frmload.cs

一个好的系统 对初学者很有用啊 来看看啊

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using ExamCenter.BLCTier;
using System.Configuration;
namespace ExamCenter.FormTier
{
	/// <summary>
	/// FrmLoad 的摘要说明。
	/// </summary>
	public class FrmLoad : System.Windows.Forms.Form
	{
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		//
		//以下四个变量是我自己定义的，其中前三个是静态变量，用来返回登陆窗体的结果
		//PassedOrNot返回是否通过验证 ,FirstTimeLoad表示是否是第一次调用这个对话框，UserId返回登陆用户的账号
		//ErrorTimes表示验证密码时，错误的次数
		//
		private static int intUserId=0 ;
		
		private static bool blnPassedOrNot=false;
		public  static bool blnFirstTimeLoad=true;
		private int intErrorTimes=0;
		private System.Windows.Forms.Button btnOk;
		private System.Windows.Forms.Button btnCancel;
		private System.Windows.Forms.Label lblEmpId;
		private System.Windows.Forms.Label lblPassword;
		private System.Windows.Forms.TextBox txtPassword;
		private System.Windows.Forms.TextBox txtUserEName;
		private System.Windows.Forms.Label lblTitle;
		private System.Windows.Forms.Label lblExit;
		private System.Windows.Forms.PictureBox pictureBox1;
		
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public static bool BlnPassedOrNot
		{
			get{ return blnPassedOrNot;}
			set{ blnPassedOrNot=value;}
		}
		public static int IntUserID
		{
			get {return intUserId;}
			set {intUserId=value;}
		}		
		

		public FrmLoad()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();
			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <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 Form Designer generated code
		/// <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(FrmLoad));
			this.btnOk = new System.Windows.Forms.Button();
			this.btnCancel = new System.Windows.Forms.Button();
			this.txtPassword = new System.Windows.Forms.TextBox();
			this.lblEmpId = new System.Windows.Forms.Label();
			this.lblPassword = new System.Windows.Forms.Label();
			this.txtUserEName = new System.Windows.Forms.TextBox();
			this.lblTitle = new System.Windows.Forms.Label();
			this.lblExit = new System.Windows.Forms.Label();
			this.pictureBox1 = new System.Windows.Forms.PictureBox();
			this.SuspendLayout();
			// 
			// btnOk
			// 
			this.btnOk.BackColor = System.Drawing.Color.Transparent;
			this.btnOk.Location = new System.Drawing.Point(104, 130);
			this.btnOk.Name = "btnOk";
			this.btnOk.Size = new System.Drawing.Size(64, 23);
			this.btnOk.TabIndex = 2;
			this.btnOk.Text = "确定";
			this.btnOk.Click += new System.EventHandler(this.btnOk_Click);
			// 
			// btnCancel
			// 
			this.btnCancel.BackColor = System.Drawing.Color.Transparent;
			this.btnCancel.Location = new System.Drawing.Point(216, 130);
			this.btnCancel.Name = "btnCancel";
			this.btnCancel.Size = new System.Drawing.Size(64, 23);
			this.btnCancel.TabIndex = 3;
			this.btnCancel.Text = "取消";
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			// 
			// txtPassword
			// 
			this.txtPassword.Location = new System.Drawing.Point(160, 88);
			this.txtPassword.MaxLength = 10;
			this.txtPassword.Name = "txtPassword";
			this.txtPassword.PasswordChar = '*';
			this.txtPassword.Size = new System.Drawing.Size(136, 21);
			this.txtPassword.TabIndex = 1;
			this.txtPassword.Text = "";
			// 
			// lblEmpId
			// 
			this.lblEmpId.BackColor = System.Drawing.Color.Transparent;
			this.lblEmpId.Location = new System.Drawing.Point(80, 48);
			this.lblEmpId.Name = "lblEmpId";
			this.lblEmpId.Size = new System.Drawing.Size(72, 16);
			this.lblEmpId.TabIndex = 4;
			this.lblEmpId.Text = "登录名称：";
			// 
			// lblPassword
			// 
			this.lblPassword.BackColor = System.Drawing.Color.Transparent;
			this.lblPassword.Location = new System.Drawing.Point(96, 88);
			this.lblPassword.Name = "lblPassword";
			this.lblPassword.Size = new System.Drawing.Size(48, 16);
			this.lblPassword.TabIndex = 5;
			this.lblPassword.Text = "密码：";
			// 
			// txtUserEName
			// 
			this.txtUserEName.Location = new System.Drawing.Point(160, 48);
			this.txtUserEName.MaxLength = 10;
			this.txtUserEName.Multiline = true;
			this.txtUserEName.Name = "txtUserEName";
			this.txtUserEName.Size = new System.Drawing.Size(136, 21);
			this.txtUserEName.TabIndex = 0;
			this.txtUserEName.Text = "";
			// 
			// lblTitle
			// 
			this.lblTitle.BackColor = System.Drawing.Color.Transparent;
			this.lblTitle.ForeColor = System.Drawing.SystemColors.ControlLightLight;
			this.lblTitle.Location = new System.Drawing.Point(120, 6);
			this.lblTitle.Name = "lblTitle";
			this.lblTitle.Size = new System.Drawing.Size(100, 16);
			this.lblTitle.TabIndex = 6;
			this.lblTitle.Text = " 用 户 登 录";
			// 
			// lblExit
			// 
			this.lblExit.BackColor = System.Drawing.Color.Transparent;
			this.lblExit.Location = new System.Drawing.Point(304, 0);
			this.lblExit.Name = "lblExit";
			this.lblExit.Size = new System.Drawing.Size(16, 16);
			this.lblExit.TabIndex = 7;
			this.lblExit.Click += new System.EventHandler(this.lblExit_Click);
			// 
			// pictureBox1
			// 
			this.pictureBox1.BackColor = System.Drawing.Color.Transparent;
			this.pictureBox1.Image = ((System.Drawing.Bitmap)(resources.GetObject("pictureBox1.Image")));
			this.pictureBox1.Location = new System.Drawing.Point(22, 41);
			this.pictureBox1.Name = "pictureBox1";
			this.pictureBox1.Size = new System.Drawing.Size(50, 48);
			this.pictureBox1.TabIndex = 8;
			this.pictureBox1.TabStop = false;
			// 
			// FrmLoad
			// 
			this.AcceptButton = this.btnOk;
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.BackgroundImage = ((System.Drawing.Bitmap)(resources.GetObject("$this.BackgroundImage")));
			this.ClientSize = new System.Drawing.Size(324, 177);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.pictureBox1,
																		  this.lblExit,
																		  this.lblTitle,
																		  this.lblPassword,
																		  this.lblEmpId,
																		  this.txtPassword,
																		  this.txtUserEName,
																		  this.btnCancel,
																		  this.btnOk});
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "FrmLoad";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "登陆界面";
			this.Load += new System.EventHandler(this.FrmLoad_Load);
			this.ResumeLayout(false);

		}
		#endregion

		
		private void btnOk_Click(object sender, System.EventArgs e)
		{
            //if(Rockey.FindRockey()!=true)
            //{
            //    MessageBox.Show("您未获得授权使用本系统、请与程序供应商联系");        
            //    this.Close();
            //    return;
            //}
			
			UserBLC myUserBLC=new UserBLC ();
			if(myUserBLC.VerifyPassword (this.txtUserEName .Text .Trim (),this.txtPassword .Text.Trim () )==true)
			{
				FrmLoad.BlnPassedOrNot=true;
				FrmLoad.blnFirstTimeLoad =false;//从此以后的登陆就不再是第一次登陆				
				this.Close ();			
			}
			else
			{
				MessageBox.Show ("密码错误！","错误");
				this.intErrorTimes ++;
				if(this.intErrorTimes ==3)
				{
					MessageBox.Show ("三次密码错误，系统将结束！","警告");
					Application.Exit ();
				}
			}		
		}

		private void btnCancel_Click(object sender, System.EventArgs e)
		{
			if (FrmLoad.blnFirstTimeLoad ==true)//该窗体是第一次使用还是重新登陆？
			{
				Application .Exit ();
			}
			else
			{
				this.Close ();
			}
		}

		private void lblExit_Click(object sender, System.EventArgs e)
		{
			if (FrmLoad.blnFirstTimeLoad ==true)//该窗体是第一次使用还是重新登陆？
			{
				//Application .Exit ();
				this.Close();
			}
			else
			{
				this.Close ();
			}
		}

		private void FrmLoad_Load(object sender, System.EventArgs e)
		{
			loadConnectStr();
		}	
		private void loadConnectStr()
		{
            //string serverip=Encryption.Decrypt(ConfigurationSettings.AppSettings["serverip"],"11111111");
            //string databasename=Encryption.Decrypt(ConfigurationSettings.AppSettings["databasename"],"11111111");
            //string uid=Encryption.Decrypt(ConfigurationSettings.AppSettings["uid"],"11111111");
            //string pwd=Encryption.Decrypt(ConfigurationSettings.AppSettings["pwd"],"11111111");
            //ADLCTier.BaseADLC.strConn="Data source="+serverip+";"+"initial catalog="+databasename+";"+"user id="+uid+";"+"password="+pwd+";";						
            ADLCTier.BaseADLC.strConn = "Data source=HXZK;" + "initial catalog=examcenter;" + "user id=sa;" + "password=sa;";						
		}
		
	}
}