RegularExpressionValidator Class
Provides control capability to validate that another control's value matches a provided regular expression.
Assembly: System.Web.Mobile (in System.Web.Mobile.dll)
'Declaration <AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level := AspNetHostingPermissionLevel.Minimal)> _ <AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _ Public Class RegularExpressionValidator _ Inherits BaseValidator 'Usage Dim instance As RegularExpressionValidator
<mobile:RegularExpressionValidator />
This class behaves identically to the ASP.NET System.Web.UI.WebControls.RegularExpressionValidator control.
By default, Command controls on a form raise validator controls on the form to perform validation when the form is submitted to the server. To disable automatic validation, set the CausesValidation property on the Command to false.
The following example shows how you can add regular expression properties, such as the ValidationExpression and Text properties, programmatically during a page load.
Security Note: |
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This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
<%@ Page Language="VB" Inherits="System.Web.UI.MobileControls.MobilePage" %> <%@ Register TagPrefix="mobile" Namespace="System.Web.UI.MobileControls" Assembly="System.Web.Mobile" %> <script runat="server"> Private Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Const uNameExpr As String = "^[a-zA-Z](.{1,9})$" Const phoneExpr As String = _ "((\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}" ' Define validation expressions. RegExprVal1.ValidationExpression = uNameExpr RegExprVal2.ValidationExpression = phoneExpr ReqFldVal1.Text = "User name is required" RegExprVal1.Text = "Must be between 2 to 10 characters" RegExprVal2.Text = "Please provide a valid number: (425) 555-0187" ' ErrorMessages appear in ValidationSummary. RegExprVal1.ErrorMessage = "Incorrect UserName format. Name" & _ " can be 2 to 10 characters long" ReqFldVal1.ErrorMessage = "User name required" RegExprVal2.ErrorMessage = _ "Please provide a valid number: (000) 000-0000" End Sub Private Sub OnCmdClick(ByVal sender As Object, ByVal e As EventArgs) If (Page.IsValid) Then ActiveForm = Form2 End If End Sub </script> <html xmlns="http:'www.w3.org/1999/xhtml" > <body> <mobile:Form runat="server" id="Form1" > <mobile:Label runat="server" id="Label1" Text="Your information" StyleReference="title" /> <mobile:Label runat="server" id="Label2" Text="User Name (required)" /> <mobile:Textbox runat="server" id="TextBox1"/> <mobile:RequiredFieldValidator runat="server" id="ReqFldVal1" ControlToValidate="TextBox1" /> <mobile:RegularExpressionValidator runat="server" id="RegExprVal1" ControlToValidate="TextBox1" /> <mobile:Label runat="server" id="Label3" Text="Phone" /> <mobile:Textbox runat="server" id="TextBox2"/> <mobile:RegularExpressionValidator runat="server" id="RegExprVal2" ControlToValidate="TextBox2" /> <mobile:ValidationSummary ID="ValidationSummary1" FormToValidate="Form1" HeaderText="Error Summary:" runat="server" /> <mobile:Command runat="server" id="Command1" Text="Submit" OnClick="OnCmdClick"/> </mobile:Form> <mobile:Form id="Form2" runat="server" > <mobile:Label ID="Label4" runat="server" Text="Thank You." /> </mobile:Form> </body> </html>
- AspNetHostingPermission
for operating in a hosted environment. Demand value: LinkDemand; Permission value: Minimal.
- AspNetHostingPermission
for operating in a hosted environment. Demand value: InheritanceDemand; Permission value: Minimal.
System.Web.UI.Control
System.Web.UI.MobileControls.MobileControl
System.Web.UI.MobileControls.TextControl
System.Web.UI.MobileControls.BaseValidator
System.Web.UI.MobileControls.RegularExpressionValidator
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Security Note: