FileNotFoundException.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / IO / FileNotFoundException.cs / 1 / FileNotFoundException.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  FileNotFoundException 
**
** 
** Purpose: Exception for accessing a file that doesn't exist.
**
**
===========================================================*/ 

using System; 
using System.Runtime.Serialization; 
using System.Security.Permissions;
using SecurityException = System.Security.SecurityException; 
using System.Globalization;

namespace System.IO {
    // Thrown when trying to access a file that doesn't exist on disk. 
    [Serializable]
[System.Runtime.InteropServices.ComVisible(true)] 
    public class FileNotFoundException : IOException { 

        private String _fileName;  // The name of the file that isn't found. 
        private String _fusionLog;  // fusion log (when applicable)

        public FileNotFoundException()
            : base(Environment.GetResourceString("IO.FileNotFound")) { 
            SetErrorCode(__HResults.COR_E_FILENOTFOUND);
        } 
 
        public FileNotFoundException(String message)
            : base(message) { 
            SetErrorCode(__HResults.COR_E_FILENOTFOUND);
        }

        public FileNotFoundException(String message, Exception innerException) 
            : base(message, innerException) {
            SetErrorCode(__HResults.COR_E_FILENOTFOUND); 
        } 

        public FileNotFoundException(String message, String fileName) : base(message) 
        {
            SetErrorCode(__HResults.COR_E_FILENOTFOUND);
            _fileName = fileName;
        } 

        public FileNotFoundException(String message, String fileName, Exception innerException) 
            : base(message, innerException) { 
            SetErrorCode(__HResults.COR_E_FILENOTFOUND);
            _fileName = fileName; 
        }

        public override String Message
        { 
            get {
                SetMessageField(); 
                return _message; 
            }
        } 

        private void SetMessageField()
        {
            if (_message == null) { 
                if ((_fileName == null) &&
                    (HResult == System.__HResults.COR_E_EXCEPTION)) 
                    _message = Environment.GetResourceString("IO.FileNotFound"); 

                else if( _fileName != null) 
                    _message = FileLoadException.FormatFileLoadExceptionMessage(_fileName, HResult);
            }
        }
 
        public String FileName {
            get { return _fileName; } 
        } 

        public override String ToString() 
        {
            String s = GetType().FullName + ": " + Message;

            if (_fileName != null && _fileName.Length != 0) 
                s += Environment.NewLine + String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("IO.FileName_Name"), _fileName);
 
            if (InnerException != null) 
                s = s + " ---> " + InnerException.ToString();
 
            if (StackTrace != null)
                s += Environment.NewLine + StackTrace;

            try 
            {
                if(FusionLog!=null) 
                { 
                    if (s==null)
                        s=" "; 
                    s+=Environment.NewLine;
                    s+=Environment.NewLine;
                    s+=FusionLog;
                } 
            }
            catch(SecurityException) 
            { 

            } 
            return s;
        }

        protected FileNotFoundException(SerializationInfo info, StreamingContext context) : base (info, context) { 
            // Base class constructor will check info != null.
 
            _fileName = info.GetString("FileNotFound_FileName"); 
            try
            { 
                _fusionLog = info.GetString("FileNotFound_FusionLog");
            }
            catch
            { 
                _fusionLog = null;
            } 
 
        }
 
        private FileNotFoundException(String fileName, String fusionLog,int hResult)
            : base(null)
        {
            SetErrorCode(hResult); 
            _fileName = fileName;
            _fusionLog=fusionLog; 
            SetMessageField(); 
        }
 
        public String FusionLog {
            [SecurityPermissionAttribute( SecurityAction.Demand, Flags = SecurityPermissionFlag.ControlEvidence | SecurityPermissionFlag.ControlPolicy)]
            get { return _fusionLog; }
        } 

 
 	[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.SerializationFormatter)] 		 
        public override void GetObjectData(SerializationInfo info, StreamingContext context) {
            // Serialize data for our base classes.  base will verify info != null. 
            base.GetObjectData(info, context);

            // Serialize data for this class
            info.AddValue("FileNotFound_FileName", _fileName, typeof(String)); 

            try 
            { 
                info.AddValue("FileNotFound_FusionLog", FusionLog, typeof(String));
            } 
            catch (SecurityException)
            {
            }
        } 
    }
}

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