frmclient.cs

Winform_OnlineTraning 我们培训机构的在线培训部分

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.IO;

namespace Example_3
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class frmClient : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button btnConnect;
		private System.Windows.Forms.Label lblMessage;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		//User defined variables
		private TcpClient objTcpClientSocketForServer;
		private NetworkStream objNetworkStream;
		private StreamReader objStreamReader;
		private System.Windows.Forms.TextBox txtText;
		private System.Windows.Forms.Label lbltext;
		private System.Windows.Forms.Button btnExit;
		private StreamWriter objStreamWriter;

		public frmClient()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.btnConnect = new System.Windows.Forms.Button();
			this.lblMessage = new System.Windows.Forms.Label();
			this.txtText = new System.Windows.Forms.TextBox();
			this.lbltext = new System.Windows.Forms.Label();
			this.btnExit = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// btnConnect
			// 
			this.btnConnect.Location = new System.Drawing.Point(96, 86);
			this.btnConnect.Name = "btnConnect";
			this.btnConnect.Size = new System.Drawing.Size(90, 25);
			this.btnConnect.TabIndex = 0;
			this.btnConnect.Text = "连接(&C)";
			this.btnConnect.Click += new System.EventHandler(this.btnConnect_Click);
			// 
			// lblMessage
			// 
			this.lblMessage.Location = new System.Drawing.Point(29, 52);
			this.lblMessage.Name = "lblMessage";
			this.lblMessage.Size = new System.Drawing.Size(259, 26);
			this.lblMessage.TabIndex = 1;
			// 
			// txtText
			// 
			this.txtText.Location = new System.Drawing.Point(96, 9);
			this.txtText.Name = "txtText";
			this.txtText.Size = new System.Drawing.Size(192, 21);
			this.txtText.TabIndex = 2;
			this.txtText.Text = "";
			// 
			// lbltext
			// 
			this.lbltext.Location = new System.Drawing.Point(19, 9);
			this.lbltext.Name = "lbltext";
			this.lbltext.Size = new System.Drawing.Size(67, 24);
			this.lbltext.TabIndex = 3;
			this.lbltext.Text = "消息：";
			// 
			// btnExit
			// 
			this.btnExit.Location = new System.Drawing.Point(202, 86);
			this.btnExit.Name = "btnExit";
			this.btnExit.Size = new System.Drawing.Size(90, 25);
			this.btnExit.TabIndex = 0;
			this.btnExit.Text = "退出(&E)";
			this.btnExit.Click += new System.EventHandler(this.btnExit_Click);
			// 
			// frmClient
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(297, 117);
			this.Controls.Add(this.lbltext);
			this.Controls.Add(this.txtText);
			this.Controls.Add(this.lblMessage);
			this.Controls.Add(this.btnConnect);
			this.Controls.Add(this.btnExit);
			this.MaximizeBox = false;
			this.Name = "frmClient";
			this.Text = "客户端";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new frmClient());
		}

		private void btnConnect_Click(object sender, System.EventArgs e)
		{
			try
			{
				objTcpClientSocketForServer = new TcpClient("localHost", 8221);
			}
			catch
			{
				lblMessage.Text = "未能在 8221 处连接至服务器";
				return;
			}

			objNetworkStream = objTcpClientSocketForServer.GetStream();

			objStreamReader = new StreamReader(objNetworkStream);
        
			objStreamWriter =new StreamWriter(objNetworkStream);
       		try
			{
				string outputString;

				// read the data from the host and display it
    
				outputString = objStreamReader.ReadLine();
				lblMessage.Text= outputString;
				objStreamWriter.WriteLine(this.txtText.Text);
				lblMessage.Text= this.txtText.Text;
				objStreamWriter.Flush();
              
			}
			catch
			{
				Console.WriteLine("从服务器中读取时产生异常");
			}

			// closing the network stream
			objNetworkStream.Close();
   		}

		private void btnExit_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}
	}
}