Visual Basic

Visual Basic

1. FORM

   • The form is the first object or control that is displayed in Visual Basic and constitutes the screen or window over which other objects or controls are placed such as labels, text controls, buttons, etc. and of course the necessary code of our programs, therefore will constitute the User Interface.
   • PROPERTIES
     • Name
     • Caption
     • Backcolor
     • Forecolor

2. Tool box

   • Select objects
     • Selecting objects is the only element in the toolbox that is not drawn by a control. When you select it, you can only resize or move a control that has already been drawn on a form.
   • Label
     • It allows you to maintain text that you do not want the user to change, such as a title below a graphic.
   • ComboBox
     • Allows you to draw a text box and a combination list box. The user can choose an item from the list or specify a value in the text box.
   • Textbox
     • Contains text that the user can specify or change.
   • Image
     • Displays a graphic image of a bitmap, an icon, or a metafile on the form. The images that are displayed in an Image control are only decorative and use fewer resources than an image frame.
   • CommandButton property
     • Create a button that the user can choose to carry out a command.

3. Controls

4. properties of objects

   • The data type of a programming element refers to the type of data it can contain and how it stores the data. The data types are applied to all values ​​that can be stored in the computer's memory or participate in the evaluation of an expression. Each variable, literal, constant, enumeration, property, procedure parameter, procedure argument, and return value of a procedure has a data type.
   • variable
   • Literal
   • constant
   • enumeration
   • Property
   • Procedure parameter

5. Control structures

   • They are used to control the flow of the program in a function, these structures allow to control by means of a condition the execution or not of a line or set of lines of codes
   • IF- THEN- ELSE
     • allows through a condition that is executed or not
   • While-When
     • This structure will be repeated without stopping, determining codes while fulfilling a function
   • Select-case
     • Select evaluates a condition and case contains values

6. Type of data

7. applications and programs

   • Ease of use and learning. ... Integrated development environment. ... Integration of different programming languages ​​in the same Visual Studio development environment (Visual Basic, Visual C ++, Visual C #). Possibility of creating applications for Microsoft Office. Access to the functions of the Windows API.

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