Visual understanding environment download

#Visual understanding environment download code

We will discuss DTCs in more detail in Chapter 6 and throughout the remainder of the is a framework for developing user interfaces and advanced single-page applications. That DTC will be used every time you drag the field from the recordset and drop it onto a page. You can right-click a field and assign it a specific DTC.

The default is based upon the field's data type. Each of these fields has a default data-bound DTC. You can also see the fields in the GetCustomers recordset displayed beneath it. The Data Environment as displayed in Project Explorer under global.asa.ДЇigure 5-1 shows the Northwind data connection and the GetCustomers data command. You can see how the DE is attached to global.asa.ДЇigure 5-1. Drag a table from Data View and drop it into an ASP file under a Recordset DTC created from dragging and dropping a data command object onto the pageДЇigure 5-1 shows the Data Environment as it looks in Project Explorer with one data connection and one data command.Drag the fields from a data command object's recordset and drop them onto an ASP Web page to automatically create data-bound DTCs.Drag objects from the Data Environment and drop them into an ASP file to automatically create data-bound DTCs.

#Visual understanding environment download code

Because your database code can be used repeatedly, building, debugging, and maintaining applications is much easier.ДЄ useful feature of the DE is the variety of drag-and-drop options. You don't need to create new controls for each Web page, and you need to create controls for the same set of records only once. The Data Environment allows you to create and manage all your DTCs in one location. Now you can create a data command object once and use it to quickly create Recordset controls by dropping them into an ASP file in the editor.Дata-bound design-time controls (DTCs) are the basic building blocks for connecting to databases and displaying data on your Web pages. You don't have to continually re-create a Recordset control on different ASP Web pages for the same set of records as we did in Visual InterDev 1.0. You can create data command objects that live at the DE level in your project and can be used by any ASP file in the project. Using the Data Environment is the easiest way to create data-driven web pages. Any data connections you add are displayed in the DataEnvironment folder. The DataEnvironment folder is displayed beneath the global.asa file in Project Explorer. The Visual InterDev 6.0 Data Environment is created automatically when a data connection is added to a project. This integration is likely to increase as we see new versions of Microsoft development tools in Visual Studio. Moving from Visual InterDev to Visual Basic, and vice versa, also becomes easier.

The consistency of using the Data Environment in both Visual InterDev and Visual Basic makes developing applications in either environment easy. The Data Environment is a new object-based wrapper around ActiveX Data Objects (ADO) and is used in both Visual InterDev 6.0 and Microsoft Visual Basic 6.0. It also provides a layer of abstraction, allowing you to create and modify objects that represent your data independently of the database. The Data Environment provides a standard interface for creating data-related objects and for placing them on Web pages. The Data Environment (DE) in Microsoft Visual InterDev 6.0 collects your data connection and data manipulation code in one place.