You are developing a Windows Presentation Foundation (WPF) application that display pricing and inventory.
List box's ItemsSource property has decimal and string types. Decimals represent price and strings represents the folowing markup is defined as follows.

You need to ensure that data templates are used to format the strings without changes and the decimals as ..
Which markup segment should you insert at line 05 ?（）

You are developing a Windows Forms application that contains a DataGridView control. The DataGridView capture the customer's name, address, and phone number.
You have been asked to provide data validation in a DataGridView to prevent users from leaving the..
You need to ensure that users cannot tab out of the name field without entering data
What should you do ?（）