visual basic

visual basic

1. Tool box

   • The Toolbox window shows the controls that you can add to Visual Studio projects. To open the Toolbox, choose Toolbox from the View menu.

2. form

   • In Windows Forms, a form is a visual surface on which information is displayed to the user. Normally, Windows Forms applications are compiled by adding controls to forms and developing responses to user actions, such as mouse clicks or key presses. A control is a user interface element (UI) that allows you to display information or accept data entry.

3. properties of objects

4. type of data

   • 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.

5. Nested Control Structures (Visual Basic)

   • You can place control statements inside other control statements, for example an If...Then...Else block within a For...Next loop. A control statement placed inside another control statement is said to be nested.
     • Nesting Levels Control structures in Visual Basic can be nested to as many levels as you want. It is common practice to make nested structures more readable by indenting the body of each one. The integrated development environment (IDE) editor automatically does this. In the following example, the procedure sumRows adds together the positive elements of each row of the matrix.

6. Windows Forms Controls by Function

   • Windows Forms offers controls and components that perform a number of functions. The following table lists the Windows Forms controls and components according to general function. In addition, where multiple controls exist that serve the same function, the recommended control is listed with a note regarding the control it superseded. In a separate subsequent table, the superseded controls are listed with their recommended replacements.
     • Recommended Controls and Components by Function

7. Visual Basic for Applications

   • Microsoft VBA (Visual Basic for Applications) is the Microsoft Visual Basic macro language that is used to program Windows applications and is included in several Microsoft applications. VBA allows users and programmers to expand the functionality of programs in the Microsoft Office suite. Visual Basic for Applications is an almost complete subset of Visual Basic 5.0 and 6.0. Microsoft VBA is integrated into Microsoft Office applications, such as Outlook, Word, Excel, Access and Powerpoint. Practically anything that can be programmed in Visual Basic 5.0 or 6.0 can also be done within an Office document, with the only limitation that the final product can not be compiled separately from the document, sheet or database in which it was created; that is, it becomes a macro (or rather super macro). This macro can be installed or distributed by simply copying the document, presentation or database.

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