0123456789.">
     </pc1:FilteredTextBoxExtender>