Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebControls / CustomValidator.cs / 1 / CustomValidator.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System.ComponentModel; using System.Web; using System.Security.Permissions; using System.Web.Util; ////// [ DefaultEvent("ServerValidate"), ToolboxData("<{0}:CustomValidator runat=\"server\" ErrorMessage=\"CustomValidator\">{0}:CustomValidator>") ] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class CustomValidator : BaseValidator { private static readonly object EventServerValidate= new object(); ///Allows custom code to perform /// validation on the client and/or server. ////// [ WebCategory("Behavior"), Themeable(false), DefaultValue(""), WebSysDescription(SR.CustomValidator_ClientValidationFunction) ] public string ClientValidationFunction { get { object o = ViewState["ClientValidationFunction"]; return((o == null) ? String.Empty : (string)o); } set { ViewState["ClientValidationFunction"] = value; } } [ WebCategory("Behavior"), Themeable(false), DefaultValue(false), WebSysDescription(SR.CustomValidator_ValidateEmptyText), ] public bool ValidateEmptyText { get { object o = ViewState["ValidateEmptyText"]; return((o == null) ? false : (bool)o); } set { ViewState["ValidateEmptyText"] = value; } } ///Gets and sets the custom client Javascript function used /// for validation. ////// [ WebSysDescription(SR.CustomValidator_ServerValidate) ] public event ServerValidateEventHandler ServerValidate { add { Events.AddHandler(EventServerValidate, value); } remove { Events.RemoveHandler(EventServerValidate, value); } } ///Represents the method that will handle the /// ///event of a /// . /// /// protected override void AddAttributesToRender(HtmlTextWriter writer) { base.AddAttributesToRender(writer); if (RenderUplevel) { string id = ClientID; HtmlTextWriter expandoAttributeWriter = (EnableLegacyRendering) ? writer : null; AddExpandoAttribute(expandoAttributeWriter, id, "evaluationfunction", "CustomValidatorEvaluateIsValid", false); if (ClientValidationFunction.Length > 0) { AddExpandoAttribute(expandoAttributeWriter, id, "clientvalidationfunction", ClientValidationFunction); if (ValidateEmptyText) { AddExpandoAttribute(expandoAttributeWriter, id, "validateemptytext", "true", false); } } } } ///Adds the properties of the ///control to the /// output stream for rendering on the client. /// /// protected override bool ControlPropertiesValid() { // Need to override the BaseValidator implementation, because for CustomValidator, it is fine // for the ControlToValidate to be blank. string controlToValidate = ControlToValidate; if (controlToValidate.Length > 0) { // Check that the property points to a valid control. Will throw and exception if not found CheckControlValidationProperty(controlToValidate, "ControlToValidate"); } return true; } ///Checks the properties of the control for valid values. ////// /// EvaluateIsValid method /// protected override bool EvaluateIsValid() { // If no control is specified, we always fire the event. If they have specified a control, we // only fire the event if the input is non-blank. string controlValue = String.Empty; string controlToValidate = ControlToValidate; if (controlToValidate.Length > 0) { controlValue = GetControlValidationValue(controlToValidate); Debug.Assert(controlValue != null, "Should have been caught be property check"); // If the text is empty, we return true. Whitespace is ignored for coordination wiht // RequiredFieldValidator. if ((controlValue == null || controlValue.Trim().Length == 0) && !ValidateEmptyText) { return true; } } return OnServerValidate(controlValue); } ////// protected virtual bool OnServerValidate(string value) { ServerValidateEventHandler handler = (ServerValidateEventHandler)Events[EventServerValidate]; ServerValidateEventArgs args = new ServerValidateEventArgs(value, true); if (handler != null) { handler(this, args); return args.IsValid; } else { return true; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.Raises the /// ///event for the .
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Activity.cs
- ArraySortHelper.cs
- RouteUrlExpressionBuilder.cs
- WebException.cs
- CustomAttributeFormatException.cs
- GCHandleCookieTable.cs
- Point4DConverter.cs
- ColorContext.cs
- DesignRelationCollection.cs
- ScriptingScriptResourceHandlerSection.cs
- x509utils.cs
- RuleInfoComparer.cs
- WorkflowServiceOperationListItem.cs
- ContentElementAutomationPeer.cs
- InstanceDescriptor.cs
- SafeProcessHandle.cs
- InstanceCompleteException.cs
- _DigestClient.cs
- CheckedListBox.cs
- DecimalAnimation.cs
- XmlCharType.cs
- GenericTypeParameterBuilder.cs
- KeySplineConverter.cs
- ScrollData.cs
- MarkedHighlightComponent.cs
- BitmapEffectOutputConnector.cs
- CodeExpressionStatement.cs
- RectAnimation.cs
- SHA256.cs
- ContentPlaceHolderDesigner.cs
- Atom10ItemFormatter.cs
- SHA256.cs
- DocumentOutline.cs
- pingexception.cs
- DtdParser.cs
- BamlResourceSerializer.cs
- BuildProvider.cs
- PropertyRef.cs
- CreatingCookieEventArgs.cs
- ProjectionCamera.cs
- DateTimeFormat.cs
- GcHandle.cs
- TileBrush.cs
- FileDataSource.cs
- LineSegment.cs
- DataKeyArray.cs
- WindowsFormsHostAutomationPeer.cs
- UnSafeCharBuffer.cs
- FtpWebRequest.cs
- XsltArgumentList.cs
- DataViewListener.cs
- Shape.cs
- elementinformation.cs
- WindowsScrollBar.cs
- XsltSettings.cs
- Message.cs
- SafeArrayTypeMismatchException.cs
- SettingsSection.cs
- QuotedPrintableStream.cs
- StyleSelector.cs
- Cursors.cs
- SecondaryIndexDefinition.cs
- CatalogPart.cs
- NamespaceExpr.cs
- SimpleTableProvider.cs
- WebResourceUtil.cs
- CodeGroup.cs
- ConnectionString.cs
- AuthorizationRule.cs
- Page.cs
- ExpandedProjectionNode.cs
- NameNode.cs
- DbProviderConfigurationHandler.cs
- DataGridAddNewRow.cs
- COM2IProvidePropertyBuilderHandler.cs
- LogRestartAreaEnumerator.cs
- TagPrefixInfo.cs
- ContentOperations.cs
- CodeDirectoryCompiler.cs
- FlowDocumentReader.cs
- ShortcutKeysEditor.cs
- ImageAutomationPeer.cs
- FunctionDetailsReader.cs
- CryptoConfig.cs
- BamlBinaryReader.cs
- MergablePropertyAttribute.cs
- EventMappingSettings.cs
- SmtpLoginAuthenticationModule.cs
- PathFigureCollectionConverter.cs
- NameSpaceExtractor.cs
- DataGridViewRowHeaderCell.cs
- HtmlInputRadioButton.cs
- UdpDiscoveryEndpointElement.cs
- SvcMapFileLoader.cs
- assemblycache.cs
- Rectangle.cs
- Models.cs
- QueryComponents.cs
- WindowsNonControl.cs
- HyperLinkStyle.cs