48 lines
1.6 KiB
C#
48 lines
1.6 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="OleDbReferenceCollection.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">Microsoft</owner>
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// <owner current="true" primary="false">Microsoft</owner>
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//------------------------------------------------------------------------------
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namespace System.Data.OleDb {
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using System;
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using System.Data;
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using System.Data.Common;
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using System.Data.ProviderBase;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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sealed internal class OleDbReferenceCollection : DbReferenceCollection {
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internal const int Closing = 0;
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internal const int Canceling = -1;
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internal const int CommandTag = 1;
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internal const int DataReaderTag = 2;
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override public void Add(object value, int tag) {
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base.AddItem(value, tag);
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}
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override protected void NotifyItem(int message, int tag, object value) {
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bool canceling = (Canceling == message);
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if (CommandTag == tag) {
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((OleDbCommand) value).CloseCommandFromConnection(canceling);
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}
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else if (DataReaderTag == tag) {
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((OleDbDataReader) value).CloseReaderFromConnection(canceling);
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}
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else {
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Debug.Assert(false, "shouldn't be here");
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}
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}
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override public void Remove(object value) {
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base.RemoveItem(value);
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}
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}
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}
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