Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / XPathBinder.cs / 1 / XPathBinder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.Globalization; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Data; using System.Security.Permissions; using System.Xml; using System.Xml.XPath; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class XPathBinder { ///private XPathBinder() { } /// /// public static object Eval(object container, string xPath) { IXmlNamespaceResolver resolver = null; return Eval(container, xPath, resolver); } public static object Eval(object container, string xPath, IXmlNamespaceResolver resolver) { if (container == null) { throw new ArgumentNullException("container"); } if (String.IsNullOrEmpty(xPath)) { throw new ArgumentNullException("xPath"); } IXPathNavigable node = container as IXPathNavigable; if (node == null) { throw new ArgumentException(SR.GetString(SR.XPathBinder_MustBeIXPathNavigable, container.GetType().FullName)); } XPathNavigator navigator = node.CreateNavigator(); object retValue = navigator.Evaluate(xPath, resolver); // If we get back an XPathNodeIterator instead of a simple object, advance // the iterator to the first node and return the value. XPathNodeIterator iterator = retValue as XPathNodeIterator; if (iterator != null) { if (iterator.MoveNext()) { retValue = iterator.Current.Value; } else { retValue = null; } } return retValue; } ////// public static string Eval(object container, string xPath, string format) { return Eval(container, xPath, format, null); } public static string Eval(object container, string xPath, string format, IXmlNamespaceResolver resolver) { object value = XPathBinder.Eval(container, xPath, resolver); if (value == null) { return String.Empty; } else { if (String.IsNullOrEmpty(format)) { return value.ToString(); } else { return String.Format(format, value); } } } ////// Evaluates an XPath query with respect to a context IXPathNavigable object that returns a NodeSet. /// public static IEnumerable Select(object container, string xPath) { return Select(container, xPath, null); } public static IEnumerable Select(object container, string xPath, IXmlNamespaceResolver resolver) { if (container == null) { throw new ArgumentNullException("container"); } if (String.IsNullOrEmpty(xPath)) { throw new ArgumentNullException("xPath"); } ArrayList results = new ArrayList(); IXPathNavigable node = container as IXPathNavigable; if (node == null) { throw new ArgumentException(SR.GetString(SR.XPathBinder_MustBeIXPathNavigable, container.GetType().FullName)); } XPathNavigator navigator = node.CreateNavigator(); XPathNodeIterator iterator = navigator.Select(xPath, resolver); while (iterator.MoveNext()) { IHasXmlNode hasXmlNode = iterator.Current as IHasXmlNode; if (hasXmlNode == null) { throw new InvalidOperationException(SR.GetString(SR.XPathBinder_MustHaveXmlNodes)); } results.Add(hasXmlNode.GetNode()); } return results; } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- CommandDevice.cs
- DbConnectionPoolCounters.cs
- RequestQueue.cs
- QilInvokeEarlyBound.cs
- Invariant.cs
- MeshGeometry3D.cs
- newinstructionaction.cs
- RotateTransform3D.cs
- cookie.cs
- OleDbEnumerator.cs
- DetailsViewPageEventArgs.cs
- SourceFilter.cs
- UnionQueryOperator.cs
- StackBuilderSink.cs
- OutOfMemoryException.cs
- VolatileEnlistmentState.cs
- SoapTypeAttribute.cs
- CellTreeNodeVisitors.cs
- DateTimeParse.cs
- ScriptingProfileServiceSection.cs
- RowToFieldTransformer.cs
- HyperLinkField.cs
- NavigatorInput.cs
- DirectoryNotFoundException.cs
- RoleManagerSection.cs
- PropertyIDSet.cs
- RequestCachingSection.cs
- CharacterMetrics.cs
- ItemList.cs
- OdbcConnectionOpen.cs
- SHA1.cs
- QilInvoke.cs
- Attribute.cs
- AudioStateChangedEventArgs.cs
- ProjectionCamera.cs
- WpfKnownTypeInvoker.cs
- CornerRadius.cs
- ActivityStatusChangeEventArgs.cs
- Wow64ConfigurationLoader.cs
- ConfigDefinitionUpdates.cs
- DataServiceContext.cs
- DBConcurrencyException.cs
- RepeatButton.cs
- DBSchemaTable.cs
- connectionpool.cs
- DurableServiceAttribute.cs
- CallContext.cs
- SafeWaitHandle.cs
- TableAdapterManagerHelper.cs
- PatternMatcher.cs
- _AutoWebProxyScriptWrapper.cs
- Activity.cs
- SQLString.cs
- SequentialUshortCollection.cs
- Profiler.cs
- Preprocessor.cs
- ToolStripItemClickedEventArgs.cs
- SafeHandle.cs
- NavigateUrlConverter.cs
- XmlNodeChangedEventManager.cs
- WeakReference.cs
- Configuration.cs
- StrokeFIndices.cs
- EditorZone.cs
- ChannelManagerService.cs
- WebBrowserUriTypeConverter.cs
- FormViewPageEventArgs.cs
- EnumType.cs
- DynamicMethod.cs
- FrameAutomationPeer.cs
- DbFunctionCommandTree.cs
- InvokePattern.cs
- SerializationBinder.cs
- WindowPatternIdentifiers.cs
- RoutedEventValueSerializer.cs
- BamlTreeNode.cs
- storepermission.cs
- PartialArray.cs
- Timer.cs
- RemotingConfigParser.cs
- CompoundFileReference.cs
- TypeDescriptor.cs
- Zone.cs
- EmbossBitmapEffect.cs
- PropertyGridEditorPart.cs
- XmlArrayItemAttributes.cs
- MarkupProperty.cs
- ConnectionStringsSection.cs
- SrgsSubset.cs
- MaskedTextBox.cs
- basenumberconverter.cs
- EnumUnknown.cs
- ResourceReader.cs
- CallId.cs
- XmlAnyElementAttributes.cs
- DateTimeOffset.cs
- EncryptedPackageFilter.cs
- InputReport.cs
- MemberPath.cs
- RTTrackingProfile.cs