I have 2 child items added to a property grid: phone number and phone number extension.

Phone numbers are related with a customer record, and there can be as many phone number records as desired by the user. But only the primary phone number with the extension is shown.

The item Title would display the phone number count for this customer eg: Phone Number (3).

There will be a "Dial" InplaceButton added to the phone number item. Clicking the button will call the OS dialer.

I'd like to give the user another option to display all the phone numbers (3 in this example) for this customer.

How would I go about calling another form to display the phone number list? 

I've tried another button but this doesn't work, or double-clicking the Title area, or maybe even a right-click menu with "Display Phone Numbers".

Responses appreciated 

I like your idea. I'll give it a try.

Regards,

Mark Stuart