Controlling Which Files with the Same Ext The TOpenDialog presents to the user

1

Hi All,

Our application works with a number different file types that all the same extension. When the user invokes Import, I want to present the user with only the files that can be imported (they could be one of 3 types that all have the same extension.)

Can I iterate through the current folder and add only the importable files into the TOpendialog file display area?

regards

Brian

2

This used to be part of I think it was raize extended shell views etc because I think you’ll need to make your own dialog unless you can see an event in the open dialog for filtering. Maybe check the open dialogs from jvcl and raize also

3

Can’t you just use the TOpenDialog.Filter ?

https://docwiki.embarcadero.com/Libraries/Alexandria/en/Vcl.Dialogs.TOpenDialog.Filter

4

If you can filter by the full filename (not just extension), the TOpenDialog would probably be simplest option.

There is also the following: Creating Custom File Dialogs: ShellBrowser Delphi Components (embarcadero.com)

Otherwise something like the following might be usable.

Create a form, and drop on a TShellTreeView component.
(Obtainable with some of the older Delphi Demos, you will need to alter it for your Delphi)

RAD Studio Demo Code / Code / [r2029] /branches/RadStudio_XE6/Object Pascal/VCL/ShellControls (sourceforge.net)

Also have a TDBGrid component on the form. (and an underlying memory table)

Then in the onchange event of the TShellTreeView component

  • Empty the TDBGrid
  • Check if any of the files with the required extension are present in the chosen directory.
  • Presumably check the contents of the files to determine if they are the required ones
  • Add matching files to the TDBGrid