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/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / TypeLoadException.cs / 1 / TypeLoadException.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================================== ** ** Class: TypeLoadException ** ** ** Purpose: The exception class for type loading failures. ** ** =============================================================================*/ namespace System { using System; using System.Globalization; using System.Runtime.Remoting; using System.Runtime.Serialization; using System.Runtime.CompilerServices; using System.Security.Permissions; [Serializable()] [System.Runtime.InteropServices.ComVisible(true)] public class TypeLoadException : SystemException, ISerializable { public TypeLoadException() : base(Environment.GetResourceString("Arg_TypeLoadException")) { SetErrorCode(__HResults.COR_E_TYPELOAD); } public TypeLoadException(String message) : base(message) { SetErrorCode(__HResults.COR_E_TYPELOAD); } public TypeLoadException(String message, Exception inner) : base(message, inner) { SetErrorCode(__HResults.COR_E_TYPELOAD); } public override String Message { get { SetMessageField(); return _message; } } private void SetMessageField() { if (_message == null) { if ((ClassName == null) && (ResourceId == 0)) _message = Environment.GetResourceString("Arg_TypeLoadException"); else { if (AssemblyName == null) AssemblyName = Environment.GetResourceString("IO_UnknownFileName"); if (ClassName == null) ClassName = Environment.GetResourceString("IO_UnknownFileName"); _message = String.Format(CultureInfo.CurrentCulture, GetTypeLoadExceptionMessage(ResourceId), ClassName, AssemblyName, MessageArg); } } } public String TypeName { get { if (ClassName == null) return String.Empty; return ClassName; } } // This is called from inside the EE. private TypeLoadException(String className, String assemblyName, String messageArg, int resourceId) : base(null) { SetErrorCode(__HResults.COR_E_TYPELOAD); ClassName = className; AssemblyName = assemblyName; MessageArg = messageArg; ResourceId = resourceId; // Set the _message field eagerly; debuggers look at this field to // display error info. They don't call the Message property. SetMessageField(); } protected TypeLoadException(SerializationInfo info, StreamingContext context) : base(info, context) { if (info == null) throw new ArgumentNullException("info"); ClassName = info.GetString("TypeLoadClassName"); AssemblyName = info.GetString("TypeLoadAssemblyName"); MessageArg = info.GetString("TypeLoadMessageArg"); ResourceId = info.GetInt32("TypeLoadResourceID"); } [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern String GetTypeLoadExceptionMessage(int resourceId); //We can rely on the serialization mechanism on Exception to handle most of our needs, but //we need to add a few fields of our own. [SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.SerializationFormatter)] public override void GetObjectData(SerializationInfo info, StreamingContext context) { if (info == null) throw new ArgumentNullException("info"); base.GetObjectData(info, context); info.AddValue("TypeLoadClassName", ClassName, typeof(String)); info.AddValue("TypeLoadAssemblyName", AssemblyName, typeof(String)); info.AddValue("TypeLoadMessageArg", MessageArg, typeof(String)); info.AddValue("TypeLoadResourceID", ResourceId); } // If ClassName != null, GetMessage will construct on the fly using it // and ResourceId (mscorrc.dll). This allows customization of the // class name format depending on the language environment. private String ClassName; private String AssemblyName; private String MessageArg; internal int ResourceId; } }
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