public bool?ShowDialog()
{
var openDialogCoClass = new INativeFileOpenDialog(); // Template method to allow derived dialog to create actual specific COM coclass (e.g. FileOpenDialog or FileSaveDialog)
try
{
ApplyNativeSettings(openDialogCoClass); // Apply outer properties to native dialog instance
var parentWindow = Helpers.GetDefaultOwnerWindow();
int hresult = openDialogCoClass.Show(GetHandleFromWindow(parentWindow));
if (ErrorHelper.Matches(hresult, Win32ErrorCode.ERROR_CANCELLED)) // Create return information
{
return(false);
}
openDialogCoClass.GetResults(out var resultsArray);
resultsArray.GetCount(out var count);
if (count > 0)
{
resultsArray.GetItemAt(0, out var shellItem);
shellItem.GetDisplayName(NativeMethods.SIGDN.DESKTOPABSOLUTEPARSING, out var file);
FileName = file;
}
return(true);
}
finally
{
Marshal.ReleaseComObject(openDialogCoClass);
}
}
public Nullable <bool> ShowDialog(Window window)
{
INativeFileOpenDialog openDialogCoClass = new INativeFileOpenDialog();
try
{
ApplyNativeSettings(openDialogCoClass);
window ??= Helpers.GetDefaultOwnerWindow();
int hresult = openDialogCoClass.Show(GetHandleFromWindow(window));
if (ErrorHelper.Matches(hresult, Win32ErrorCode.ERROR_CANCELLED))
{
return(false);
}
openDialogCoClass.GetResults(out IShellItemArray resultsArray);
resultsArray.GetCount(out uint count);
if (count <= 0)
{
return(true);
}
resultsArray.GetItemAt(0, out IShellItem shellItem);
shellItem.GetDisplayName(NativeMethods.SIGDN.DESKTOPABSOLUTEPARSING, out string file);
FileName = file;
FileNames = new string[count];
for (uint i = 0; i < count; i++)
{
resultsArray.GetItemAt(i, out shellItem);
shellItem.GetDisplayName(NativeMethods.SIGDN.DESKTOPABSOLUTEPARSING, out file);
FileNames[i] = file;
}
return(true);
}
finally
{
Marshal.ReleaseComObject(openDialogCoClass);
}
}