We had a request from a customer about the RadOpenFileDialog not showing the preview of the actual photo in the list.
Is this possible? With the default explorer version of OpenFileDialog, you can see image previews (second photo).
I'm not sure what happened here but this dialog box has gone from extremely slow to unusable.
Sure, I'm on a network but that shouldn't matter. My local box is the initial folder and it's a normal, regular, business level working machine with a few hundred files in some folders and more/less in others. NO FOLDERS with shocking numbers of files... Yet this takes 2-4 MINUTES to load:
If Me.dialogOpenFolder.ShowDialog() = DialogResult.OK Then
FolderName = Me.dialogOpenFolder.FileName
FolderName = ""
The only other time this dialog is references is in FormLoad and here's that reference:
dialogOpenFolder.OpenFolderDialogForm.ThemeName = Windows8Theme1.ThemeName
I'd love to continue using this control since visually its light-years ahead of the built-in Folder Select dialog box...but as stated its unusable.
Is there *ANYTHING* I can do to speed this up? It feels like its going out there and collecting all folder data from my entire network (which is massive) - can this be turned off or WISIWIG?
Any help would be lovely :)
I use the RadOpenFileDialog with the MultiSelect property set to True. My test folder contains 105 files with sizes about 1 to 2 kb and all the same extension. If I select multiple files with <ctrl>+<mouse left> the selection behaves as expected. If I select multiple files with <shift>+<mouse left> I have to wait al long time. Unselecting the file by clicking on an unselected entry is also very slow. If I try to select all files with <ctrl>+<A> the dialog remains busy and does not respond anymore.
My code for testing is as simple as this:
private static void TestFileOpenDialog()
RadOpenFileDialog dlg = new RadOpenFileDialog();
dlg.InitialDirectory = @"path to files"; // 105 files with sizes from 1 to 2 kb
dlg.Filter = "my files (*.mal)|.mal";
dlg.FilterIndex = 0;
dlg.MultiSelect = true;
DialogResult result = dlg.ShowDialog();