I have a desktop app form with a repeater control. It is a list of bank transactions that do a poor job of identifying the associated customer. Someone needs to assign the customer to each transaction. Most of the fields are read only but are necessary for someone to try and identify the existing customer from a list (Not typed freely). The customer list could get lengthy. The user can start typing the customer name move through the combo box list or scroll. Not sure performance will be a factor. Is one easier to use/more intuitive than the other?
Edit: the user will have several records to process, so data entry efficiency in primary. Anyone using it will get specific training. I just worry that the repeated combo boxes will have to many record and have to resort to lazy loading.
Use a combo box for each record with the client list.
Or a single List of customers, so when the user double-clicks on a customer from the list (on the right), the textbox is populated with the Customer Name. Like wise, if the currently selected customer is desired, double-click on the customer textbox to populate it.