Select shapefiles using OpenItemDialog in Pro SDK

azlotin

I am trying to configure BrowseProjectFilter of OpenItemDialog so only line shapefiles can be selected. Here is the code I am using:

BrowseProjectFilter browseFilter = BrowseProjectFilter.GetFilter("esri_browseDialogFilters_shapefiles");

OpenItemDialog browseDialog = new OpenItemDialog

{
   Title = "Select line shapefile",
   MultiSelect = false,
   BrowseFilter = browseFilter
};
browseDialog.ShowDialog();

This returns shapefiles of all geometry types. Is there a way to configure the filter to display shapefiles with line geometry type only? I have tried applying the AddCanBeTypeId below but it does not make any difference. 

browseFilter.AddCanBeTypeId("shapefile_line");

I am using Pro 2.6 SDK. Thanks!

azlotin

Thanks! I can provide more information now after additional testing. The code to open the OpenItemDialog is executed from a Pro button. When I launch Pro and click the button for the first time, the OpenItemDialog loads, but it shows all types of shapefiles (file geodatabases are excluded). After I cancel from the dialog and click the button again, the OpenItemDialog now correctly shows only line shapefiles. From this point on the filter works correctly. Any ideas why this is happening?

Here is the BrowseProjectFilter configuration:

BrowseProjectFilter browseFilter = BrowseProjectFilter.GetFilter("esri_browseDialogFilters_shapefiles");

browseFilter.AddCanBeTypeId("shapefile_general");

browseFilter.AddMustNotBeTypeId("shapefile_polygon");

browseFilter.AddMustNotBeTypeId("shapefile_point");