/// <summary>
/// Copy or move file from source to destination with progress callback
/// </summary>
/// <param name="source">source file</param>
/// <param name="destination">destination file</param>
/// <param name="overwrite">true if destination must be overwritten if exists</param>
/// <param name="move">true if move, false=copy</param>
/// <param name="callback">progress callback method to be called</param>
public static void CopyOrMoveFile(string source, string destination, bool overwrite, bool move, CopyFileCallback callback)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (destination == null)
{
throw new ArgumentNullException("destination");
}
new FileIOPermission(FileIOPermissionAccess.Read, source).Demand();
new FileIOPermission(FileIOPermissionAccess.Write, destination).Demand();
CopyProgressData progData = null;
NativeMethods.CopyProgressRoutine cpr = null;
if (callback != null)
{
progData = new CopyProgressData(source, destination, callback);
cpr = progData.CallbackHandler;
}
bool cancel = false;
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
try
{
bool ret = true;
if (move)
{
NativeMethods.MoveFileExFlags fm = NativeMethods.MoveFileExFlags.MOVEFILE_COPY_ALLOWED;
if (overwrite)
{
fm |= NativeMethods.MoveFileExFlags.MOVEFILE_REPLACE_EXISTING;
}
ret = NativeMethods.MoveFileWithProgress(source, destination, cpr, IntPtr.Zero, (int)fm);
}
else
{
NativeMethods.CopyFileExFlags f = NativeMethods.CopyFileExFlags.COPY_FILE_ALLOW_DECRYPTED_DESTINATION;
if (!overwrite)
{
f |= NativeMethods.CopyFileExFlags.COPY_FILE_FAIL_IF_EXISTS;
}
ret = NativeMethods.CopyFileEx(source, destination, cpr, IntPtr.Zero, ref cancel, (int)f);
}
if (progData != null && progData.Exception != null)
{
Utils.Rethrow(progData.Exception);
}
if (!ret)
{
var w = new Win32Exception();
if (w.NativeErrorCode == 2)
{
throw new FileNotFoundException(w.Message, source);
}
throw new IOException(w.Message, w);
}
return;
}
catch (MissingMethodException) { }
catch (SecurityException) { }
}
// The old fashioned way
if (source != destination)
{
if (overwrite)
{
var fi = new FileInfo(destination);
if (fi.Exists && (fi.Attributes & (FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System)) != 0)
{
fi.Attributes &= ~(FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System);
}
fi.Delete();
}
if (move)
{
File.Move(source, destination);
}
else
{
File.Copy(source, destination, overwrite);
}
return;
}
}
/// <summary>
/// Copy or move file from source to destination with progress callback
/// </summary>
/// <param name="source">source file</param>
/// <param name="destination">destination file</param>
/// <param name="overwrite">true if destination must be overwritten if exists</param>
/// <param name="move">true if move, false=copy</param>
/// <param name="callback">progress callback method to be called</param>
public static void CopyOrMoveFile(string source, string destination, bool overwrite, bool move, CopyFileCallback callback)
{
if (source == null) throw new ArgumentNullException("source");
if (destination == null)
throw new ArgumentNullException("destination");
new FileIOPermission(FileIOPermissionAccess.Read, source).Demand();
new FileIOPermission(FileIOPermissionAccess.Write, destination).Demand();
CopyProgressData progData = null;
NativeMethods.CopyProgressRoutine cpr = null;
if (callback != null)
{
progData = new CopyProgressData(source, destination, callback);
cpr = progData.CallbackHandler;
}
bool cancel = false;
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
try
{
bool ret = true;
if (move)
{
NativeMethods.MoveFileExFlags fm = NativeMethods.MoveFileExFlags.MOVEFILE_COPY_ALLOWED;
if (overwrite)
fm |= NativeMethods.MoveFileExFlags.MOVEFILE_REPLACE_EXISTING;
ret = NativeMethods.MoveFileWithProgress(source, destination, cpr, IntPtr.Zero, (int)fm);
}
else
{
NativeMethods.CopyFileExFlags f = NativeMethods.CopyFileExFlags.COPY_FILE_ALLOW_DECRYPTED_DESTINATION;
if (!overwrite)
f |= NativeMethods.CopyFileExFlags.COPY_FILE_FAIL_IF_EXISTS;
ret = NativeMethods.CopyFileEx(source, destination, cpr, IntPtr.Zero, ref cancel, (int)f);
}
if (progData != null && progData.Exception != null)
Utils.Rethrow(progData.Exception);
if (!ret)
{
var w = new Win32Exception();
if (w.NativeErrorCode == 2)
throw new FileNotFoundException(w.Message, source);
throw new IOException(w.Message, w);
}
return;
}
catch (MissingMethodException) { }
catch (SecurityException) { }
}
// The old fashioned way
if (source != destination)
{
if (overwrite)
{
var fi = new FileInfo(destination);
if (fi.Exists && (fi.Attributes & (FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System))!=0)
fi.Attributes&=~(FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System);
fi.Delete();
}
if (move)
File.Move(source, destination);
else
File.Copy(source, destination, overwrite);
return;
}
}
