ASP.NET Tutorial/Ajax/FilteredTextBox

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Using the FilteredTextBox Control

   <source lang="csharp">

<%@ Page Language="C#" %> <%@ Register TagPrefix="ajax" Namespace="AjaxControlToolkit" 

Assembly="AjaxControlToolkit" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> 

   <title>Show Filtered TextBox</title>

</head> <body> 

   <form id="form1" runat="server">

       <asp:ScriptManager ID="ScriptManager1" runat="server" />
       <asp:Label
           id="lblNumeric"
           Text="Enter a Number:"
           AssociatedControlID="txtNumeric"
           Runat="server" />
       

       <asp:TextBox
           id="txtNumeric"
           Runat="server" />
       <ajax:FilteredTextBoxExtender
           id="fte1"
           TargetControlID="txtNumeric"
           FilterType="Numbers"
           Runat="server" />
       


       <asp:Label
           id="lblProductCode"
           Text="Enter a Product Code:"
           AssociatedControlID="txtProductCode"
           Runat="server" />
       

       <asp:TextBox
           id="txtProductCode"
           Runat="server" />
       <ajax:FilteredTextBoxExtender
           id="fte2"
           TargetControlID="txtProductCode"
           FilterType="LowercaseLetters,Custom"
           FilterMode="ValidChars"
           ValidChars="_!"
           Runat="server" />
       

       (A product code can contain only lower-case characters,
       underscores, exclamation marks, and no spaces)

   </form>

</body> </html></source>

Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/Ajax/FilteredTextBox&oldid=3030»