FileFormatException.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Base / System / IO / FileFormatException.cs / 1305600 / FileFormatException.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
// Description: The FileFormatException class is thrown when an input file or a data stream that is supposed to conform 
// to a certain file format specification is malformed.
// 
// History: 
//  10/21/2004 : mleonov - Created
// 
//---------------------------------------------------------------------------

using System;
using System.Runtime.Serialization; 
using System.Security;
using System.Security.Permissions; 
using System.Windows; 
using MS.Internal.WindowsBase;
 
namespace System.IO
{
    /// 
    /// The FileFormatException class is thrown when an input file or a data stream that is supposed to conform 
    /// to a certain file format specification is malformed.
    ///  
    [Serializable()] 
    public class FileFormatException : FormatException, ISerializable
    { 
        /// 
        /// Creates a new instance of FileFormatException class.
        /// This constructor initializes the Message property of the new instance to a system-supplied message that describes the error,
        /// such as "An input file or a data stream does not conform to the expected file format specification." 
        /// This message takes into account the current system culture.
        ///  
        public FileFormatException() 
            : base(SR.Get(SRID.FileFormatException))
        {} 

        /// 
        /// Creates a new instance of FileFormatException class.
        /// This constructor initializes the Message property of the new instance with a specified error message. 
        /// 
        /// The message that describes the error. 
        public FileFormatException(string message) 
            : base(message)
        {} 

        /// 
        /// Creates a new instance of FileFormatException class.
        /// This constructor initializes the Message property of the new instance with a specified error message. 
        /// The InnerException property is initialized using the innerException parameter.
        ///  
        /// The error message that explains the reason for the exception. 
        /// The exception that is the cause of the current exception.
        public FileFormatException(string message, Exception innerException) 
            : base(message, innerException)
        {}

        ///  
        /// Creates a new instance of FileFormatException class.
        /// This constructor initializes the Message property of the new instance to a system-supplied message that describes the error and includes the file name, 
        /// such as "The file 'sourceUri' does not conform to the expected file format specification." 
        /// This message takes into account the current system culture.
        /// The SourceUri property is initialized using the sourceUri parameter. 
        /// 
        /// The Uri of a file that caused this error.
        public FileFormatException(Uri sourceUri)
            : base( 
                sourceUri == null
                ? SR.Get(SRID.FileFormatException) 
                : SR.Get(SRID.FileFormatExceptionWithFileName, sourceUri)) 
        {
            _sourceUri = sourceUri; 
        }

        /// 
        /// Creates a new instance of FileFormatException class. 
        /// This constructor initializes the Message property of the new instance using the message parameter.
        /// The content of message is intended to be understood by humans. 
        /// The caller of this constructor is required to ensure that this string has been localized for the current system culture. 
        /// The SourceUri property is initialized using the sourceUri parameter.
        ///  
        /// The Uri of a file that caused this error.
        /// The message that describes the error.
        public FileFormatException(Uri sourceUri, String message)
            : base(message) 
        {
            _sourceUri = sourceUri; 
        } 

        ///  
        /// Creates a new instance of FileFormatException class.
        /// This constructor initializes the Message property of the new instance to a system-supplied message that describes the error and includes the file name,
        /// such as "The file 'sourceUri' does not conform to the expected file format specification."
        /// This message takes into account the current system culture. 
        /// The SourceUri property is initialized using the sourceUri parameter.
        /// The InnerException property is initialized using the innerException parameter. 
        ///  
        /// The Uri of a file that caused this error.
        /// The exception that is the cause of the current exception. 
        public FileFormatException(Uri sourceUri, Exception innerException)
            : base(
                sourceUri == null
                ? SR.Get(SRID.FileFormatException) 
                : SR.Get(SRID.FileFormatExceptionWithFileName, sourceUri),
                innerException) 
        { 
            _sourceUri = sourceUri;
        } 

        /// 
        /// Creates a new instance of FileFormatException class.
        /// This constructor initializes the Message property of the new instance using the message parameter. 
        /// The content of message is intended to be understood by humans.
        /// The caller of this constructor is required to ensure that this string has been localized for the current system culture. 
        /// The SourceUri property is initialized using the sourceUri parameter. 
        /// The InnerException property is initialized using the innerException parameter.
        ///  
        /// The Uri of a file that caused this error.
        /// The message that describes the error.
        /// The exception that is the cause of the current exception.
        public FileFormatException(Uri sourceUri, String message, Exception innerException) 
            : base(message, innerException)
        { 
            _sourceUri = sourceUri; 
        }
 
        /// 
        /// Creates a new instance of FileFormatException class and initializes it with serialized data.
        /// This constructor is called during deserialization to reconstitute the exception object transmitted over a stream.
        ///  
        /// The object that holds the serialized object data.
        /// The contextual information about the source or destination. 
        protected FileFormatException(SerializationInfo info, StreamingContext context) : base(info, context) 
        {
            string sourceUriString = info.GetString("SourceUri"); 
            if (sourceUriString != null)
                _sourceUri = new Uri(sourceUriString, UriKind.RelativeOrAbsolute);
        }
 
        /// 
        /// Sets the SerializationInfo object with the file name and additional exception information. 
        ///  
        /// The object that holds the serialized object data.
        /// The contextual information about the source or destination. 
        ///
        ///     Critical: calls Exception.GetObjectData which LinkDemands
        ///     PublicOK: a demand exists here
        /// 
        [SecurityCritical]
        [SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.SerializationFormatter)] 
        public override void GetObjectData(SerializationInfo info, StreamingContext context) 
        {
            if (info == null) 
                throw new ArgumentNullException("info");

            base.GetObjectData(info, context);
 
            Uri sourceUri = SourceUri;
            info.AddValue( 
                "SourceUri", 
                sourceUri == null
                    ? null 
                    : sourceUri.GetComponents(UriComponents.SerializationInfoString, UriFormat.SafeUnescaped),
                typeof(String)
                );
        } 

        ///  
        /// Returns the name of a file that caused this exception. This property may be equal to an empty string 
        /// if obtaining the file path that caused the error was not possible.
        ///  
        /// The file name.
        public Uri SourceUri
        {
            get 
            {
                // Security: defense in depth, make sure the caller has path discovery permission for local file case. 
                if (_sourceUri != null && _sourceUri.IsAbsoluteUri && _sourceUri.IsFile) 
                    SecurityHelper.DemandPathDiscovery(_sourceUri.LocalPath);
                return _sourceUri; 
            }
        }

        private Uri _sourceUri; 
    }
} 
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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