59 lines
1.9 KiB
C#
59 lines
1.9 KiB
C#
// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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/*=============================================================================
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**
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** Class: ArgumentNullException
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**
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**
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** Purpose: Exception class for null arguments to a method.
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**
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** Date: April 28, 1999
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**
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=============================================================================*/
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namespace System {
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using System;
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// The ArgumentException is thrown when an argument
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// is null when it shouldn't be.
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//
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//| <include path='docs/doc[@for="ArgumentNullException"]/*' />
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public class ArgumentNullException : ArgumentException
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{
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private static String _nullMessage = null;
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private static String NullMessage {
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get {
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// Don't bother with synchronization here. A duplicated string
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// is not a major problem.
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if (_nullMessage == null)
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_nullMessage = "ArgumentNull_Generic";
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return _nullMessage;
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}
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}
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// Creates a new ArgumentNullException with its message
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// string set to a default message explaining an argument was null.
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//| <include path='docs/doc[@for="ArgumentNullException.ArgumentNullException"]/*' />
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public ArgumentNullException()
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: base(NullMessage) {
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// Use E_POINTER - COM used that for null pointers. Description is "invalid pointer"
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}
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//| <include path='docs/doc[@for="ArgumentNullException.ArgumentNullException1"]/*' />
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public ArgumentNullException(String paramName)
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: base(NullMessage, paramName) {
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}
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//| <include path='docs/doc[@for="ArgumentNullException.ArgumentNullException2"]/*' />
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public ArgumentNullException(String paramName, String message)
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: base(message, paramName) {
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}
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}
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}
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