Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / OleDb / OleDbReferenceCollection.cs / 1305376 / OleDbReferenceCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.OleDb { using System; using System.Data; using System.Data.Common; using System.Data.ProviderBase; using System.Diagnostics; using System.Runtime.InteropServices; sealed internal class OleDbReferenceCollection : DbReferenceCollection { internal const int Closing = 0; internal const int Canceling = -1; internal const int CommandTag = 1; internal const int DataReaderTag = 2; override public void Add(object value, int tag) { base.AddItem(value, tag); } override protected bool NotifyItem(int message, int tag, object value) { bool canceling = (Canceling == message); if (CommandTag == tag) { ((OleDbCommand) value).CloseCommandFromConnection(canceling); } else if (DataReaderTag == tag) { ((OleDbDataReader) value).CloseReaderFromConnection(canceling); } else { Debug.Assert(false, "shouldn't be here"); } return false; // remove it from the collection } override public void Remove(object value) { base.RemoveItem(value); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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