Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / CustomValidator.cs / 1305376 / CustomValidator.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System.ComponentModel; using System.Web; using System.Web.Util; ////// [ DefaultEvent("ServerValidate"), ToolboxData("<{0}:CustomValidator runat=\"server\" ErrorMessage=\"CustomValidator\">{0}:CustomValidator>") ] 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.Raises the /// ///event for the .
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- XmlSchemaAny.cs
- GridProviderWrapper.cs
- AspNetCacheProfileAttribute.cs
- Util.cs
- EventBuilder.cs
- CodeTypeOfExpression.cs
- TableSectionStyle.cs
- FixedSOMPage.cs
- ClosableStream.cs
- ToolStripSplitStackLayout.cs
- StrongNameIdentityPermission.cs
- CodeCatchClauseCollection.cs
- InvalidEnumArgumentException.cs
- Scripts.cs
- DetailsViewRowCollection.cs
- ErrorStyle.cs
- TagMapCollection.cs
- SortDescription.cs
- WindowsIPAddress.cs
- Int32CAMarshaler.cs
- XomlCompiler.cs
- Assembly.cs
- ListViewGroupConverter.cs
- MarkupExtensionReturnTypeAttribute.cs
- NetworkInformationException.cs
- Expressions.cs
- ProtocolsConfiguration.cs
- ExpressionNode.cs
- PersonalizationProvider.cs
- PageCodeDomTreeGenerator.cs
- Int16Storage.cs
- MissingFieldException.cs
- initElementDictionary.cs
- KnownTypeDataContractResolver.cs
- TimelineGroup.cs
- JsonReader.cs
- jithelpers.cs
- WebPartActionVerb.cs
- DataGridViewRowCancelEventArgs.cs
- ServiceBusyException.cs
- EntityKeyElement.cs
- SchemaImporterExtensionsSection.cs
- CodeAccessPermission.cs
- XmlLoader.cs
- DbConnectionPoolOptions.cs
- UrlPropertyAttribute.cs
- WebPartUtil.cs
- WinEventWrap.cs
- ToolStrip.cs
- SamlAction.cs
- SqlDataSourceConnectionPanel.cs
- HtmlDocument.cs
- SecureEnvironment.cs
- ExpressionCopier.cs
- recordstatefactory.cs
- SignatureResourceHelper.cs
- InlineCollection.cs
- NativeWindow.cs
- DeploymentExceptionMapper.cs
- SectionXmlInfo.cs
- MetafileHeaderWmf.cs
- WmlLiteralTextAdapter.cs
- SecurityElement.cs
- controlskin.cs
- HwndPanningFeedback.cs
- ClientScriptManager.cs
- DataViewSetting.cs
- ProfessionalColors.cs
- NullableIntSumAggregationOperator.cs
- SourceLineInfo.cs
- XmlBufferedByteStreamReader.cs
- WebControl.cs
- InternalBase.cs
- PropertyPath.cs
- X509Utils.cs
- BreakRecordTable.cs
- SessionParameter.cs
- InvalidContentTypeException.cs
- WebBrowserSiteBase.cs
- FolderBrowserDialog.cs
- WindowsUpDown.cs
- ExpressionBindings.cs
- ContentIterators.cs
- XmlEventCache.cs
- Pool.cs
- DataBindEngine.cs
- WorkflowElementDialog.cs
- WindowsSecurityTokenAuthenticator.cs
- XmlEncoding.cs
- DataGridViewSelectedCellsAccessibleObject.cs
- ExpressionWriter.cs
- LayoutExceptionEventArgs.cs
- CorePropertiesFilter.cs
- RenderData.cs
- ImageKeyConverter.cs
- HttpWebResponse.cs
- MimeTypePropertyAttribute.cs
- SaveFileDialogDesigner.cs
- ElementNotAvailableException.cs
- SmtpMail.cs