Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / Common / DbConnectionStringBuilder.cs / 1 / DbConnectionStringBuilder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.Common; using System.Diagnostics; using System.Globalization; using System.Runtime.Serialization; using System.Security.Permissions; using System.Text; using System.Text.RegularExpressions; #if WINFSInternalOnly internal #else public #endif class DbConnectionStringBuilder : System.Collections.IDictionary, ICustomTypeDescriptor { // keyword->value currently listed in the connection string private Dictionary_currentValues; // cached connectionstring to avoid constant rebuilding // and to return a user's connectionstring as is until editing occurs private string _connectionString = ""; private PropertyDescriptorCollection _propertyDescriptors; private bool _browsableConnectionString = true; private readonly bool UseOdbcRules; private static int _objectTypeCount; // Bid counter internal readonly int _objectID = System.Threading.Interlocked.Increment(ref _objectTypeCount); public DbConnectionStringBuilder() { } public DbConnectionStringBuilder(bool useOdbcRules) { UseOdbcRules = useOdbcRules; } private ICollection Collection { get { return (ICollection)CurrentValues; } } private IDictionary Dictionary { get { return (IDictionary)CurrentValues; } } private Dictionary CurrentValues { get { Dictionary values = _currentValues; if (null == values) { values = new Dictionary (StringComparer.OrdinalIgnoreCase); _currentValues = values; } return values; } } object System.Collections.IDictionary.this[object keyword] { // delegate to this[string keyword] get { return this[ObjectToString(keyword)]; } set { this[ObjectToString(keyword)] = value; } } [Browsable(false)] public virtual object this[string keyword] { get { Bid.Trace(" %d#, keyword='%ls'\n", ObjectID, keyword); ADP.CheckArgumentNull(keyword, "keyword"); object value; if (CurrentValues.TryGetValue(keyword, out value)) { return value; } throw ADP.KeywordNotSupported(keyword); } set { ADP.CheckArgumentNull(keyword, "keyword"); bool flag = false; if (null != value) { string keyvalue = DbConnectionStringBuilderUtil.ConvertToString(value); DbConnectionOptions.ValidateKeyValuePair(keyword, keyvalue); flag = CurrentValues.ContainsKey(keyword); // store keyword/value pair CurrentValues[keyword] = keyvalue; } else { flag = Remove(keyword); } _connectionString = null; if (flag) { _propertyDescriptors = null; } } } [Browsable(false)] [DesignOnly(true)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)] [EditorBrowsableAttribute(EditorBrowsableState.Never)] public bool BrowsableConnectionString { get { return _browsableConnectionString; } set { _browsableConnectionString = value; _propertyDescriptors = null; } } [RefreshPropertiesAttribute(RefreshProperties.All)] [ResCategoryAttribute(Res.DataCategory_Data)] [ResDescriptionAttribute(Res.DbConnectionString_ConnectionString)] public string ConnectionString { get { Bid.Trace(" %d#\n", ObjectID); string connectionString = _connectionString; if (null == connectionString) { StringBuilder builder = new StringBuilder(); foreach(string keyword in Keys) { object value; if (ShouldSerialize(keyword) && TryGetValue(keyword, out value)) { string keyvalue = (null != value) ? Convert.ToString(value, CultureInfo.InvariantCulture) : (string)null; AppendKeyValuePair(builder, keyword, keyvalue, UseOdbcRules); } } connectionString = builder.ToString(); _connectionString = connectionString; } return connectionString; } set { Bid.Trace(" %d#\n", ObjectID); DbConnectionOptions constr = new DbConnectionOptions(value, null, UseOdbcRules); string originalValue = ConnectionString; Clear(); try { for(NameValuePair pair = constr.KeyChain; null != pair; pair = pair.Next) { if (null != pair.Value) { this[pair.Name] = pair.Value; } else { Remove(pair.Name); } } _connectionString = null; } catch(ArgumentException) { // restore original string ConnectionString = originalValue; _connectionString = originalValue; throw; } } } [Browsable(false)] public virtual int Count { get { return CurrentValues.Count; } } [Browsable(false)] public bool IsReadOnly { get { return false; } } [Browsable(false)] public virtual bool IsFixedSize { get { return false; } } bool System.Collections.ICollection.IsSynchronized { get { return Collection.IsSynchronized; } } [Browsable(false)] public virtual ICollection Keys { get { Bid.Trace(" %d#\n", ObjectID); return Dictionary.Keys; } } internal int ObjectID { get { return _objectID; } } object System.Collections.ICollection.SyncRoot { get { return Collection.SyncRoot; } } [Browsable(false)] public virtual ICollection Values { get { Bid.Trace(" %d#\n", ObjectID); System.Collections.Generic.ICollection keys = (System.Collections.Generic.ICollection )Keys; System.Collections.Generic.IEnumerator keylist = keys.GetEnumerator(); object[] values = new object[keys.Count]; for(int i = 0; i < values.Length; ++i) { keylist.MoveNext(); values[i] = this[keylist.Current]; Debug.Assert(null != values[i], "null value " + keylist.Current); } return new System.Data.Common.ReadOnlyCollection
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TextRunProperties.cs
- UniqueIdentifierService.cs
- FontEmbeddingManager.cs
- HTMLTagNameToTypeMapper.cs
- wmiutil.cs
- OneOfTypeConst.cs
- BamlLocalizableResourceKey.cs
- FindProgressChangedEventArgs.cs
- ToolboxDataAttribute.cs
- TraceSource.cs
- NumericExpr.cs
- EventProvider.cs
- FieldToken.cs
- ZipIOEndOfCentralDirectoryBlock.cs
- LinkAreaEditor.cs
- ConfigurationManagerHelperFactory.cs
- ExtensionQuery.cs
- CollectionMarkupSerializer.cs
- LoginView.cs
- EncodingConverter.cs
- BinHexEncoding.cs
- SamlAuthorityBinding.cs
- DefaultSerializationProviderAttribute.cs
- OracleDateTime.cs
- ProtectedUri.cs
- Point3DAnimation.cs
- XamlStyleSerializer.cs
- DataContext.cs
- SqlLiftWhereClauses.cs
- OneOfScalarConst.cs
- DeclarativeCatalogPart.cs
- SafeProcessHandle.cs
- printdlgexmarshaler.cs
- OleDbRowUpdatingEvent.cs
- ButtonField.cs
- CodeDomSerializerBase.cs
- SQLDateTime.cs
- BitmapSourceSafeMILHandle.cs
- ClipboardData.cs
- SiteOfOriginContainer.cs
- securitymgrsite.cs
- Dynamic.cs
- XmlObjectSerializerReadContextComplexJson.cs
- DrawingGroup.cs
- SoapReflectionImporter.cs
- SystemFonts.cs
- XmlSignificantWhitespace.cs
- WindowAutomationPeer.cs
- SqlTypeConverter.cs
- RetrieveVirtualItemEventArgs.cs
- ConfigsHelper.cs
- PrimaryKeyTypeConverter.cs
- AdRotator.cs
- RemotingConfiguration.cs
- ServiceDescriptionImporter.cs
- DrawingGroup.cs
- SqlServices.cs
- SessionEndedEventArgs.cs
- InnerItemCollectionView.cs
- TransformValueSerializer.cs
- StreamInfo.cs
- SqlXml.cs
- HatchBrush.cs
- _LocalDataStoreMgr.cs
- GridView.cs
- ContainerSelectorGlyph.cs
- StateChangeEvent.cs
- ListViewItemSelectionChangedEvent.cs
- PageRanges.cs
- SequenceFullException.cs
- DataStreams.cs
- SqlBulkCopyColumnMappingCollection.cs
- StringArrayConverter.cs
- PersonalizationAdministration.cs
- MediaPlayer.cs
- Pair.cs
- DataDocumentXPathNavigator.cs
- GeometryConverter.cs
- Literal.cs
- CompositeControlDesigner.cs
- RemoveStoryboard.cs
- CryptoApi.cs
- SqlUdtInfo.cs
- FileDataSourceCache.cs
- TypeExtensionConverter.cs
- SafeProcessHandle.cs
- PersonalizablePropertyEntry.cs
- EntityDataSourceChangingEventArgs.cs
- WebPartActionVerb.cs
- DataControlFieldCell.cs
- HtmlEmptyTagControlBuilder.cs
- ComponentDispatcher.cs
- EventSinkHelperWriter.cs
- ArrayHelper.cs
- MetadataItemCollectionFactory.cs
- CodeTypeDelegate.cs
- ForEachAction.cs
- DataServiceQueryProvider.cs
- RenderingBiasValidation.cs
- InkSerializer.cs