c# barcode zebra printer WORKING WITH DATA in vb

Development qr barcode in vb WORKING WITH DATA

The DpwsMetdata class (see Listing 6-18) provides the Get method and contains the ThisModel and ThisDevice descriptions and information about the host service and the hosted services of a device via the Relationship property that is a DpwsRelationship instance. Listing 6-18. The Dpws.Client.Discovery.DpwsMetadata Class using System; using System.Xml; namespace Dpws.Client.Discovery { public class DpwsMetadata { public readonly DpwsThisModel ThisModel; public readonly DpwsThisDevice ThisDevice; public readonly DpwsRelationship Relationship; public DpwsMetadata(XmlReader reader); } } The Host property of the DpwsRelationship class provides you a host service description. First, you need to check if the device has a host service by comparing the Host property value against null. Its ServiceID property provides the endpoint (logical) address of the service, and the transport address (the physical device address followed by the logical service address) of the service you can obtain with host.EndpointRefs[0].Address.AbsoluteUri. Each service provides further a list of service type namespaces it relates to. The list contains only the value of the ServiceNamespace property of the DpwsHostedService object and the prefix of the service namespace. You will get all items with the ServiceTypes collection via the metadata description. The following piece of code will print the metadata for a device s host service: DpwsMexService host = metadata.Relationship.Host; if (host != null) { Debug.Print("Host:"); Debug.Print("\tServiceID: " + host.ServiceID); Debug.Print("\tAddress: " + host.EndpointRefs[0].Address.AbsoluteUri); Debug.Print("\tTypes:"); for (int t = 0; t < host.ServiceTypes.Count; ++t) { DpwsServiceType serviceType = host.ServiceTypes[t]; Debug.Print("\t\tName = " + serviceType.TypeName); Debug.Print("\t\tNamespace = " + serviceType.NamespaceUri); Debug.Print(""); } }

vertices[i++] = new VertexPositionTexture(new Vector3(4, 1, -5), new Vector2(0.25f, 0.5f)); vertices[i++] = new VertexPositionTexture(new Vector3(7, 5, -5), new Vector2(0.5f, 0)); vertices[i++] = new VertexPositionTexture(new Vector3(10, 1, -5), new Vector2(1, 1)); myVertexDeclaration = new VertexDeclaration(device, VertexPositionTexture.VertexElements); } The nine vertices you re defining here have texture coordinates corresponding to the three triangles of Figure 5-4. By specifying these texture coordinates, you indicate the triangles will have the same colors as the triangles in Figure 5-4.

Texture2D grassTexture = content.Load<Texture2D>("grass"); Texture2D heightMap = content.Load<Texture2D>("heightmap"); int width = heightMap.Width; int height = heightMap.Height; float[,] heightData = TerrainUtils.LoadHeightData(heightMap); VertexPositionNormalTexture[] vertices = TerrainUtils.CreateTerrainVertices(heightData); int[] indices = TerrainUtils.CreateTerrainIndices(width, height); vertices = TerrainUtils.GenerateNormalsForTriangleStrip(vertices, indices); VertexPositionNormalTexture[,] vertexArray = Reshape1Dto2D<VertexPositionNormalTexture>(vertices, width, height); rootNode = new QTNode(vertexArray, device, grassTexture, 64); Finally, you end up with a 1D array of vertices. The constructor of your QTNode, however, requires a 2D array, so the last lines call the Reshape1Dto2D method, which you find here: private T[,] Reshape1Dto2D<T>(T[] vertices, int width, int height) { T[,] vertexArray = new T[width, height]; int i=0; for (int h = 0; h < height; h++) for (int w = 0; w < width; w++) vertexArray[w, h] = vertices[i++]; return vertexArray; } Once again, this is a generic method, so it allows you to transform any 1D array to a 2D array. With this 2D array of vertices available, add this final line to your LoadContent method: rootNode = new QTNode(vertexArray, device, grassTexture, 64); This single line generates your whole quadtree. You pass in the 2D array of vertices and a maximum size of 64. As long as the size of your quads is larger than 64, they will keep on being split up in child quads.

Silverlight! (the Arabic equivalent of Silverlight Rocks!) Your StackPanel should look like what I have in Figure 4-30.

a.SoundOff(); b.SoundOff(); c.SoundOff(); } } This code produces the following output: MyName Nemo, MyNumber 28 MyName Nemo, MyNumber 7 MyName Bill, MyNumber 0

Figure 24-6. The anatomy of a critical region A lock statement consists of the lock keyword and a parameter that is used to control access to the critical region. The parameter must be shared by all of the Tasks that will use the critical region, and the convention is to create an object specifically for use in the lock statement, like this:

The steps to create a child object that doesn t need to load itself with default values from the database are as follows: 1. The factory method (internal scope) is called. 2. The factory method creates the object locally by using the new keyword and possibly passing parameter values. 3. The child object does any initialization in the constructor method. 4. The child object is returned. 5. From the child object s perspective, only one method is called, as follows: Any constructor This is illustrated in Figure 7-2.

if(hudIsDragging) { hud.center = CGPointMake(touchPoint.x + dragOffset.x, touchPoint.y + dragOffset.y); }