mcs/class/referencesource/mscorlib/system/io/filenotfoundexception.cs

   1 // ==++==
   2 //
   3 //   Copyright (c) Microsoft Corporation.  All rights reserved.
   4 //
   5 // ==--==
   6 /*============================================================
   7 **
   8 ** Class:  FileNotFoundException
   9 **
  10 ** <OWNER>Microsoft</OWNER>
  11 ** <OWNER>Microsoft</OWNER>
  12 **
  13 **
  14 ** Purpose: Exception for accessing a file that doesn't exist.
  15 **
  16 **
  17 ===========================================================*/
  18
  19 using System;
  20 using System.Runtime.Serialization;
  21 using System.Security.Permissions;
  22 using SecurityException = System.Security.SecurityException;
  23 using System.Globalization;
  24
  25 namespace System.IO {
  26     // Thrown when trying to access a file that doesn't exist on disk.
  27     [Serializable]
  28 [System.Runtime.InteropServices.ComVisible(true)]
  29     public class FileNotFoundException : IOException {
  30
  31         private String _fileName;  // The name of the file that isn't found.
  32         private String _fusionLog;  // fusion log (when applicable)
  33
  34         public FileNotFoundException()
  35             : base(Environment.GetResourceString("IO.FileNotFound")) {
  36             SetErrorCode(__HResults.COR_E_FILENOTFOUND);
  37         }
  38
  39         public FileNotFoundException(String message)
  40             : base(message) {
  41             SetErrorCode(__HResults.COR_E_FILENOTFOUND);
  42         }
  43
  44         public FileNotFoundException(String message, Exception innerException)
  45             : base(message, innerException) {
  46             SetErrorCode(__HResults.COR_E_FILENOTFOUND);
  47         }
  48
  49         public FileNotFoundException(String message, String fileName) : base(message)
  50         {
  51             SetErrorCode(__HResults.COR_E_FILENOTFOUND);
  52             _fileName = fileName;
  53         }
  54
  55         public FileNotFoundException(String message, String fileName, Exception innerException)
  56             : base(message, innerException) {
  57             SetErrorCode(__HResults.COR_E_FILENOTFOUND);
  58             _fileName = fileName;
  59         }
  60
  61         public override String Message
  62         {
  63             get {
  64                 SetMessageField();
  65                 return _message;
  66             }
  67         }
  68
  69         private void SetMessageField()
  70         {
  71             if (_message == null) {
  72                 if ((_fileName == null) &&
  73                     (HResult == System.__HResults.COR_E_EXCEPTION))
  74                     _message = Environment.GetResourceString("IO.FileNotFound");
  75
  76                 else if( _fileName != null)
  77                     _message = FileLoadException.FormatFileLoadExceptionMessage(_fileName, HResult);
  78             }
  79         }
  80
  81         public String FileName {
  82             get { return _fileName; }
  83         }
  84
  85         public override String ToString()
  86         {
  87             String s = GetType().FullName + ": " + Message;
  88
  89             if (_fileName != null && _fileName.Length != 0)
  90                 s += Environment.NewLine + Environment.GetResourceString("IO.FileName_Name", _fileName);
  91
  92             if (InnerException != null)
  93                 s = s + " ---> " + InnerException.ToString();
  94
  95             if (StackTrace != null)
  96                 s += Environment.NewLine + StackTrace;
  97
  98 #if FEATURE_FUSION
  99             try
 100             {
 101                 if(FusionLog!=null)
 102                 {
 103                     if (s==null)
 104                         s=" ";
 105                     s+=Environment.NewLine;
 106                     s+=Environment.NewLine;
 107                     s+=FusionLog;
 108                 }
 109             }
 110             catch(SecurityException)
 111             {
 112
 113             }
 114 #endif
 115             return s;
 116
 117         }
 118
 119         protected FileNotFoundException(SerializationInfo info, StreamingContext context) : base (info, context) {
 120             // Base class constructor will check info != null.
 121
 122             _fileName = info.GetString("FileNotFound_FileName");
 123             try
 124             {
 125                 _fusionLog = info.GetString("FileNotFound_FusionLog");
 126             }
 127             catch
 128             {
 129                 _fusionLog = null;
 130             }
 131
 132         }
 133
 134         private FileNotFoundException(String fileName, String fusionLog,int hResult)
 135             : base(null)
 136         {
 137             SetErrorCode(hResult);
 138             _fileName = fileName;
 139             _fusionLog=fusionLog;
 140             SetMessageField();
 141         }
 142
 143 #if FEATURE_FUSION
 144         public String FusionLog {
 145             [System.Security.SecuritySafeCritical]  // auto-generated
 146             [SecurityPermissionAttribute( SecurityAction.Demand, Flags = SecurityPermissionFlag.ControlEvidence | SecurityPermissionFlag.ControlPolicy)]
 147             get { return _fusionLog; }
 148         }
 149 #endif
 150
 151 #if FEATURE_SERIALIZATION
 152         [System.Security.SecurityCritical]  // auto-generated_required
 153         public override void GetObjectData(SerializationInfo info, StreamingContext context) {
 154             // Serialize data for our base classes.  base will verify info != null.
 155             base.GetObjectData(info, context);
 156
 157             // Serialize data for this class
 158             info.AddValue("FileNotFound_FileName", _fileName, typeof(String));
 159
 160             try
 161             {
 162                 info.AddValue("FileNotFound_FusionLog", FusionLog, typeof(String));
 163             }
 164             catch (SecurityException)
 165             {
 166             }
 167         }
 168 #endif
 169     }
 170 }
 171