Database Reference
In-Depth Information
through the radio button control. he users are able to upload an image ile with the ile upload
control and present the image in a picture box. With the form, the front-end users do not have
to know SQL statements such as INSERT, UPDATE, and DELETE for data management. he
controls on the form are linked to a data source such as a relational database. he data presented
on the form are extracted from the linked database. Modiications made to the data on the form
are saved to the corresponding tables in the back-end database. In Figure 9.1, several commonly
used controls are displayed. hese application controls are used to help the front-end users to
manipulate data. Table 9.1 describes a list of controls.
Report : Report is another important database application that is used to display data extracted
from a database in a certain format. Similar to a form, a report contains controls and graphics.
Unlike a form, the main task of a report is to display data. A report may include some components
such as Report Header, Page Header, Detail, Page Footer, and Report Footer. To make it easier
to read, a report is often divided into several sections. In such a case, a report may have multiple
header components, multiple detail sections, and multiple footer components. Figure 9.2 shows
an example of a report.
he report in Figure 9.2 has a binding navigator that is used to navigate through each student.
he binding navigator has a tool strip interface that contains items such as Save and Print. Each
student's grade and other class-related information are displayed in a table.
Table 9.1
Descript ions of Controls
Control Name
Description
Binding Navigator
This control is used to navigate data sets displayed in a form or report.
Check Box
This control allows users to select options in a list of check boxes.
Combo Box
This control can be used to display and edit a drop-down list of items.
Command Button
This control triggers an action such as starting, stopping, or
interrupting a process.
FormView
This control is used to display and edit a single record in a table.
GridView
This control can be used to display data in a customizable grid.
Image
The image control is a repository for images.
Label
The label control can be used to display text as a label.
List Box
This can be used to display a list of text and graphical items.
Menu Strip
This control provides custom menus.
Picture Box
This control displays pictures in a frame.
Radio Button
This control allows users to select an option by clicking at a radio button.
Table
This control lays out its content in a table.
Text Box
This control can be used to display and edit text.
Tool Strip
This control creates tool bars.
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