When a DataTip is open while debugging in Visual Studio it appears the only way to get to a specific object property is scrolling with the mouse.
This can get very cumbersome as some objects can have hundreds of properties and scrolling to a property near the bottom takes a long time.
Yes, I know I can scroll faster if I hover the mouse over the bottom edge and pin a property once I found it but it can still take a long time to get to the property and pin it.
I've tried various combinations with Ctrl and Alt but what ever key I press the DataTip is promptly closed...
Once the DataTip has focus, you don't have to use the mouse. You can use the PgUp/PgDn (Page Up/Page Down) keys on your keyboard. But you're right: There is not a way to get to the end of the list or to get to items that start with a certain letter. When I need to do that often I take one of two approaches:
If possible, I create a [temporary] variable assignment after the code-line of interest and ensure that the variable gets assigned to the property of interest.
Create a watch variable and interact with that.
Open an Immediate Window and paste a copy of the object-instance name in question. Once in the Immediate Window, IntelliSense is available as soon as you type the "."--you can then type the letter of the property in question and drill-down as needed more quickly.
(Probaby the best tip!)