CompareValidator.ControlPropertiesValid Method

This method supports the .NET Framework infrastructure and is not intended to be used directly from your code.

Checks the properties of the control for valid values.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

protected:
virtual bool ControlPropertiesValid () override
protected boolean ControlPropertiesValid ()
protected override function ControlPropertiesValid () : boolean
Not applicable.

Return Value

true if the control properties are valid; otherwise, false.

Exception typeCondition

HttpException

ControlToValidate and ControlToCompare have the same ID.

HttpException

The value of a target property cannot be converted to the expected Type.

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 ControlToCompare property of the CompareValidator control is on the page and contains validation properties.

Security noteSecurity Note:

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 (Visual Studio).

No code example is currently available or this language may not be supported.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page language="VJ#" %>
<!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 CompareValidator - ControlPropertiesValid - VJ# Example</title>
    <script runat="server">
    void Page_Load(Object sender, EventArgs e)
    {
        // Run the Page Validate method in order to force
        // the CompareValidate to show it's error message.
        get_Page().Validate();
    } //Page_Load
    </script>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom CompareValidator - ControlPropertiesValid - VJ# Example</h3>

      <asp:TextBox id="TextBox1" runat="server" Text="123"></asp:TextBox><br />

      <aspSample:CustomCompareValidatorControlPropertiesValid
        id="CompareValidator1"
        runat="server"
        Display="Dynamic"
        ErrorMessage="The value of TextBox1 must be '456'."
        ControlToValidate="TextBox1"
        ValueToCompare="456" /><br />

      <asp:Button id="Button1" runat="server" Text="Button" />

    </form>
  </body>
</html>

	...

package Samples.AspNet.JSL.Controls;

public class CustomCompareValidatorControlPropertiesValid
    extends System.Web.UI.WebControls.CompareValidator
{
    protected boolean ControlPropertiesValid()
    {
        // Determine whether the ControlToValidate is on the page 
        // and contains a validation properties. 
        super.CheckControlValidationProperty(this.get_ControlToValidate(),
            "ControlToValidate");
        // If the control is visible, then control is valid and is ready 
        // for validation.
        System.Web.UI.Control control = 
            this.FindControl(this.get_ControlToValidate());
        return control.get_Visible();
    } //ControlPropertiesValid
} //CustomCompareValidatorControlPropertiesValid

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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