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namespace Connections { [Guid( 64fd1be8-d803-4fb6-893a-3799a278168c )] public class TableProvider : System.Web.UI.WebControls.WebParts.WebPart, IWebPartTable { private DataTable _dtData; public TableProvider() { this.ExportMode = WebPartExportMode.All; _dtData = new DataTable(); DataColumn objColumnA = new DataColumn(); objColumnA.DataType = typeof(string); objColumnA.ColumnName = ColumnA ; _dtData.Columns.Add(objColumnA); DataColumn objColumnB = new DataColumn(); objColumnB.DataType = typeof(string); objColumnB.ColumnName = ColumnB ; _dtData.Columns.Add(objColumnB); DataRow objRow1 = _dtData.NewRow(); objRow1[ ColumnA ] = table provider column A value row 1 ; objRow1[ ColumnB ] = table provider column B value row 1 ; _dtData.Rows.Add(objRow1); DataRow objRow2 = _dtData.NewRow(); objRow2[ ColumnA ] = table provider column A value row 2 ; objRow2[ ColumnB ] = table provider column B value row 2 ; _dtData.Rows.Add(objRow2); } protected override void Render(HtmlTextWriter writer) { writer.Write( Provider TableProvider ); }

Once this is done, Cocoa Touch notifies the application delegate that the application has finished launching. We are finished examining the MainWindow file for now, so close that file and return to Xcode.

CGContextAddLineToPoint(context, lastTouch.x, lastTouch.y); CGContextStrokePath(context); break; case kRectShape: CGContextAddRect(context, currentRect); CGContextDrawPath(context, kCGPathFillStroke); break; case kEllipseShape: CGContextAddEllipseInRect(context, currentRect); CGContextDrawPath(context, kCGPathFillStroke); break; case kImageShape: break; default: break; } }

In your Xcode project, double-click the IVBrickerViewController.xib file in the Resources group. This will open the file in Interface Builder, as shown in Figure 3 5.

Because we want to paint both the ellipse and the rectangle in a solid color, we add a call to set the fill color using currentColor:

[ConnectionProvider( my table provider )] public IWebPartTable GetTableProvider() { return this; } public void GetTableData(TableCallback callback) { callback.Invoke(_dtData.Rows); } public System.ComponentModel.PropertyDescriptorCollection Schema { get { return TypeDescriptor.GetProperties(_dtData.DefaultView[0]); } } } } The next step consists of creating a table consumer web part. Like before, we will add a member variable to the consumer web part that can hold a list of data. You can only pass data that supports the ICollection interface (located within the System.Collections namespace). The member variable is shown in the next code fragment: private ICollection _collData; public ICollection Data { get { return _collData; } set { _collData = value; } } You also need to implement a method that can obtain a reference to the table provider web part. This method, which we will call GetProvider(), calls the GetTableData() method of the table provider web part and passes a callback method called GetTable() to the provider. The following code fragment shows the implementation for the GetProvider() method: [ConnectionConsumer( my table consumer )] public void GetProvider(IWebPartTable objProvider) { TableCallback objCallback = new TableCallback(GetTable); objProvider.GetTableData(objCallback); } The GetTable() method is used as a callback method in the GetProvider() method. This method assigns the table of data to the Data property. The implementation for the GetTable() method is shown in the next code fragment: public void GetTable(ICollection objTable) { if (objTable != null) Data = (ICollection) objTable; } The complete code for the table consumer web part is shown in Listing 5-16.

The IVBrickerViewController.xib file shows the Cocoa Touch components that make up the view controller for the app's main view. There is the view itself, represented by the component called View. And then there is IVBrickerViewController.xib File's Owner, which is an object of type IVBrickerViewController. You will note that this is the same type as the view controller in MainWindow.xib. This is no coincidence they are the same object. The View component in this Interface Builder file is where we will be placing the different UI components, such as text labels, that make up our main game screen.

CGContextSetFillColorWithColor(context, currentColor.CGColor);

Double-click the View component in Interface Builder to open a window with the visual layout of the view. Right now, it's empty and has a dark-gray background. Bring up the Inspector window by pressing I. We will use the Inspector window, shown in Figure 3 6, to change various properties of our view.

Figure 3 6. The Inspector window (the one on the right) lets you change properties in your UI components. The View window (in the middle) is where you will place UI components.