create begin-exam

eManagerSystem/eManagerSystem/FormServer/Form1.cs

@@ -9,19 +9,40 @@
 using System.Threading.Tasks;
 using System.Windows.Forms;
 using eManagerSystem.Application.Catalog.Server;
+using eManagerSystem.Application.Catalog.Begin;
 namespace FormServer
 {
     public partial class Form1 : Form
     {
        // ServerService server = new ServerService();
         IServerService _server;
+
+
+        int counter = 0;
+        System.Timers.Timer countdown;
+
         public Form1(IServerService server)
         {
+
+
             _server = server;
             InitializeComponent();
             CheckForIllegalCrossThreadCalls = false;
-
-
+            countdown = new System.Timers.Timer();
+            countdown.Elapsed += Countdown_Elapsed;
+
+        }
+
+        private void Countdown_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
+        {
+            counter -= 1;
+            int minute = counter / 60;
+            int second = counter % 60;
+            lblTimeLeft.Text = minute + " : " + second;
+            if (counter == 0)
+            {
+                countdown.Stop();
+            }
         }
 
         private void Form1_Load(object sender, EventArgs e)
@@ -31,8 +52,7 @@ private void Form1_Load(object sender, EventArgs e)
 
         private void cmdBatDauLamBai_Click(object sender, EventArgs e)
         {
-
-
+            counter = _server.BeginExam(txtThoiGianLamBai.Text,this.counter,countdown);
         }
         private OpenFileDialog openFileDialog1;
         // them de thi
@@ -42,19 +62,19 @@ private void button3_Click(object sender, EventArgs e)
             if (openFileDialog1.ShowDialog() == DialogResult.OK)
             {
                 try
-                {
-
+                { 
                     var PathName = openFileDialog1.FileName;
                     _server.Send(PathName);
-
-
                 }
                 catch
                 {
-                    MessageBox.Show("Loi mo file");
-
+                    MessageBox.Show("Loi mo file"); 
                 }
             }
         }
+        private void cmdChapNhan_Click(object sender, EventArgs e)
+        {
+            cmdBatDauLamBai.Visible = true;
+        }
     }
 }

eManagerSystem/eManagerSystem/eManagerSystem.Application/Catalog/Server/IServerService.cs

@@ -1,14 +1,18 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net.Sockets;
+using System.Net;
 using System.Text;
 using System.Threading.Tasks;
 
 namespace eManagerSystem.Application.Catalog.Server
 {
    public interface IServerService
     {
-         void Connect();
+
+
+        void Connect();
          void Send(string filePath);
 
         void Receive(object obj);
@@ -18,7 +22,9 @@ public interface IServerService
         byte[] GetFilePath(string filePath);
 
         object Deserialize(byte[] data);
+        byte[] Serialize(object data);
+        object Data { get; set; }
 
-
+        int BeginExam(string inputTime, int counter, System.Timers.Timer countdown);
     }
 }

eManagerSystem/eManagerSystem/eManagerSystem.Application/Catalog/Server/ServerService.cs

@@ -16,7 +16,8 @@ public class ServerService : IServerService
         IPEndPoint IP;
         Socket server;
         List<Socket> clientList;
-
+        public object Data { get; set; }
+
         public void Connect()
         {
             clientList = new List<Socket>();
@@ -103,13 +104,46 @@ public byte[] GetFilePath(string filePath)
             return serverData;
         }
 
+        public byte[] Serialize(object data)
+        {
+            MemoryStream stream = new MemoryStream();
+            BinaryFormatter formatter = new BinaryFormatter();
+            formatter.Serialize(stream, data);
+            return stream.ToArray();
+        }
         public object Deserialize(byte[] data)
         {
             MemoryStream stream = new MemoryStream(data);
             BinaryFormatter formatter = new BinaryFormatter();
             formatter.Deserialize(stream);
             return stream;
         }
-
+        public int BeginExam(string inputTime, int counter, System.Timers.Timer countdown)
+        {
+
+
+            int minute = Convert.ToInt32(inputTime);
+            counter = minute * 60;
+            countdown.Enabled = true;
+
+            this.Data = minute;
+            Byte[] buffer = Serialize(this.Data);
+
+            foreach (Socket client in clientList)
+            {
+                try
+                {
+                    client.Send(buffer);
+                }
+                catch (Exception ex)
+                {
+                    clientList.Remove(client);
+                    client.Close();
+                }
+            }
+            return counter;
+        }
+
+
     }
 }

eManagerSystem/eManagerSystem/eManagerSystem.Application/eManagerSystem.Application.csproj

@@ -41,6 +41,8 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Catalog\Begin\BeginExamService.cs" />
+    <Compile Include="Catalog\Begin\IBeginExamServie.cs" />
     <Compile Include="Catalog\Examination\ExaminationService.cs" />
     <Compile Include="Catalog\Examination\IExaminationService.cs" />
     <Compile Include="Catalog\Message\IMessageService.cs" />