private void SetDialogProperties(IFileOpenDialog dialog)
{
dialog.SetOptions(FOS.FOS_PICKFOLDERS | FOS.FOS_FORCEFILESYSTEM);
if (!string.IsNullOrEmpty(SelectedPath))
{
string parent = Path.GetDirectoryName(SelectedPath);
if (parent == null || !Directory.Exists(parent))
{
dialog.SetFileName(SelectedPath);
}
else
{
string folder = Path.GetFileName(SelectedPath);
dialog.SetFolder(CreateItemFromParsingName(parent));
dialog.SetFileName(folder);
}
}
}
private static String[] ShowDialogInner(IFileOpenDialog dialog, IntPtr parentWindowHandle, String title, String initialDirectory, String defaultFileName, IReadOnlyCollection <Filter> filters, Int32 selectedFilterZeroBasedIndex, FileOpenOptions flags)
{
flags = flags |
FileOpenOptions.NoTestFileCreate |
FileOpenOptions.PathMustExist |
FileOpenOptions.ForceFilesystem;
dialog.SetOptions(flags);
if (title != null)
{
dialog.SetTitle(title);
}
if (initialDirectory != null)
{
IShellItem2 initialDirectoryShellItem = Utility.ParseShellItem2Name(initialDirectory);
if (initialDirectoryShellItem != null)
{
dialog.SetFolder(initialDirectoryShellItem);
}
}
if (defaultFileName != null)
{
dialog.SetFileName(defaultFileName);
}
Utility.SetFilters(dialog, filters, selectedFilterZeroBasedIndex);
HResult result = dialog.Show(parentWindowHandle);
if (result == HResult.Ok)
{
IShellItemArray resultsArray;
dialog.GetResults(out resultsArray);
String[] fileNames = Utility.GetFileNames(resultsArray);
return(fileNames);
}
else if (result == HResult_Win32_Canceled)
{
// Cancelled by user.
return(null);
}
else
{
UInt32 win32ErrorCode = Utility.Win32ErrorFromHResult((UInt32)result);
throw new Win32Exception(error: (Int32)win32ErrorCode);
}
}
private static IReadOnlyList <String> ShowDialogInner(IFileOpenDialog dialog, IntPtr parentHWnd, String title, String initialDirectory, String defaultFileName, IReadOnlyCollection <Filter> filters, Int32 selectedFilterZeroBasedIndex, FileOpenOptions flags)
#endif
{
flags = flags |
FileOpenOptions.NoTestFileCreate |
FileOpenOptions.PathMustExist |
FileOpenOptions.ForceFilesystem;
dialog.SetOptions(flags);
if (title != null)
{
dialog.SetTitle(title);
}
if (initialDirectory != null)
{
#if NETCOREAPP3_1_OR_GREATER
IShellItem2?initialDirectoryShellItem = Utility.ParseShellItem2Name(initialDirectory);
#else
IShellItem2 initialDirectoryShellItem = Utility.ParseShellItem2Name(initialDirectory);
#endif
if (initialDirectoryShellItem != null)
{
dialog.SetFolder(initialDirectoryShellItem);
}
}
if (defaultFileName != null)
{
dialog.SetFileName(defaultFileName);
}
Utility.SetFilters(dialog, filters, selectedFilterZeroBasedIndex);
//
HResult hr = dialog.Show(parentHWnd);
if (hr.ValidateDialogShowHResult())
{
dialog.GetResults(out IShellItemArray resultsArray);
IReadOnlyList <String> fileNames = Utility.GetFileNames(resultsArray);
return(fileNames);
}
else
{
// User cancelled.
return(null);
}
}
private static String[] ShowDialogInner(IFileOpenDialog dialog, IntPtr parentHWnd, String title, String initialDirectory, String defaultFileName, IReadOnlyCollection <Filter> filters, Int32 selectedFilterZeroBasedIndex, FileOpenOptions flags)
{
flags = flags |
FileOpenOptions.NoTestFileCreate |
FileOpenOptions.PathMustExist |
FileOpenOptions.ForceFilesystem;
dialog.SetOptions(flags);
if (title != null)
{
dialog.SetTitle(title);
}
if (initialDirectory != null)
{
IShellItem2 initialDirectoryShellItem = Utility.ParseShellItem2Name(initialDirectory);
if (initialDirectoryShellItem != null)
{
dialog.SetFolder(initialDirectoryShellItem);
}
}
if (defaultFileName != null)
{
dialog.SetFileName(defaultFileName);
}
Utility.SetFilters(dialog, filters, selectedFilterZeroBasedIndex);
HResult result = dialog.Show(parentHWnd);
HResult cancelledAsHResult = Utility.HResultFromWin32((int)HResult.Win32ErrorCanceled);
if (result == cancelledAsHResult)
{
// Cancelled
return(null);
}
else
{
// OK
IShellItemArray resultsArray;
dialog.GetResults(out resultsArray);
String[] fileNames = Utility.GetFileNames(resultsArray);
return(fileNames);
}
}