Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / Common / SQLTypes / SQLCharsStorage.cs / 1305376 / SQLCharsStorage.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Xml; using System.IO; using System.Xml.Serialization; using System.Data.SqlTypes; using System.Diagnostics; using System.Globalization; using System.Collections; internal sealed class SqlCharsStorage : DataStorage { private SqlChars[] values; public SqlCharsStorage(DataColumn column) : base(column, typeof(SqlChars), SqlChars.Null, SqlChars.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(SqlChars)); } throw ExceptionBuilder.AggregateException(kind, DataType); } override public int Compare(int recordNo1, int recordNo2) { // throw ExceptionBuilder.IComparableNotDefined; return 0; } override public int CompareValueTo(int recordNo, Object value) { // throw ExceptionBuilder.IComparableNotDefined; 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] = SqlChars.Null; } else { values[record] = (SqlChars)value; } } override public void SetCapacity(int capacity) { SqlChars[] newValues = new SqlChars[capacity]; if (null != values) { Array.Copy(values, 0, newValues, 0, Math.Min(capacity, values.Length)); } values = newValues; } override public object ConvertXmlToObject(string s) { SqlString newValue = new SqlString(); 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 SqlChars((SqlString)tmp)); } override public string ConvertObjectToXml(object value) { Debug.Assert(!DataStorage.IsObjectNull(value), "we shouldn't have null here"); Debug.Assert((value.GetType() == typeof(SqlChars)), "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 SqlChars[recordCount]; } override protected void CopyValue(int record, object store, BitArray nullbits, int storeIndex) { SqlChars[] typedStore = (SqlChars[]) store; typedStore[storeIndex] = values[record]; nullbits.Set(storeIndex, IsNull(record)); } override protected void SetStorage(object store, BitArray nullbits) { values = (SqlChars[]) 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
- FlagsAttribute.cs
- DataGridViewColumnEventArgs.cs
- DataGridViewSelectedCellsAccessibleObject.cs
- basecomparevalidator.cs
- MemberNameValidator.cs
- QilTernary.cs
- TriState.cs
- ExpandCollapsePattern.cs
- DataGridViewHeaderCell.cs
- ResolveCriteriaApril2005.cs
- _SslStream.cs
- GridViewRowCollection.cs
- AccessibleObject.cs
- TripleDESCryptoServiceProvider.cs
- FilteredDataSetHelper.cs
- OleDbDataReader.cs
- TriggerBase.cs
- CustomTypeDescriptor.cs
- CmsInterop.cs
- ObjectViewListener.cs
- TemplateInstanceAttribute.cs
- AuthenticationSection.cs
- SizeF.cs
- DataGrid.cs
- XPathPatternBuilder.cs
- TypeSystemHelpers.cs
- OleStrCAMarshaler.cs
- DetailsViewCommandEventArgs.cs
- LayoutUtils.cs
- OledbConnectionStringbuilder.cs
- FlowDecision.cs
- ScriptRegistrationManager.cs
- MonthChangedEventArgs.cs
- ResourceReferenceExpressionConverter.cs
- ExpressionBuilderContext.cs
- ClientData.cs
- DataControlFieldTypeEditor.cs
- Vector.cs
- AsyncOperationLifetimeManager.cs
- DataGridViewColumn.cs
- WindowsScrollBar.cs
- DataGridViewTopRowAccessibleObject.cs
- XslCompiledTransform.cs
- FormDocumentDesigner.cs
- StylusPointProperties.cs
- ReaderWriterLock.cs
- NativeMethods.cs
- HttpPostProtocolImporter.cs
- precedingsibling.cs
- ProxyWebPartManager.cs
- UnsafeMethods.cs
- BuilderPropertyEntry.cs
- ExpressionWriter.cs
- ToolboxBitmapAttribute.cs
- SafeMILHandle.cs
- QilSortKey.cs
- AnnotationResourceChangedEventArgs.cs
- SimpleHandlerBuildProvider.cs
- DBCSCodePageEncoding.cs
- CompositeCollection.cs
- TextEndOfLine.cs
- datacache.cs
- ComponentChangingEvent.cs
- CatalogZone.cs
- GetCardDetailsRequest.cs
- PngBitmapEncoder.cs
- DoubleLinkListEnumerator.cs
- DragSelectionMessageFilter.cs
- KeyValueInternalCollection.cs
- ScrollChangedEventArgs.cs
- LassoSelectionBehavior.cs
- CheckBoxFlatAdapter.cs
- InfoCardRSAPKCS1KeyExchangeFormatter.cs
- SystemIPv4InterfaceProperties.cs
- DateTimeValueSerializer.cs
- DataGrid.cs
- Process.cs
- TextBox.cs
- _IPv6Address.cs
- TdsParserStaticMethods.cs
- PropertyInfo.cs
- XmlDocument.cs
- EventTask.cs
- XmlSerializerFactory.cs
- ResourceKey.cs
- ImportDesigner.xaml.cs
- WebPartTransformerCollection.cs
- LayoutManager.cs
- RegularExpressionValidator.cs
- PolyBezierSegment.cs
- DataKeyCollection.cs
- MdiWindowListStrip.cs
- JsonObjectDataContract.cs
- Model3DCollection.cs
- SizeF.cs
- XdrBuilder.cs
- GeometryConverter.cs
- HtmlForm.cs
- ExpressionBindingsDialog.cs
- CheckBox.cs