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|
using System.Text;
using System.IO;
using System.ServiceModel;
using System.Runtime;
using System.Runtime.Serialization;
using System.Runtime.Remoting;
namespace test_1
{
[ServiceContract]
public interface IClientContract
{
[OperationContract(IsOneWay = true)]
void GetImagesFromServer(List<CustomImage> img);
[OperationContract(IsOneWay = true)]
void GetUpdateFromFileShare(CustomImage img);
}
[ServiceContract(CallbackContract = typeof(IClientContract))]
public interface IServerContract
{
[OperationContract(IsOneWay = false)]
void StartWatcher(string path);
[OperationContract(IsOneWay = false)]
void GetImagesFromPathAtFirstLoad(string path);
}
[DataContract]
public class CustomImage
{
public enum ChangeType
{
Add,
Delete
}
[DataMember]
public string Name { get; set; }
[DataMember]
public string FullPath { get; set; }
[DataMember]
public Byte[] Img { get; set; }
[DataMember]
public ChangeType Modification { get; set; }
}
[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple, InstanceContextMode = InstanceContextMode.Single)]
public class ServiceImplementation : IServerContract
{
#region Member Fields
private System.IO.FileSystemWatcher fsw = null;
private OperationContext context = null;
private IClientContract client = null;
#endregion
#region IServerContract Members
/// <summary>
/// Start the FileSystemWatcher on the server.
/// </summary>
/// <param name="path">The path to the directory to watch.</param>
public void StartWatcher(string path)
{
try
{
context = OperationContext.Current;
client = context.GetCallbackChannel<IClientContract>();
fsw = new System.IO.FileSystemWatcher();
fsw.Path = path;
fsw.IncludeSubdirectories = true;
fsw.Filter = "*.*";
fsw.Created += new System.IO.FileSystemEventHandler(GetUpdateFileFromFSW);
fsw.Deleted += new System.IO.FileSystemEventHandler(GetUpdateFileFromFSW);
fsw.EnableRaisingEvents = true;
}
catch (Exception ex)
{
throw new FaultException<ServerException>(new ServerException(
string.Format("An error occured !{0}{1}", Environment.NewLine, ex.Message)));
}
}
/// <summary>
/// Retrieve the images which are in the specified folder during the startup.
/// </summary>
/// <param name="path">The folder to get the images.</param>
public void GetImagesFromPathAtFirstLoad(string path)
{
var imgList = new List<CustomImage>();
CustomImage image = null;
foreach (var file in Directory.GetFiles(path))
{
try
{
if (Path.GetExtension(file).ToLower() == ".png" || Path.GetExtension(file).ToLower() == ".jpg" ||
Path.GetExtension(file).ToLower() == ".jpeg" || Path.GetExtension(file).ToLower() == ".bmp" ||
Path.GetExtension(file).ToLower() == ".gif")
{
using (var stream = File.OpenRead(file))
{
if (stream.Length > 0)
{
image = new CustomImage();
image.Name = Path.GetFileName(file);
image.FullPath = Path.GetFullPath(file);
image.Modification = CustomImage.ChangeType.Add;
}
}
byte[] array = GetByteFromImage(file);
image.Img = array;
imgList.Add(image);
}
}
catch (Exception ex)
{
throw new FaultException<ServerException>(new ServerException(
string.Format("An error occured !{0}{1}", Environment.NewLine, ex.Message)));
}
}
if (client != null)
{
client.GetImagesFromServer(imgList);
}
}
#endregion
/// <summary>
/// Convert a file on a byte array.
/// </summary>
/// <param name="file">The file to convert.</param>
/// <returns>An array of byte corresponding to the file.</returns>
private static byte[] GetByteFromImage(string file)
{
byte[] array;
try
{
using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read))
{
BinaryReader reader = new BinaryReader(fs);
array = reader.ReadBytes((int)fs.Length);
reader.Close();
}
}
catch (Exception ex)
{
throw new FaultException<ServerException>(new ServerException(
string.Format("An error occured !{0}{1}", Environment.NewLine, ex.Message)));
}
return array;
}
/// <summary>
/// Method called when the FileSystemWatcher detects that a file has been added/deleted.
/// </summary>
private void GetUpdateFileFromFSW(object sender, System.IO.FileSystemEventArgs e)
{
CustomImage image = null;
if (e.ChangeType == System.IO.WatcherChangeTypes.Created)
{
if (File.Exists(e.FullPath) && (Path.GetExtension(e.FullPath).ToLower() == ".png" ||
Path.GetExtension(e.FullPath).ToLower() == ".jpg"
|| Path.GetExtension(e.FullPath).ToLower() == ".jpeg"
|| Path.GetExtension(e.FullPath).ToLower() == ".bmp"
|| Path.GetExtension(e.FullPath).ToLower() == ".gif"))
{
try
{
using (var stream = File.OpenRead(e.FullPath))
{
if (stream.Length > 0)
{
image = new CustomImage();
image.Name = e.Name;
image.FullPath = e.FullPath;
image.Modification = CustomImage.ChangeType.Add;
}
}
byte[] array = GetByteFromImage(e.FullPath);
image.Img = array;
}
catch (Exception ex)
{
throw new FaultException<ServerException>(new ServerException(
string.Format("An error occured !{0}{1}", Environment.NewLine, ex.Message)));
}
}
}
else if (e.ChangeType == System.IO.WatcherChangeTypes.Deleted)
{
image = new CustomImage();
image.Name = e.Name;
image.FullPath = e.FullPath;
image.Modification = CustomImage.ChangeType.Delete;
}
if (image != null)
{
SendUpdateToClient(image);
}
}
/// <summary>
/// Inforl the client that an update is available.
/// </summary>
/// <param name="image">The image that have been added/deleted.</param>
private void SendUpdateToClient(CustomImage image)
{
if (client != null)
{
client.GetUpdateFromFileShare(image);
}
}
}
[CallbackBehavior(ConcurrencyMode = ConcurrencyMode.Multiple, UseSynchronizationContext = false)]
public class WCFClient : IServerContractCallback
{
#region Member Fields
private ServerContractClient sc = null;
public delegate void GetImagesFromServerHandler(CustomImage[] imgList);
public event GetImagesFromServerHandler GetImagesFromServerEvent;
public delegate void GetUpdateFromFileShareHandler(CustomImage img);
public event GetUpdateFromFileShareHandler GetUpdateFromFileShareEvent;
#endregion
/// <summary>
/// Public constructor.
/// </summary>
public WCFClient()
{
sc = new ServerContractClient(new System.ServiceModel.InstanceContext(this));
sc.Open();
}
/// <summary>
/// Ask the service to launch the FileSystemWatcher on the server.
/// </summary>
/// <param name="path">The folder to watch on the server.</param>
public void StartWatcher(string path)
{
sc.StartWatcher(path);
}
/// <summary>
/// Ask the service to get the images which are in the dedicated folder.
/// </summary>
/// <param name="path">The folder that you want the images.</param>
public void GetImagesFromPathAtFirstLoad(string path)
{
try
{
sc.GetImagesFromPathAtFirstLoad(path);
}
catch (ServerException ex)
{
throw new FaultException<ServerException>(new ServerException(
string.Format("An error occured !{0}{1}", Environment.NewLine, ex.Message)));
}
}
/// <summary>
/// Disconnect the client from the service.
/// </summary>
public void Disconnect()
{
sc.Close();
}
#region IServerContractCallback Members
/// <summary>
/// Method called when the service pushed the images to the client.
/// </summary>
/// <param name="imgList">The list of images to load/get from the server.</param>
public void GetImagesFromServer(CustomImage[] imgList)
{
if (GetImagesFromServerEvent != null)
{
GetImagesFromServerEvent(imgList);
}
}
/// <summary>
/// Method called when the service detext an update in the folder where the image are stored.
/// </summary>
/// <param name="img">The image that has been added/removed from the folder</param>
public void GetUpdateFromFileShare(CustomImage img)
{
if (GetUpdateFromFileShareEvent != null)
{
GetUpdateFromFileShareEvent(img);
}
}
#endregion
}
} |
Quels namespace pour IServerContractCallback et ServerContractClient?
Répondre avec citation
Envoyé par h2s84
. J'ai uniquement fais du copier-coller du site avec des rajouts namespaces de Runtime . 
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