login.cs

一个网络版的考试系统

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

using System.Data;
using System.Data.OleDb;

namespace ExamSystem
{
	/// <summary>
	/// Login 的摘要说明。
	/// </summary>
	public class Login : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.TextBox userName;
		private System.Windows.Forms.TextBox password;
		private System.Windows.Forms.Label le;
		private System.ComponentModel.IContainer components;

		private OleDbConnection conn;
		public  string softType = "CLIENT";

		public Login()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			Config.connStr = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=" + Application.StartupPath + @"\ExamItem.EDB";
			conn = new OleDbConnection(Config.connStr);
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Login));
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.password = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.userName = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.le = new System.Windows.Forms.Label();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.password);
			this.groupBox1.Controls.Add(this.label3);
			this.groupBox1.Controls.Add(this.userName);
			this.groupBox1.Controls.Add(this.label2);
			this.groupBox1.Location = new System.Drawing.Point(8, 8);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(328, 48);
			this.groupBox1.TabIndex = 1;
			this.groupBox1.TabStop = false;
			// 
			// password
			// 
			this.password.Location = new System.Drawing.Point(72, 16);
			this.password.Name = "password";
			this.password.PasswordChar = '*';
			this.password.Size = new System.Drawing.Size(232, 21);
			this.password.TabIndex = 3;
			this.password.Text = "";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(16, 24);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(56, 16);
			this.label3.TabIndex = 2;
			this.label3.Text = "登录口令";
			// 
			// userName
			// 
			this.userName.Location = new System.Drawing.Point(72, 16);
			this.userName.Name = "userName";
			this.userName.Size = new System.Drawing.Size(232, 21);
			this.userName.TabIndex = 1;
			this.userName.Text = "119";
			this.userName.Visible = false;
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(16, 24);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(56, 16);
			this.label2.TabIndex = 0;
			this.label2.Text = "登录标识";
			this.label2.Visible = false;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(280, 64);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(56, 23);
			this.button1.TabIndex = 2;
			this.button1.Text = "退出";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(224, 64);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(56, 23);
			this.button2.TabIndex = 3;
			this.button2.Text = "登录";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// le
			// 
			this.le.Location = new System.Drawing.Point(16, 104);
			this.le.Name = "le";
			this.le.Size = new System.Drawing.Size(320, 32);
			this.le.TabIndex = 4;
			this.le.Text = "运行本系统，显示器分辨率需调到 1024 X 768 ，否则系统界面会显示不完！";
			// 
			// Login
			// 
			this.AcceptButton = this.button2;
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.BackColor = System.Drawing.SystemColors.Control;
			this.ClientSize = new System.Drawing.Size(344, 149);
			this.Controls.Add(this.le);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.groupBox1);
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "Login";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "某单位考试系统";
			this.Load += new System.EventHandler(this.Login_Load);
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 由此开始运行程序
		/// </summary>
		[STAThread]
		static void Main() {
			//Application.Run(new Login());
			Application.Run(new MainForm("CLIENT"));
		}

		/// <summary>
		/// 退出程序
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void button1_Click(object sender, System.EventArgs e) {
			Application.Exit();
		}

		private void button2_Click(object sender, System.EventArgs e) {
			string sql = "select * from Admin where userName='"+ this.userName.Text +"' and Password='"+ this.password.Text +"'";
			this.conn.Open();
			OleDbDataAdapter odp = new OleDbDataAdapter(sql,conn);
			DataSet ds = new DataSet();
			odp.Fill(ds);
			this.conn.Close();
			if(ds.Tables[0].Rows.Count >0 ){
				MainForm mf  = new MainForm("SERVER");
				mf.Show();
				this.Visible = false;
			}else{
				MessageBox.Show("标识或密码不正确!");
			}
		}

		private void Login_Load(object sender, System.EventArgs e) {
			System.Drawing.Size mSize = SystemInformation.WorkingArea.Size;
			int i=mSize.Height;
			int j=mSize.Width;
			if(i < 680 || j < 950 || i > 800 || j >1100){
				MessageBox.Show("运行软件需要 1024 X 768 的分辨率，请调整后再运行本系统，谢谢合作！");
			}
		}
	}
}