Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / ParameterCollection.cs / 1 / ParameterCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; using System.Collections.Specialized; using System.ComponentModel; using System.ComponentModel.Design; using System.Drawing.Design; using System.Globalization; using System.Reflection; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.Util; using System.Security.Permissions; ////// A state managed collection of Parameter objects. /// These are used in many DataSourceControls to filter queries. /// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] [ Editor("System.Web.UI.Design.WebControls.ParameterCollectionEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)), ] public class ParameterCollection : StateManagedCollection { private EventHandler _parametersChangedHandler; private static readonly Type[] knownTypes = new Type[] { typeof(ControlParameter), typeof(CookieParameter), typeof(FormParameter), typeof(Parameter), typeof(QueryStringParameter), typeof(SessionParameter), typeof(ProfileParameter), }; ////// Returns the Parameter at a given index. /// public Parameter this[int index] { get { return (Parameter)((IList)this)[index]; } set { ((IList)this)[index] = value; } } ////// Returns the Parameter with a given name. /// public Parameter this[string name] { get { int parameterIndex = GetParameterIndex(name); if (parameterIndex == -1) { return null; } return this[parameterIndex]; } set { int parameterIndex = GetParameterIndex(name); if (parameterIndex == -1) { Add(value); } else { this[parameterIndex] = value; } } } ////// Occurs when any of the Parameter objects in the collection change or when the collection itself changes. /// public event EventHandler ParametersChanged { add { _parametersChangedHandler = (EventHandler)Delegate.Combine(_parametersChangedHandler, value); } remove { _parametersChangedHandler = (EventHandler)Delegate.Remove(_parametersChangedHandler, value); } } ////// Adds a Parameter to the collection. /// public int Add(Parameter parameter) { return ((IList)this).Add(parameter); } ////// Adds a Parameter to the collection with a specified name and value. /// public int Add(string name, string value) { return ((IList)this).Add(new Parameter(name, TypeCode.Empty, value)); } ////// Adds a Parameter to the collection with a specified name, type, and value. /// public int Add(string name, TypeCode type, string value) { return ((IList)this).Add(new Parameter(name, type, value)); } ////// Used by Parameters to raise the ParametersChanged event. /// internal void CallOnParametersChanged() { OnParametersChanged(EventArgs.Empty); } public bool Contains(Parameter parameter) { return ((IList)this).Contains(parameter); } public void CopyTo(Parameter[] parameterArray, int index) { base.CopyTo(parameterArray, index); } ////// Creates a known type of Parameter. /// protected override object CreateKnownType(int index) { switch (index) { case 0: return new ControlParameter(); case 1: return new CookieParameter(); case 2: return new FormParameter(); case 3: return new Parameter(); case 4: return new QueryStringParameter(); case 5: return new SessionParameter(); case 6: return new ProfileParameter(); default: throw new ArgumentOutOfRangeException("index"); } } ////// Returns an ArrayList of known Parameter types. /// protected override Type[] GetKnownTypes() { return knownTypes; } ////// Returns the index of a parameter by name. /// private int GetParameterIndex(string name) { for (int i = 0; i < Count; i++) { if (String.Equals(this[i].Name, name, StringComparison.OrdinalIgnoreCase)) { return i; } } return -1; } ////// Returns an IDictionary containing Name / Value pairs of all the parameters. /// public IOrderedDictionary GetValues(HttpContext context, Control control) { UpdateValues(context, control); // Create dictionary IOrderedDictionary valueDictionary = new OrderedDictionary(); // Add Parameters foreach (Parameter param in this) { // For the OrderedDictionary, every parameter must have a unique name, so in some cases we have to alter them. string uniqueName = param.Name; int count = 1; while (valueDictionary.Contains(uniqueName)) { uniqueName = param.Name + count.ToString(CultureInfo.InvariantCulture); count++; } valueDictionary.Add(uniqueName, param.ParameterValue); } return valueDictionary; } public int IndexOf(Parameter parameter) { return ((IList)this).IndexOf(parameter); } ////// Inserts a Parameter into the collection. /// public void Insert(int index, Parameter parameter) { ((IList)this).Insert(index, parameter); } ////// Called when the Clear() method is complete. /// protected override void OnClearComplete() { base.OnClearComplete(); OnParametersChanged(EventArgs.Empty); } ////// Called when the Insert() method is starting. /// Adds an event handler to listen to the Parameter's ParameterChanged event. /// protected override void OnInsert(int index, object value) { base.OnInsert(index, value); // Set owner (we are guaranteed that it is a Parameter // in OnValidate). ((Parameter)value).SetOwner(this); } ////// Called when the Insert() method is complete. /// protected override void OnInsertComplete(int index, object value) { base.OnInsertComplete(index, value); OnParametersChanged(EventArgs.Empty); } ////// Raises the ParametersChanged event. /// protected virtual void OnParametersChanged(EventArgs e) { if (_parametersChangedHandler != null) { _parametersChangedHandler(this, e); } } ////// Called when the Remove() method is complete. /// protected override void OnRemoveComplete(int index, object value) { base.OnRemoveComplete(index, value); // Clear owner ((Parameter)value).SetOwner(null); OnParametersChanged(EventArgs.Empty); } ////// Validates that an object is a Parameter. /// protected override void OnValidate(object o) { base.OnValidate(o); if (!(o is Parameter)) throw new ArgumentException(SR.GetString(SR.ParameterCollection_NotParameter), "o"); } ////// Removes a Parameter from the collection. /// public void Remove(Parameter parameter) { ((IList)this).Remove(parameter); } ////// Removes a Parameter from the collection at a given index. /// public void RemoveAt(int index) { ((IList)this).RemoveAt(index); } ////// Marks a Parameter as dirty so that it will record its entire state into view state. /// protected override void SetDirtyObject(object o) { ((Parameter)o).SetDirty(); } ////// Updates all parameter values to possibly raise a ParametersChanged event. /// public void UpdateValues(HttpContext context, Control control) { foreach (Parameter param in this) { param.UpdateValue(context, control); } } } }
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- PolyLineSegment.cs
- ObjectComplexPropertyMapping.cs
- xdrvalidator.cs
- TagPrefixCollection.cs
- AccessorTable.cs
- FileDialogCustomPlacesCollection.cs
- XmlQualifiedName.cs
- DateTimeConstantAttribute.cs
- OAVariantLib.cs
- ObjRef.cs
- FormatterServices.cs
- MouseGestureConverter.cs
- BinaryExpression.cs
- WindowsServiceCredential.cs
- StateWorkerRequest.cs
- CriticalFinalizerObject.cs
- Span.cs
- TypeUtil.cs
- EraserBehavior.cs
- SafeCoTaskMem.cs
- SettingsPropertyNotFoundException.cs
- CellLabel.cs
- ErrorStyle.cs
- DependencySource.cs
- PackageRelationshipSelector.cs
- UserControlDesigner.cs
- CachedPathData.cs
- OptimizedTemplateContentHelper.cs
- WebPartConnectionsCloseVerb.cs
- TypeUtil.cs
- NullExtension.cs
- SQlBooleanStorage.cs
- SuppressMergeCheckAttribute.cs
- GetRecipientRequest.cs
- KnownAssemblyEntry.cs
- SignatureHelper.cs
- RSAOAEPKeyExchangeFormatter.cs
- EditorPart.cs
- UiaCoreProviderApi.cs
- PaginationProgressEventArgs.cs
- xml.cs
- InputLanguage.cs
- BrowserTree.cs
- WindowsMenu.cs
- VariantWrapper.cs
- CreateUserWizardStep.cs
- Brush.cs
- ListViewEditEventArgs.cs
- CustomAttribute.cs
- OuterGlowBitmapEffect.cs
- TextFormatter.cs
- KeyBinding.cs
- SqlUserDefinedTypeAttribute.cs
- TextTreeNode.cs
- Context.cs
- Control.cs
- TextElement.cs
- XmlSerializationGeneratedCode.cs
- WebPartConnectionsConfigureVerb.cs
- MenuStrip.cs
- LabelLiteral.cs
- ApplicationId.cs
- HMACMD5.cs
- FileSystemEventArgs.cs
- EntityDataSourceDesigner.cs
- PriorityItem.cs
- NullableDoubleAverageAggregationOperator.cs
- AsyncCompletedEventArgs.cs
- Wildcard.cs
- EventToken.cs
- PersonalizationDictionary.cs
- ContentOperations.cs
- ProcessHostServerConfig.cs
- SmtpFailedRecipientException.cs
- EventArgs.cs
- ToolboxItemAttribute.cs
- EvidenceTypeDescriptor.cs
- GeometryModel3D.cs
- PropertyTabAttribute.cs
- ListBoxItemAutomationPeer.cs
- Publisher.cs
- EntityConnectionStringBuilder.cs
- bidPrivateBase.cs
- FileAuthorizationModule.cs
- CursorConverter.cs
- GregorianCalendarHelper.cs
- DefaultBinder.cs
- WebRequestModuleElementCollection.cs
- TranslateTransform3D.cs
- ProfessionalColorTable.cs
- WebReferenceOptions.cs
- IndentTextWriter.cs
- DefaultPropertiesToSend.cs
- ToolStripRenderer.cs
- TypeConverterValueSerializer.cs
- _LocalDataStoreMgr.cs
- DataListAutoFormat.cs
- Publisher.cs
- CompareValidator.cs
- securitycriticaldata.cs