Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebControls / RequiredFieldValidator.cs / 1 / RequiredFieldValidator.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; ////// [ ToolboxData("<{0}:RequiredFieldValidator runat=\"server\" ErrorMessage=\"RequiredFieldValidator\">{0}:RequiredFieldValidator>") ] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class RequiredFieldValidator : BaseValidator { ///Checks if the value of /// the associated input control is different from its initial value. ////// [ WebCategory("Behavior"), Themeable(false), DefaultValue(""), WebSysDescription(SR.RequiredFieldValidator_InitialValue) ] public string InitialValue { get { object o = ViewState["InitialValue"]; return((o == null) ? String.Empty : (string)o); } set { ViewState["InitialValue"] = value; } } ///Gets or sets the initial value of the associated input control. ////// /// AddAttributesToRender method /// protected override void AddAttributesToRender(HtmlTextWriter writer) { base.AddAttributesToRender(writer); if (RenderUplevel) { string id = ClientID; HtmlTextWriter expandoAttributeWriter = (EnableLegacyRendering) ? writer : null; AddExpandoAttribute(expandoAttributeWriter, id, "evaluationfunction", "RequiredFieldValidatorEvaluateIsValid", false); AddExpandoAttribute(expandoAttributeWriter, id, "initialvalue", InitialValue); } } ////// /// EvaluateIsValid method /// protected override bool EvaluateIsValid() { // Get the control value, return true if it is not found string controlValue = GetControlValidationValue(ControlToValidate); if (controlValue == null) { Debug.Fail("Should have been caught by PropertiesValid check"); return true; } // See if the control has changed return(!controlValue.Trim().Equals(InitialValue.Trim())); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- EndpointDiscoveryElement.cs
- BasicHttpSecurity.cs
- WindowsSpinner.cs
- BeginEvent.cs
- FlowDocumentPageViewerAutomationPeer.cs
- WindowsListViewScroll.cs
- TypeGeneratedEventArgs.cs
- RenamedEventArgs.cs
- ViewStateModeByIdAttribute.cs
- UInt32Storage.cs
- DrawTreeNodeEventArgs.cs
- ActivityCodeDomSerializer.cs
- SwitchElementsCollection.cs
- XmlTextEncoder.cs
- AssemblyBuilder.cs
- XhtmlBasicTextBoxAdapter.cs
- QuotedPrintableStream.cs
- SmiSettersStream.cs
- Environment.cs
- ActivationServices.cs
- XPathParser.cs
- Events.cs
- SqlDataSourceFilteringEventArgs.cs
- While.cs
- TreeView.cs
- APCustomTypeDescriptor.cs
- ChannelSinkStacks.cs
- SubMenuStyleCollection.cs
- IntSecurity.cs
- CollectionBuilder.cs
- SerializationInfo.cs
- DataTableCollection.cs
- COM2ColorConverter.cs
- CompilerWrapper.cs
- _UncName.cs
- HandlerFactoryCache.cs
- Token.cs
- ListBoxItem.cs
- MasterPageCodeDomTreeGenerator.cs
- ByteAnimationBase.cs
- OneOfElement.cs
- SapiAttributeParser.cs
- LinearQuaternionKeyFrame.cs
- DataGridViewComboBoxEditingControl.cs
- TaskHelper.cs
- RsaKeyGen.cs
- PLINQETWProvider.cs
- ComponentChangingEvent.cs
- VariableExpressionConverter.cs
- IgnoreSectionHandler.cs
- LinkButton.cs
- SqlFlattener.cs
- DbParameterCollectionHelper.cs
- FormsAuthenticationUser.cs
- BaseConfigurationRecord.cs
- WindowsTab.cs
- UmAlQuraCalendar.cs
- BitmapEffectState.cs
- XmlDocumentViewSchema.cs
- NetMsmqSecurity.cs
- RemotingHelper.cs
- InputMethodStateTypeInfo.cs
- TargetControlTypeCache.cs
- TabletDevice.cs
- WebPartDisplayMode.cs
- JapaneseCalendar.cs
- EntityDesignerUtils.cs
- Facet.cs
- SqlInternalConnectionTds.cs
- ApplicationManager.cs
- ReadOnlyHierarchicalDataSourceView.cs
- FixedTextBuilder.cs
- SafeLibraryHandle.cs
- SHA384Managed.cs
- LinkLabel.cs
- AssemblyName.cs
- RadioButtonList.cs
- EventRouteFactory.cs
- EncodingFallbackAwareXmlTextWriter.cs
- GenericAuthenticationEventArgs.cs
- XPathParser.cs
- PassportAuthenticationEventArgs.cs
- PointKeyFrameCollection.cs
- XhtmlMobileTextWriter.cs
- ListControl.cs
- StringSorter.cs
- VisualProxy.cs
- FileDataSourceCache.cs
- HiddenField.cs
- Faults.cs
- XmlSchemaObjectTable.cs
- SHA256Managed.cs
- RowBinding.cs
- ConfigXmlSignificantWhitespace.cs
- ChildTable.cs
- ComponentResourceManager.cs
- TrackingProfileCache.cs
- OrthographicCamera.cs
- TogglePattern.cs
- MetaTable.cs