frmuser.cs

本论文叙述了联机考试系统的现状以及C#语言的概况。重点介绍了联机考试系统的实现过程：包括系统分析、 系统调查、 数据流程分析、功能设计、 数据库设计、 系统物理配置方案、 系统实现、 系统测试和调试。

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

namespace OES
{
	/// <summary>
	/// Summary description for frmUser.
	/// </summary>
	public class frmUser : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button btnSave;
		private System.Windows.Forms.Label lblUsername;
		private System.Windows.Forms.TextBox txtUsername;
		private System.Windows.Forms.Label lblPassword;
		private System.Windows.Forms.TextBox txtPassword;
		private System.Windows.Forms.Label lblConfirmPwd;
		private System.Windows.Forms.TextBox txtConfirmPwd;
		private System.Windows.Forms.Label lblCreateUser;
		private System.Windows.Forms.GroupBox grpPersonalDetails;
		private System.Windows.Forms.GroupBox grpStatus;
		private System.Windows.Forms.RadioButton radInactive;
		private System.Windows.Forms.RadioButton radActive;
		private System.Windows.Forms.GroupBox grpGender;
		private System.Windows.Forms.RadioButton radFemale;
		private System.Windows.Forms.RadioButton radMale;
		private System.Windows.Forms.TextBox txtEmail;
		private System.Windows.Forms.Label lblEmail;
		private System.Windows.Forms.TextBox txtPhone;
		private System.Windows.Forms.Label lblPhone;
		public System.Windows.Forms.ComboBox cboUserType;
		private System.Windows.Forms.Label lblUserType;
		private System.Windows.Forms.Button btnHelp;
		private System.Windows.Forms.TextBox txtAddress;
		private System.Windows.Forms.Label lblAddress;
		private System.Windows.Forms.Label lblName;
		private System.Windows.Forms.TextBox txtName;

		//error message variable for validation

		private string errorMsg;
		//variable for validation
		private bool allValidated=true;
		private static int count=0;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
        
        public static DataTable dtUpdate;		
        private static int index=0;		
	
		private int localflag=0;
		private frmUserSearch objUserSearch;
		//private static DataTable dtUser;

		private DataTable dtUserTable;
		
		private bool status, gender;
		private System.Windows.Forms.ErrorProvider errUser;
		private System.Windows.Forms.Button btnCancel;
		//记录要修改的行
        private DataRow drBefore;        
		//记录最初表的数据
		private DataTable dtIniTable;

		//数据即将被修改的表
		private DataTable tdModifTable;

		//定义要修改数据的行号
		int intModifRowNumber;

		
		public frmUser(int flag,object user)
		{
			
			//CreateTable();
			localflag = flag;
		    
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

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

		/// <summary>
		/// 获取要修改的整个表，然后根据要修改的行号，显示要修改的相应数据
		/// </summary>
		/// <param name="flag" >标识</param>
		/// <param name="user" >用户</param>
		/// <param name="intModifRow" >要修改的行号</param>
		/// <param name="tbModyTable" >用户列表</param>
		public frmUser(int flag,object user,int intModifRow,DataTable tbModyTable)
		{
			localflag = flag;

			//记录要修改的行号
			this.intModifRowNumber =intModifRow;			
			//记录修改之前的行的数据
			drBefore=tbModyTable.NewRow ();
			drBefore[1]="a";
			this.CopyRow (tbModyTable.Rows[intModifRow],drBefore);
			
			//记录要修改的表
			this.dtIniTable =tbModyTable;

			//数据即将被修改的表
			tdModifTable=tbModyTable;
			
			// 初始化窗体
			InitializeComponent();
			if(localflag == 3)//确定用户的管理员身份
			{
				this.btnSave.Enabled=true;
				this.objUserSearch = (frmUserSearch)user;
				this.lblCreateUser.Font = new System.Drawing.Font("Century Gothic", 21.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
				this.lblCreateUser.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
				this.lblCreateUser.Location = new System.Drawing.Point(144, 8);
				lblCreateUser.Text="修  改  用  户";
				this.btnSave.Text = "确认(&O)";
				this.lblConfirmPwd .Visible  =false;
				this.txtConfirmPwd.Visible =false; 
				this.txtUsername.ReadOnly = true; 
				//以下显示将要修改行的数据显示到相应的输入框
				this.txtUsername.Text = tdModifTable.Rows[intModifRow][0].ToString();
				
				this.txtName.Text = tdModifTable.Rows[intModifRow][1].ToString ();
				this.txtPassword.Text = tdModifTable.Rows[intModifRow][2].ToString ();
				
				if (Convert.ToBoolean(tdModifTable.Rows[intModifRow][3]))
				{
					this.radActive.Checked=true ;
				}
				else 
				{
					this.radInactive.Checked = true;
				}
                
				this.cboUserType.Text = tdModifTable.Rows[intModifRow][4].ToString() ;			
				
				if (Convert.ToBoolean (tdModifTable.Rows[intModifRow][5]))
				{
					this.radMale.Checked =  true;  
				}
				
				else
				{
					this.radFemale.Checked =  true;  
				}
				this.txtAddress.Text = tdModifTable.Rows[intModifRow][6].ToString();
				this.txtEmail.Text = tdModifTable.Rows[intModifRow][7].ToString();
				this.txtPhone.Text = tdModifTable.Rows[intModifRow][8].ToString();

			}
			else
			{
				MessageBox.Show ("您不是管理员，没有修改用户的权力！");
			}

		}


		//拷贝第一行的数据到第二行
		private DataRow CopyRow(DataRow drBef,DataRow drAft)
		{
			for(int colIndex=0;colIndex<drBef.ItemArray .Length ;colIndex++)
			{
				
				drAft[colIndex]=drBef[colIndex];
			}
			return drAft;
		}

		/// <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()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(frmUser));
			this.lblUsername = new System.Windows.Forms.Label();
			this.txtUsername = new System.Windows.Forms.TextBox();
			this.lblPassword = new System.Windows.Forms.Label();
			this.txtPassword = new System.Windows.Forms.TextBox();
			this.lblConfirmPwd = new System.Windows.Forms.Label();
			this.txtConfirmPwd = new System.Windows.Forms.TextBox();
			this.lblCreateUser = new System.Windows.Forms.Label();
			this.btnSave = new System.Windows.Forms.Button();
			this.btnCancel = new System.Windows.Forms.Button();
			this.grpPersonalDetails = new System.Windows.Forms.GroupBox();
			this.grpStatus = new System.Windows.Forms.GroupBox();
			this.radInactive = new System.Windows.Forms.RadioButton();
			this.radActive = new System.Windows.Forms.RadioButton();
			this.grpGender = new System.Windows.Forms.GroupBox();
			this.radFemale = new System.Windows.Forms.RadioButton();
			this.radMale = new System.Windows.Forms.RadioButton();
			this.txtEmail = new System.Windows.Forms.TextBox();
			this.lblEmail = new System.Windows.Forms.Label();
			this.txtPhone = new System.Windows.Forms.TextBox();
			this.lblPhone = new System.Windows.Forms.Label();
			this.txtAddress = new System.Windows.Forms.TextBox();
			this.lblAddress = new System.Windows.Forms.Label();
			this.txtName = new System.Windows.Forms.TextBox();
			this.lblName = new System.Windows.Forms.Label();
			this.cboUserType = new System.Windows.Forms.ComboBox();
			this.lblUserType = new System.Windows.Forms.Label();
			this.btnHelp = new System.Windows.Forms.Button();
			this.errUser = new System.Windows.Forms.ErrorProvider();
			this.grpPersonalDetails.SuspendLayout();
			this.grpStatus.SuspendLayout();
			this.grpGender.SuspendLayout();
			this.SuspendLayout();
			// 
			// lblUsername
			// 
			this.lblUsername.AutoSize = true;
			this.lblUsername.BackColor = System.Drawing.Color.Transparent;
			this.lblUsername.Font = new System.Drawing.Font("Century Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.lblUsername.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.lblUsername.Location = new System.Drawing.Point(173, 112);
			this.lblUsername.Name = "lblUsername";
			this.lblUsername.Size = new System.Drawing.Size(45, 18);
			this.lblUsername.TabIndex = 0;
			this.lblUsername.Text = "用户名";
			// 
			// txtUsername
			// 
			this.txtUsername.BackColor = System.Drawing.SystemColors.Info;
			this.txtUsername.Font = new System.Drawing.Font("Times New Roman", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.txtUsername.Location = new System.Drawing.Point(269, 112);
			this.txtUsername.Name = "txtUsername";
			this.txtUsername.Size = new System.Drawing.Size(163, 20);
			this.txtUsername.TabIndex = 1;
			this.txtUsername.Text = "";
			this.txtUsername.Leave += new System.EventHandler(this.txtUsername_Leave);
			// 
			// lblPassword
			// 
			this.lblPassword.AutoSize = true;
			this.lblPassword.BackColor = System.Drawing.Color.Transparent;
			this.lblPassword.Font = new System.Drawing.Font("Century Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.lblPassword.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.lblPassword.Location = new System.Drawing.Point(451, 112);
			this.lblPassword.Name = "lblPassword";
			this.lblPassword.Size = new System.Drawing.Size(32, 18);
			this.lblPassword.TabIndex = 2;
			this.lblPassword.Text = "密码";
			// 
			// txtPassword
			// 
			this.txtPassword.BackColor = System.Drawing.SystemColors.Info;
			this.txtPassword.Location = new System.Drawing.Point(595, 112);
			this.txtPassword.Name = "txtPassword";
			this.txtPassword.PasswordChar = '*';
			this.txtPassword.Size = new System.Drawing.Size(163, 21);
			this.txtPassword.TabIndex = 3;
			this.txtPassword.Text = "";
			this.txtPassword.Leave += new System.EventHandler(this.txtPassword_Leave);
			// 
			// lblConfirmPwd
			// 
			this.lblConfirmPwd.AutoSize = true;
			this.lblConfirmPwd.BackColor = System.Drawing.Color.Transparent;
			this.lblConfirmPwd.Font = new System.Drawing.Font("Century Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.lblConfirmPwd.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.lblConfirmPwd.Location = new System.Drawing.Point(451, 146);
			this.lblConfirmPwd.Name = "lblConfirmPwd";
			this.lblConfirmPwd.Size = new System.Drawing.Size(59, 18);
			this.lblConfirmPwd.TabIndex = 4;
			this.lblConfirmPwd.Text = "确认密码";
			// 
			// txtConfirmPwd