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Data binding is a means for associating Windows Forms controls with one or more data sources. We saw a little of this concept in chapter 10 for list controls such as the ListBox and ComboBox classes. These controls provide the DataSource and DataMember properties for binding the list displayed by the control to a specific source of data. In this chapter we will explore data binding in more detail. While we will keep the discussion focused on Windows Forms classes, many of the examples and discussions carry over to databases and the System.Data namespace where classes such as DataSet and DataTable are found. The application in this section will be similar in spirit to the MyAlbumEditor application created in chapters 10 and 11. A ComboBox control will display a list of available albums, and the photographs in the selected album will appear on the remainder of the form. Our new application will be called MyAlbumData and is shown in figure 17.1.

Figure 17.1 Our new application will include a tab control with a data grid on one tab page and a set of data-bound controls on a second tab page.

If you re at a four-year university or some other institution with a broad educational basis, there will be a great many other resources you can take advantage of and subjects you can study Some, of course, will be mandated by the school s distribution requirements The following sections contain a list of subjects that I think are particularly valuable for incipient game developers, in addition to the ones described in the previous section

We begin with the DataGrid control, which displays a data source in tabular format. We will look at this class in some detail, and discuss the concept of simple data binding later in the chapter.

A data grid is just that: a grid in which data is displayed. The DataGrid class encapsulates this concept, allowing various collections of data to be displayed and manipulated by a user. The concept of data binding is central to the DataGrid class, as data is typically displayed in the control by binding an existing database table or collection class to the data grid object. As shown in figure 17.1, the DataGrid class displays data as a set of rows and columns. The grid in general represents a specific collection of data, and this case represents a PhotoAlbum instance. Each row, in turn, represents a specific item in the overall collection, and each column represents a specific field that can be assigned to each item. In our application, each row will represent a Photograph object, and each column a possible property of a photograph. There are a number of terms related to DataGrid controls. A summary of these is shown in figure 17.2 as they relate to our application. An overview of the DataGrid class is provided in .NET Table 17.1.