loginform.cs

机械制造业信息管理系统(含源码) 是为一个粮仪厂开发的

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

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

using System.IO;
using System.Text;
using System.Net;
using System.Diagnostics;

using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary ;

namespace Eboer.MIS.MF.WinForm
{
	/// <summary>
	/// LoginForm 的摘要说明。
	/// </summary>
	public class LoginForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.PictureBox pictureBox1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label4;
		private System.ComponentModel.IContainer components;
		private System.Windows.Forms.Timer timer1;
		private System.Windows.Forms.TextBox password;
		private System.Windows.Forms.TextBox username;

		//
		private DeskConfig dc = null;

		//
		private string connStr = "";

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

			this.connStr = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=" + Application.StartupPath + "\\" + "DB2005.DLL";
			Eboer.MIS.MF.WinForm.Public.connStr = this.connStr;

			Public.NewConn();

			this.LoadConfig();

			//载入粮仪厂图标
			try{
				Image img = Image.FromFile(Application.StartupPath + "\\" + "lylogo.gif");
				Public.lyLogo = img;
			}catch{
				//
			}

			//更新
			this.timer1.Start();


		}

		/// <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 );
		}

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

		#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()
		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(LoginForm));
			this.pictureBox1 = new System.Windows.Forms.PictureBox();
			this.button2 = new System.Windows.Forms.Button();
			this.button1 = new System.Windows.Forms.Button();
			this.password = new System.Windows.Forms.TextBox();
			this.username = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.label1 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.timer1 = new System.Windows.Forms.Timer(this.components);
			this.SuspendLayout();
			// 
			// pictureBox1
			// 
			this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));
			this.pictureBox1.Location = new System.Drawing.Point(0, 0);
			this.pictureBox1.Name = "pictureBox1";
			this.pictureBox1.Size = new System.Drawing.Size(574, 239);
			this.pictureBox1.TabIndex = 0;
			this.pictureBox1.TabStop = false;
			// 
			// button2
			// 
			this.button2.BackColor = System.Drawing.Color.LightSteelBlue;
			this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
			this.button2.Location = new System.Drawing.Point(392, 184);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(80, 23);
			this.button2.TabIndex = 15;
			this.button2.Text = "关 闭";
			this.button2.Click += new System.EventHandler(this.button2_Click_1);
			// 
			// button1
			// 
			this.button1.BackColor = System.Drawing.Color.LightSteelBlue;
			this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
			this.button1.Location = new System.Drawing.Point(312, 184);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(72, 23);
			this.button1.TabIndex = 3;
			this.button1.Text = "登 录";
			this.button1.Click += new System.EventHandler(this.button1_Click_1);
			// 
			// password
			// 
			this.password.Location = new System.Drawing.Point(312, 152);
			this.password.Name = "password";
			this.password.PasswordChar = '*';
			this.password.Size = new System.Drawing.Size(160, 21);
			this.password.TabIndex = 2;
			this.password.Text = "";
			// 
			// username
			// 
			this.username.Location = new System.Drawing.Point(312, 128);
			this.username.Name = "username";
			this.username.Size = new System.Drawing.Size(160, 21);
			this.username.TabIndex = 1;
			this.username.Text = "001";
			// 
			// label2
			// 
			this.label2.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
			this.label2.Location = new System.Drawing.Point(248, 160);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(64, 16);
			this.label2.TabIndex = 9;
			this.label2.Text = "登录密码";
			// 
			// label1
			// 
			this.label1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
			this.label1.Location = new System.Drawing.Point(248, 136);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(56, 16);
			this.label1.TabIndex = 8;
			this.label1.Text = "职员工号";
			// 
			// label4
			// 
			this.label4.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
			this.label4.Location = new System.Drawing.Point(136, 96);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(280, 16);
			this.label4.TabIndex = 16;
			this.label4.Text = "正在检查是否有升级文件，请稍候....";
			// 
			// timer1
			// 
			this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
			// 
			// LoginForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(574, 239);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.password);
			this.Controls.Add(this.username);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.pictureBox1);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.KeyPreview = true;
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "LoginForm";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "用户登录";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 关闭系统
		/// </summary>
		public void ExitApp(){
			if(MessageBox.Show("确定关闭系统吗？","关闭确认",MessageBoxButtons.OKCancel,MessageBoxIcon.Question)  == DialogResult.OK){
				Application.Exit();
			}
		}

		private void button1_Click_1(object sender, System.EventArgs e) {

			if(this.username.Text.Trim() != "" && this.password.Text.Trim() != ""){
				try{
					string sql = "select * from SInfo where username='"+ this.username.Text +"' and pwd='"+ this.password.Text +"'";
					OleDbDataAdapter adp = new OleDbDataAdapter(sql,Public.conn);
					DataSet ds           = new DataSet();
					adp.Fill(ds,"user");
					if(ds.Tables[0].Rows.Count == 1){
						Public.userID = ds.Tables[0].Rows[0]["username"].ToString();
						Public.cuUser = ds.Tables[0].Rows[0]["username"].ToString();
						Public.passCH = ds.Tables[0].Rows[0]["pwd"].ToString();
					}else{
						MessageBox.Show("登录用户名或密码有误！");
						return;
					}
				}catch(Exception ex){
					MessageBox.Show(ex.Message.ToString());
					return;
				}
			}else{
				MessageBox.Show("请输入用户名和密码！");
				return;
			}

			MainForm main = new MainForm(this);
			main.Show();
			this.Visible  = false;	
		}

		private void button2_Click_1(object sender, System.EventArgs e) {
			this.ExitApp();
		}

		/// <summary>
		/// 是否新版本
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void CheckUpdate(){

			String temp = "";

			//寻找服务器地址
			/*
			try{

				WebRequest Wrequest     = WebRequest.Create("http://www.ESST.cn/SoftUpdate/NPMS/ServerColl.asp");
				WebResponse Wresponse   = Wrequest.GetResponse();
				Stream Sm               = Wresponse.GetResponseStream();
				StreamReader Sr         = new StreamReader(Sm,Encoding.GetEncoding("GB2312"));
				temp                    = Sr.ReadToEnd().ToString();
				Sr.Close();

				if(temp != null && temp != "" && temp.IndexOf("ESST_NPMS_SERVER") > 0){
					temp = temp.Replace("[ESST_NPMS_SERVER]","");
					string[] temp_ = temp.Split(',');
					string connStr_ = this.connStr.Replace("tzrbs-npms.vicp.net",temp_[0].ToString());
					this.dba = DBAction.Instance(Config.connStr);
					Config.connStr = connStr_;
					this.connStr   = Config.connStr;
				}

			}catch(Exception ex){
				//MessageBox.Show("寻找替换服务器地址时出错：" + ex.Message.ToString());
			}

			try{
				this.dba = DBAction.Instance(Config.connStr);
				this.LoadCompany();
			}catch{
				MessageBox.Show("不能连接数据库服务器，请确认：\n1）数据库服务器是否打开；\n2）当前计算机是否连入Internet网。");
				Application.Exit();
			}
			
			*/

			try{
				WebRequest Wrequest     = WebRequest.Create("http://www.ESST.cn/SoftUpdate/TZLYIMS/softUpdate.htm");
				WebResponse Wresponse   = Wrequest.GetResponse();
				Stream Sm               = Wresponse.GetResponseStream();
				StreamReader Sr         = new StreamReader(Sm,Encoding.GetEncoding("GB2312"));
				temp                    = Sr.ReadToEnd().ToString();
				Sr.Close();
			}catch{
				this.label4.Visible = false;
				this.label4.Text    = "检查升级完毕！";
				return;
			}

			int    oneI    = temp.IndexOf("]");
			string softVer = temp.Substring(1,oneI-1).ToString();

			try{
				if(this.dc.softVer.IndexOf(softVer) != 0 && MessageBox.Show("系统检查到有升级文件可供更新，确定升级吗？","升级确认",MessageBoxButtons.OKCancel,MessageBoxIcon.Question) == DialogResult.OK){
						
						dc.softVer      = softVer;

						string defaultDirectory = Application.StartupPath;
						string fileName         = defaultDirectory + "\\default.co";
						Stream s = File.Open(fileName,FileMode.Create);
						BinaryFormatter b =new BinaryFormatter();
						b.Serialize(s,this.dc);
						s.Close();
					

						//打开升级窗口下载最新文件
						System.Diagnostics.Process p = new Process();
						p.StartInfo.FileName = Application.StartupPath + "\\UpdateEr.exe";
						p.Start();

						Application.Exit();
				}else{
					this.label4.Visible = false;
				}
			}catch(Exception ex){
				MessageBox.Show("开始升级时出错：" + ex.Message.ToString());
			}
		}

		//载入配置文件
		private void LoadConfig(){
			try{
				string defaultDirectory = Application.StartupPath;
				string fileName         = defaultDirectory + "\\default.co";
				if(File.Exists(fileName)){ //如果存在，打开文件

					Stream s = File.Open(fileName,FileMode.Open);
					BinaryFormatter b = new BinaryFormatter();
					this.dc           =(DeskConfig)b.Deserialize(s);
					s.Close();

				}else{

					DeskConfig dc  = new DeskConfig();
					dc.softVer     = "1.00";

					defaultDirectory = Application.StartupPath;
					fileName         = defaultDirectory + "\\default.co";
					Stream s = File.Open(fileName,FileMode.Create);
					BinaryFormatter b =new BinaryFormatter();
					b.Serialize(s,dc);
					s.Close();

				}
			}catch{
				MessageBox.Show("系统配置文件错误，不能从硬盘读取请联系系统管理员！");
			}
		}

		/// <summary>
		/// 检查更新
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void timer1_Tick(object sender, System.EventArgs e) {
			this.timer1.Stop();
			this.CheckUpdate();			
		}
	}
}