VB.NET SQL: Getting multiple columns to go together as 1 DisplayMember in a ColumnBox?

I have a combobox created and a table where I have first and last name both as columns. I want my columnbox to list the names of the first and last names put together and I'm not sure how to progress. I tried changing my DisplayMember to "First Name" but that only displays the first name when I run the program, I want BOTH.I have a combobox created and a table where I h