This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
The VisList Classes
The two VisList classes are really quite similar. The customer version operates on a ListBox and adds the names to it.
//A VisList class for the ListBox
public class ProductList : VisList {
private ListBox list;
//-----
public ProductList(ListBox lst) {
list = lst;
}
//-----
public void addLine(Product p) {
list.Items.Add (p.getName() );
}
//-----
public void removeLine(int num) {
if(num >=0 && num < list.Items.Count ){
list.Items.Remove (num);
}
}
}
The ProductTable version of the VisList is quite similar except that it adds both the product name and quantity to the two columns of the grid.
public class GridList:VisList {
private DataGrid grid;
private DataTable dtable;
private GridAdapter gAdapter;
//-----
public GridList(DataGrid grd) {
grid = grd;
dtable = new DataTable("Products");
DataColumn column = new DataColumn("ProdName");
dtable.Columns.Add(column);
column = new DataColumn("Qty");
dtable.Columns.Add(column);
grid.DataSource = dtable;
gAdapter = new GridAdapter (grid);
}
//-----
public void addLine(Product p) {
gAdapter.Add (p);
}