CustomValidator.ControlPropertiesValid Method ()
.NET Framework (current version)
This API supports the product infrastructure and is not intended to be used directly from your code.
Checks the properties of the control for valid values.
Assembly: System.Web (in System.Web.dll)
The following code example demonstrates how to override the ControlPropertiesValid method in a custom server control so that it always returns the value of the visible property, as long as the ControlToValidate property of the CustomValidator control is on the page and contains validation properties.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet" Assembly="Samples.AspNet.CS" %> <%@ Page Language="C#" AutoEventWireup="True" %> <!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> <title>Custom CustomValidator - ControlPropertiesValid - C# Example</title> <script runat="server"> void CustomValidator1_ServerValidate(Object source, ServerValidateEventArgs args) { try { // Test whether the value entered into the text box is even. int i = int.Parse(args.Value); args.IsValid = ((i%2) == 0); } catch(Exception ex) { args.IsValid = false; } } </script> </head> <body> <form id="Form1" method="post" runat="server"> <h3>Custom CustomValidator - ControlPropertiesValid - C# Example</h3> <asp:Label id="Label1" runat="server" Text="Enter an even number:" AssociatedControlID="TextBox1" /><br /> <asp:TextBox id="TextBox1" runat="server" /> <aspSample:CustomCustomValidatorControlPropertiesValid id="Customvalidator1" runat="server" ControlToValidate="TextBox1" Display="Static" ErrorMessage="Not an even number!" OnServerValidate="CustomValidator1_ServerValidate" /><br /><br /> <asp:Button id="Button1" runat="server" Text="Validate" /> </form> </body> </html>
using System.Web; using System.Security.Permissions; namespace Samples.AspNet { [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)] public sealed class CustomCustomValidatorControlPropertiesValid : System.Web.UI.WebControls.CustomValidator { protected override bool ControlPropertiesValid() { string controlToValidate = this.ControlToValidate; // Determine whether the ControlToValidate is on the page // and contains a valid validation property. if (controlToValidate.Length > 0) { base.CheckControlValidationProperty(controlToValidate, "ControlToValidate"); } // If the control is visible, then control is valid // and is ready for validation. System.Web.UI.Control control = this.FindControl(controlToValidate); return control.Visible; } } }
.NET Framework
Available since 1.1
Available since 1.1
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