A TextBox is a an rectangular area on the screen where you can enter text and it is common user interface element which is used in many types of software programs likes as web browsers, email clients, and word processors. When you click in a TextBox a flashing cursor is displayed which is indicating to you can begin typing and in Tablet automatically display the on screen keyboard. There are two different types of TextBox first one is text fields and second one is text areas. A text field is small box that allows to enter a single line of text and is used for entering basic values such as a name, number, or short phrase and we an also enter multiple lines of text.