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
- DrawingContext.cs
- AttributeEmitter.cs
- DesignerUtils.cs
- XsdCachingReader.cs
- CheckBoxDesigner.cs
- DataGridViewRowsRemovedEventArgs.cs
- InputLanguageEventArgs.cs
- FormsAuthenticationUser.cs
- ColorConverter.cs
- WebResourceUtil.cs
- ChannelSinkStacks.cs
- DispatcherHooks.cs
- TrayIconDesigner.cs
- DetailsViewUpdateEventArgs.cs
- ScopedMessagePartSpecification.cs
- TdsValueSetter.cs
- Variable.cs
- MemberPath.cs
- ProviderCollection.cs
- DesignRelationCollection.cs
- TypeReference.cs
- DataViewListener.cs
- _NTAuthentication.cs
- ApplicationActivator.cs
- IPPacketInformation.cs
- SchemaElementLookUpTableEnumerator.cs
- UIElement.cs
- WebPartZone.cs
- ListBindableAttribute.cs
- EntityFunctions.cs
- ChangeDirector.cs
- MatrixTransform3D.cs
- _Semaphore.cs
- ConsoleTraceListener.cs
- GridViewHeaderRowPresenterAutomationPeer.cs
- ComplexTypeEmitter.cs
- StringPropertyBuilder.cs
- ReversePositionQuery.cs
- ResXFileRef.cs
- ProcessThread.cs
- HeaderLabel.cs
- DataKeyCollection.cs
- QuaternionValueSerializer.cs
- PermissionToken.cs
- CompressStream.cs
- Compiler.cs
- MouseWheelEventArgs.cs
- RemotingServices.cs
- DispatcherProcessingDisabled.cs
- DataServiceResponse.cs
- RecipientInfo.cs
- ColumnBinding.cs
- WCFBuildProvider.cs
- XXXOnTypeBuilderInstantiation.cs
- SerialStream.cs
- SubtreeProcessor.cs
- StorageScalarPropertyMapping.cs
- ComponentResourceKey.cs
- CalloutQueueItem.cs
- SynchronizedDispatch.cs
- StringFormat.cs
- CuspData.cs
- ForEach.cs
- XmlArrayAttribute.cs
- Matrix3DValueSerializer.cs
- CellIdBoolean.cs
- DCSafeHandle.cs
- OdbcParameter.cs
- ColumnClickEvent.cs
- PenLineJoinValidation.cs
- DeclarativeCatalogPartDesigner.cs
- XmlElement.cs
- OleDbParameter.cs
- ArrayEditor.cs
- DataGridViewAutoSizeModeEventArgs.cs
- GradientBrush.cs
- AxWrapperGen.cs
- GridProviderWrapper.cs
- InstallerTypeAttribute.cs
- XmlNodeChangedEventArgs.cs
- RepeaterItem.cs
- MimeMapping.cs
- SafeNativeMethodsCLR.cs
- ScriptComponentDescriptor.cs
- StrokeFIndices.cs
- ObjectHelper.cs
- ClientApiGenerator.cs
- XmlLanguageConverter.cs
- OleDbErrorCollection.cs
- XmlStringTable.cs
- _ProxyChain.cs
- RelationshipConstraintValidator.cs
- TextTreeNode.cs
- SqlReorderer.cs
- Exceptions.cs
- StackOverflowException.cs
- Camera.cs
- XmlEntityReference.cs
- DataAdapter.cs
- EntityDataSourceEntityTypeFilterConverter.cs