Using the Cloud Files API environment , is it possible to define typed custom properties? The only method I can find is Windows.Storage.Provider.StorageProviderItemProperties.SetAsync()
. This takes a list of StorageProviderItemProperty
whose Value
is string
.
However, custom properties defined with the Property Description Schema can have types and offer a lot more control.
For instance, "file size" and "dates" get special treatment in the column headers.
One can define custom Windows Properties and register them using the PSRegisterPropertySchema function . Note registration and unregistration needs admin right so is usually done at install/uninstall time.
The "special treatment" you see is defined in the schema.
Now, adding these properties in aa Shell View is only possible per file type as stated here: Initializing Property Handlers / Before you begin
Property handlers are always associated with specific file types; thus, if your file format contains properties that require a custom property handler, you should always register a unique file name extension for each file format.
For cloud based placeholder files, you can register a custom property handler with the package itself using the desktop3:ExtendedPropertyHandler Xml element in the manifest.
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