int NativeInterfaces.IFileDialogEvents.OnFileOk(NativeInterfaces.IFileDialog pfd)
{
int hr = NativeConstants.S_OK;
NativeInterfaces.IShellItem shellItem = null;
if (NativeMethods.SUCCEEDED(hr))
{
hr = FileSaveDialog.GetResult(out shellItem);
}
if (!NativeMethods.SUCCEEDED(hr))
{
throw Marshal.GetExceptionForHR(hr);
}
string pathName = null;
try
{
shellItem.GetDisplayName(NativeConstants.SIGDN.SIGDN_FILESYSPATH, out pathName);
}
finally
{
if (shellItem != null)
{
try
{
Marshal.ReleaseComObject(shellItem);
}
catch (Exception)
{
}
shellItem = null;
}
}
string pathNameResolved = ResolveName(pathName);
NativeInterfaces.IOleWindow oleWindow = (NativeInterfaces.IOleWindow)pfd;
try
{
IntPtr hWnd = IntPtr.Zero;
oleWindow.GetWindow(out hWnd);
Win32Window win32Window = new Win32Window(hWnd, oleWindow);
// File name/path validation
if (hr >= 0)
{
try
{
// Verify that these can be parsed correctly
string fileName = Path.GetFileName(pathNameResolved);
string dirName = Path.GetDirectoryName(pathNameResolved);
}
catch (Exception ex)
{
if (!FileDialogUICallbacks.ShowError(win32Window, pathNameResolved, ex))
{
throw;
}
hr = NativeConstants.S_FALSE;
}
}
if (hr >= 0)
{
// Overwrite existing file
if (!OverwritePrompt)
{
hr = NativeConstants.S_OK;
}
else if (File.Exists(pathNameResolved))
{
FileOverwriteAction action = FileDialogUICallbacks.ShowOverwritePrompt(win32Window, pathNameResolved);
switch (action)
{
case FileOverwriteAction.Cancel:
hr = NativeConstants.S_FALSE;
break;
case FileOverwriteAction.Overwrite:
hr = NativeConstants.S_OK;
break;
default:
throw new InvalidEnumArgumentException();
}
}
}
}
catch (Exception)
{
}
finally
{
try
{
Marshal.ReleaseComObject(oleWindow);
}
catch (Exception)
{
}
oleWindow = null;
}
return hr;
}
int NativeInterfaces.IFileDialogEvents.OnFileOk(NativeInterfaces.IFileDialog pfd)
{
int hr = NativeConstants.S_OK;
NativeInterfaces.IShellItemArray results = null;
FileOpenDialog.GetResults(out results);
uint count = 0;
results.GetCount(out count);
List<NativeInterfaces.IShellItem> items = new List<NativeInterfaces.IShellItem>();
List<NativeInterfaces.IShellItem> needLocalCopy = new List<NativeInterfaces.IShellItem>();
List<NativeInterfaces.IShellItem> cannotCopy = new List<NativeInterfaces.IShellItem>();
List<string> localPathNames = new List<string>();
for (uint i = 0; i < count; ++i)
{
NativeInterfaces.IShellItem item = null;
results.GetItemAt(i, out item);
items.Add(item);
}
foreach (NativeInterfaces.IShellItem item in items)
{
// If it's a file system object, nothing special needs to be done.
NativeConstants.SFGAO sfgaoAttribs;
item.GetAttributes((NativeConstants.SFGAO)0xffffffff, out sfgaoAttribs);
if ((sfgaoAttribs & NativeConstants.SFGAO.SFGAO_FILESYSTEM) == NativeConstants.SFGAO.SFGAO_FILESYSTEM)
{
string pathName = null;
item.GetDisplayName(NativeConstants.SIGDN.SIGDN_FILESYSPATH, out pathName);
localPathNames.Add(pathName);
}
else if ((sfgaoAttribs & NativeConstants.SFGAO.SFGAO_STREAM) == NativeConstants.SFGAO.SFGAO_STREAM)
{
needLocalCopy.Add(item);
}
else
{
cannotCopy.Add(item);
}
}
Marshal.ReleaseComObject(results);
results = null;
if (needLocalCopy.Count > 0)
{
IntPtr hwnd = IntPtr.Zero;
NativeInterfaces.IOleWindow oleWindow = (NativeInterfaces.IOleWindow)pfd;
oleWindow.GetWindow(out hwnd);
Win32Window win32Window = new Win32Window(hwnd, oleWindow);
IFileTransferProgressEvents progressEvents = this.FileDialogUICallbacks.CreateFileTransferProgressEvents();
ThreadStart copyThreadProc =
delegate()
{
try
{
progressEvents.SetItemCount(needLocalCopy.Count);
for (int i = 0; i < needLocalCopy.Count; ++i)
{
NativeInterfaces.IShellItem item = needLocalCopy[i];
string pathName = null;
progressEvents.SetItemOrdinal(i);
CopyResult result = CreateLocalCopy(item, progressEvents, out pathName);
if (result == CopyResult.Success)
{
localPathNames.Add(pathName);
}
else if (result == CopyResult.Skipped)
{
// do nothing
}
else if (result == CopyResult.CancelOperation)
{
hr = NativeConstants.S_FALSE;
break;
}
else
{
throw new InvalidEnumArgumentException();
}
}
}
finally
{
OperationResult result;
if (hr == NativeConstants.S_OK)
{
result = OperationResult.Finished;
}
else
{
result = OperationResult.Canceled;
}
progressEvents.EndOperation(result);
}
};
Thread copyThread = new Thread(copyThreadProc);
copyThread.SetApartmentState(ApartmentState.STA);
EventHandler onUIShown =
delegate(object sender, EventArgs e)
{
copyThread.Start();
};
this.cancelSink = new CancelableTearOff();
progressEvents.BeginOperation(win32Window, onUIShown, cancelSink);
this.cancelSink = null;
copyThread.Join();
Marshal.ReleaseComObject(oleWindow);
oleWindow = null;
}
this.FileNames = localPathNames.ToArray();
// If they selected a bunch of files, and then they all errored or something, then don't proceed.
if (this.FileNames.Length == 0)
{
hr = NativeConstants.S_FALSE;
}
foreach (NativeInterfaces.IShellItem item in items)
{
Marshal.ReleaseComObject(item);
}
items.Clear();
items = null;
GC.KeepAlive(pfd);
return hr;
}
