Page 83 - TCS ICT Book 8

The City School 2021-2022

Textbox

It is used to accept textual input from the user. The user can add strings, numerical
values and a combination of those.

Combo Box Developing Applications

It is similar to the list but it works as a dropdown for the user. A user can click on the

downwards aero on the right side and select any item

DateTime Picker

This control allows the user pick the date and time via a Calendar and a clock.

4.6. Variables 4 2.5

A variable is nothing but a name given
to a storage area that our programs can

manipulate.
A variable is a container of data in a computer’s

memory where the computer stores the “hello” “a”
different types of data and this could be

numeric or text. To create and access these
Variable (data containers) we name them so

we can call them in our program where it is
necessary.

Public and Private Variables
var a=1 Public variable

Public variables are variables that are accessible to

the whole program. Private variables are variables
that are accessible only to a certain part of the var b=2 Private variable

program or code.

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