CustomValidator.ControlPropertiesValid メソッド

Dim returnValue As Boolean returnValue = Me.ControlPropertiesValid


CustomValidator.ControlPropertiesValid メソッド
アセンブリ: System.Web (system.web.dll 内)

Dim returnValue As Boolean returnValue = Me.ControlPropertiesValid
コントロール プロパティが有効な場合は true。それ以外の場合は false。

カスタム サーバー コントロールの ControlPropertiesValid メソッドをオーバーライドすることにより、CustomValidator コントロールの ControlToValidate プロパティがページ上にあり、かつ検証プロパティが含まれている限り、Visible プロパティの値が常に返されるようにする方法を次のコード例に示します。
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %> <%@ Page Language="VB" AutoEventWireup="True" %> <HTML> <HEAD> <title>Custom CustomValidator - ControlPropertiesValid - VB.NET Example</title> <script runat="server"> Sub CustomValidator1_ServerValidate(source As Object, args As ServerValidateEventArgs) args.IsValid = False Try ' Test whether the value entered into the text box is even or not. Dim i As Integer = Integer.Parse(args.Value) If (i Mod 2) = 0 Then args.IsValid = True End If Catch End Try End Sub </script> </HEAD> <body> <form id="Form1" method="post" runat="server"> <h3>Custom CustomValidator - ControlPropertiesValid - VB.NET Example</h3> <asp:Label id="Label1" runat="server" Text="Enter an even number:" /><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> <br /><span space="preserve">...</span><br />Imports System.Web Imports System.Security.Permissions Namespace Samples.AspNet.VB.Controls <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _ Public NotInheritable Class CustomCustomValidatorControlPropertiesValid Inherits System.Web.UI.WebControls.CustomValidator Protected Overrides Function ControlPropertiesValid() As Boolean Dim controlToValidate As String = Me.ControlToValidate ' Determine whether the ControlToValidate is on the page ' and contains a valid validation property. If controlToValidate.Length > 0 Then MyBase.CheckControlValidationProperty(controlToValidate, "ControlToValidate") End If ' If the control is visible, then control is valid ' and is ready for validation. Dim control As System.Web.UI.Control = Me.FindControl(controlToValidate) If control.Visible = True Then Return True Else Return False End If End Function End Class End Namespace
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet" Assembly="Samples.AspNet.CS" %> <%@ Page Language="C#" AutoEventWireup="True" %> <HTML> <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:" /><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> <br /><span space="preserve">...</span><br />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; } } }
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet" Assembly="Samples.AspNet.JSL" %> <%@ Page Language="VJ#" AutoEventWireup="True" %> <HTML> <HEAD> <title>Custom CustomValidator - ControlPropertiesValid - VJ# 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 = Int32.Parse(args.get_Value()); args.set_IsValid((i%2) == 0); } catch(Exception ex) { args.set_IsValid(false); } } //CustomValidator1_ServerValidate </script> </HEAD> <body> <form id="Form1" method="post" runat="server"> <h3>Custom CustomValidator - ControlPropertiesValid - VJ# Example</h3> <asp:Label id="Label1" runat="server" Text="Enter an even number:" /><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> <br /><span space="preserve">...</span><br />package Samples.AspNet; public class CustomCustomValidatorControlPropertiesValid extends System.Web.UI.WebControls.CustomValidator { protected boolean ControlPropertiesValid() { String controlToValidate = this.get_ControlToValidate(); // Determine whether the ControlToValidate is on the page // and contains a valid validation property. if (controlToValidate.get_Length() > 0) { super.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.get_Visible(); } //ControlPropertiesValid } //CustomCustomValidatorControlPropertiesValid

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