Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / Common / SQLTypes / SQLBytesStorage.cs / 1305376 / SQLBytesStorage.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Collections; using System.Data.SqlClient; using System.Data.SqlTypes; using System.Diagnostics; using System.Globalization; using System.IO; using System.Xml; using System.Xml.Serialization; internal sealed class SqlBytesStorage : DataStorage { private SqlBytes[] values; public SqlBytesStorage(DataColumn column) : base(column, typeof(SqlBytes), SqlBytes.Null, SqlBytes.Null) { } override public Object Aggregate(int[] records, AggregateType kind) { try { switch (kind) { case AggregateType.First: if (records.Length > 0) { return values[records[0]]; } return null;// no data => null case AggregateType.Count: int count = 0; for (int i = 0; i < records.Length; i++) { if (!IsNull(records[i])) count++; } return count; } } catch (OverflowException) { throw ExprException.Overflow(typeof(SqlBytes)); } throw ExceptionBuilder.AggregateException(kind, DataType); } override public int Compare(int recordNo1, int recordNo2) { return 0; } override public int CompareValueTo(int recordNo, Object value) { return 0; } override public void Copy(int recordNo1, int recordNo2) { values[recordNo2] = values[recordNo1]; } override public Object Get(int record) { return values[record]; } override public bool IsNull(int record) { return (values[record].IsNull); } override public void Set(int record, Object value) { if ((value == DBNull.Value) || (value == null)){ values[record] = SqlBytes.Null; } else { values[record] = (SqlBytes)value; } } override public void SetCapacity(int capacity) { SqlBytes[] newValues = new SqlBytes[capacity]; if (null != values) { Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length)); } values = newValues; } override public object ConvertXmlToObject(string s) { SqlBinary newValue = new SqlBinary(); string tempStr =string.Concat("", s, ""); // this is done since you can give fragmet to reader, bug 98767 StringReader strReader = new StringReader(tempStr); IXmlSerializable tmp = newValue; using (XmlTextReader xmlTextReader = new XmlTextReader(strReader)) { tmp.ReadXml(xmlTextReader); } return (new SqlBytes((SqlBinary)tmp)); } override public string ConvertObjectToXml(object value) { Debug.Assert(!DataStorage.IsObjectNull(value), "we shouldn't have null here"); Debug.Assert((value.GetType() == typeof(SqlBytes)), "wrong input type"); StringWriter strwriter = new StringWriter(FormatProvider); using (XmlTextWriter xmlTextWriter = new XmlTextWriter (strwriter)) { ((IXmlSerializable)value).WriteXml(xmlTextWriter); } return (strwriter.ToString ()); } override protected object GetEmptyStorage(int recordCount) { return new SqlBytes[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { SqlBytes[] typedStore = (SqlBytes[]) store; typedStore[storeIndex] = values[record]; nullbits.Set(storeIndex, IsNull(record)); } override protected void SetStorage(object store, BitArray nullbits) { values = (SqlBytes[]) store; //SetNullStorage(nullbits); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- CheckBoxPopupAdapter.cs
- KeyTime.cs
- SynchronizationHandlesCodeDomSerializer.cs
- PlatformCulture.cs
- AlignmentYValidation.cs
- SqlExpander.cs
- BufferAllocator.cs
- KerberosRequestorSecurityToken.cs
- SqlLiftIndependentRowExpressions.cs
- Point.cs
- WebPartMenu.cs
- TextBox.cs
- sitestring.cs
- NamespaceList.cs
- Brushes.cs
- AlphabeticalEnumConverter.cs
- BaseTreeIterator.cs
- SkewTransform.cs
- LayoutTable.cs
- StyleXamlParser.cs
- XmlValidatingReaderImpl.cs
- FormatterConverter.cs
- CapabilitiesRule.cs
- DbConnectionInternal.cs
- SmiRequestExecutor.cs
- VerticalAlignConverter.cs
- ToolStripItemEventArgs.cs
- DecimalConstantAttribute.cs
- XmlException.cs
- ExtensionElementCollection.cs
- AdapterDictionary.cs
- ImageMetadata.cs
- BooleanSwitch.cs
- DnsPermission.cs
- ExternalException.cs
- DataBoundControlDesigner.cs
- PageThemeParser.cs
- DeadCharTextComposition.cs
- TokenBasedSet.cs
- XmlSchemaSequence.cs
- ValidationErrorEventArgs.cs
- TreeNodeCollection.cs
- Thread.cs
- CheckBoxPopupAdapter.cs
- CultureMapper.cs
- FormView.cs
- BamlRecordReader.cs
- ScrollBarRenderer.cs
- PointConverter.cs
- XmlText.cs
- CompressedStack.cs
- OrthographicCamera.cs
- FileVersionInfo.cs
- IOException.cs
- MarkerProperties.cs
- TableSectionStyle.cs
- SecurityHeaderTokenResolver.cs
- PersonalizationAdministration.cs
- UnitControl.cs
- ArgIterator.cs
- MaskedTextBoxTextEditor.cs
- MailMessageEventArgs.cs
- MatchSingleFxEngineOpcode.cs
- ReachPrintTicketSerializer.cs
- StubHelpers.cs
- DataGridViewRowPostPaintEventArgs.cs
- WebPartAuthorizationEventArgs.cs
- CodeDesigner.cs
- GridViewAutomationPeer.cs
- TabletDeviceInfo.cs
- CounterSampleCalculator.cs
- FormsAuthenticationEventArgs.cs
- ExpressionBuilderContext.cs
- SchemaCreator.cs
- RadioButtonFlatAdapter.cs
- BuilderInfo.cs
- ObjectDataSourceView.cs
- QueryMath.cs
- DropSource.cs
- QueryableFilterUserControl.cs
- InkCanvasFeedbackAdorner.cs
- AudioBase.cs
- PageStatePersister.cs
- StackBuilderSink.cs
- TraceListener.cs
- ContextMenuStripGroup.cs
- MobileUserControlDesigner.cs
- TempEnvironment.cs
- ShapeTypeface.cs
- XmlValueConverter.cs
- SymDocumentType.cs
- ResourceReferenceExpression.cs
- SqlDataSourceStatusEventArgs.cs
- SurrogateDataContract.cs
- AddInIpcChannel.cs
- IResourceProvider.cs
- NativeMethods.cs
- CompositionTarget.cs
- LogicalTreeHelper.cs
- FontDifferentiator.cs