mainform.cs

一个简单的学籍管理系统！！！！！！！！！！！！！！！！

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

namespace WindowsApplication1
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
		
	public class MainForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MainMenu mainMenu1;
		public System.Windows.Forms.MenuItem menuItem1;
		public System.Windows.Forms.MenuItem menuItem2;
		public System.Windows.Forms.MenuItem menuItem3;
		public System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem menuItem6;
		private System.Windows.Forms.MenuItem menuItem8;
		private System.Windows.Forms.MenuItem menuItem9;
		public System.Windows.Forms.MenuItem menuItem10;
		private System.Windows.Forms.MenuItem menuItem11;
		private System.Windows.Forms.MenuItem menuItem12;
		private System.Windows.Forms.MenuItem menuItem13;
		private System.Windows.Forms.MenuItem menuItem14;
		private System.Windows.Forms.MenuItem menuItem15;
		public System.Windows.Forms.MenuItem menuItem16;
		public System.Windows.Forms.MenuItem menuItem17;
		private System.Windows.Forms.MenuItem menuItem7;
		private System.Windows.Forms.StatusBar statusBar1;
		private System.Windows.Forms.MenuItem menuItem20;
		private System.Windows.Forms.MenuItem menuItem21;
		private System.Windows.Forms.MenuItem menuItem23;
        private System.Windows.Forms.MenuItem menuItem24;
        private IContainer components;
		private System.Windows.Forms.StatusBarPanel statusBarPanel1;
		public System.Windows.Forms.StatusBarPanel statusBarPanel2;
		private System.Windows.Forms.StatusBarPanel statusBarPanel3;
		private System.Windows.Forms.MenuItem menuItem22;
		private System.Windows.Forms.MenuItem menuItem19;
		private System.Windows.Forms.MenuItem menuItem25;
		private System.Windows.Forms.MenuItem menuItem26;
		private System.Windows.Forms.MenuItem menuItem27;
		private System.Windows.Forms.StatusBarPanel statusBarPanel4;
		private System.Windows.Forms.StatusBarPanel statusBarPanel5;
        private Timer timer1;
        public static MainForm mainfrm=null;   

		public MainForm()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();
            mainfrm=this;
			//
			// 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 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.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
            this.mainMenu1 = new System.Windows.Forms.MainMenu(this.components);
            this.menuItem16 = new System.Windows.Forms.MenuItem();
            this.menuItem17 = new System.Windows.Forms.MenuItem();
            this.menuItem22 = new System.Windows.Forms.MenuItem();
            this.menuItem10 = new System.Windows.Forms.MenuItem();
            this.menuItem11 = new System.Windows.Forms.MenuItem();
            this.menuItem12 = new System.Windows.Forms.MenuItem();
            this.menuItem1 = new System.Windows.Forms.MenuItem();
            this.menuItem5 = new System.Windows.Forms.MenuItem();
            this.menuItem6 = new System.Windows.Forms.MenuItem();
            this.menuItem2 = new System.Windows.Forms.MenuItem();
            this.menuItem8 = new System.Windows.Forms.MenuItem();
            this.menuItem13 = new System.Windows.Forms.MenuItem();
            this.menuItem3 = new System.Windows.Forms.MenuItem();
            this.menuItem9 = new System.Windows.Forms.MenuItem();
            this.menuItem14 = new System.Windows.Forms.MenuItem();
            this.menuItem4 = new System.Windows.Forms.MenuItem();
            this.menuItem15 = new System.Windows.Forms.MenuItem();
            this.menuItem7 = new System.Windows.Forms.MenuItem();
            this.menuItem20 = new System.Windows.Forms.MenuItem();
            this.menuItem24 = new System.Windows.Forms.MenuItem();
            this.menuItem19 = new System.Windows.Forms.MenuItem();
            this.menuItem25 = new System.Windows.Forms.MenuItem();
            this.menuItem27 = new System.Windows.Forms.MenuItem();
            this.menuItem26 = new System.Windows.Forms.MenuItem();
            this.menuItem21 = new System.Windows.Forms.MenuItem();
            this.menuItem23 = new System.Windows.Forms.MenuItem();
            this.statusBar1 = new System.Windows.Forms.StatusBar();
            this.statusBarPanel1 = new System.Windows.Forms.StatusBarPanel();
            this.statusBarPanel2 = new System.Windows.Forms.StatusBarPanel();
            this.statusBarPanel3 = new System.Windows.Forms.StatusBarPanel();
            this.statusBarPanel4 = new System.Windows.Forms.StatusBarPanel();
            this.statusBarPanel5 = new System.Windows.Forms.StatusBarPanel();
            this.timer1 = new System.Windows.Forms.Timer(this.components);
            ((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.statusBarPanel2)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.statusBarPanel3)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.statusBarPanel4)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.statusBarPanel5)).BeginInit();
            this.SuspendLayout();
            // 
            // mainMenu1
            // 
            this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem16,
            this.menuItem10,
            this.menuItem1,
            this.menuItem2,
            this.menuItem3,
            this.menuItem4,
            this.menuItem19,
            this.menuItem21});
            // 
            // menuItem16
            // 
            this.menuItem16.Index = 0;
            this.menuItem16.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem17,
            this.menuItem22});
            resources.ApplyResources(this.menuItem16, "menuItem16");
            // 
            // menuItem17
            // 
            this.menuItem17.Index = 0;
            resources.ApplyResources(this.menuItem17, "menuItem17");
            this.menuItem17.Click += new System.EventHandler(this.menuItem17_Click);
            // 
            // menuItem22
            // 
            this.menuItem22.Index = 1;
            resources.ApplyResources(this.menuItem22, "menuItem22");
            this.menuItem22.Click += new System.EventHandler(this.menuItem22_Click_1);
            // 
            // menuItem10
            // 
            this.menuItem10.Index = 1;
            this.menuItem10.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem11,
            this.menuItem12});
            resources.ApplyResources(this.menuItem10, "menuItem10");
            // 
            // menuItem11
            // 
            this.menuItem11.Index = 0;
            resources.ApplyResources(this.menuItem11, "menuItem11");
            this.menuItem11.Click += new System.EventHandler(this.menuItem11_Click);
            // 
            // menuItem12
            // 
            this.menuItem12.Index = 1;
            resources.ApplyResources(this.menuItem12, "menuItem12");
            this.menuItem12.Click += new System.EventHandler(this.menuItem12_Click);
            // 
            // menuItem1
            // 
            this.menuItem1.Index = 2;
            this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem5,
            this.menuItem6});
            resources.ApplyResources(this.menuItem1, "menuItem1");
            // 
            // menuItem5
            // 
            this.menuItem5.Index = 0;
            resources.ApplyResources(this.menuItem5, "menuItem5");
            this.menuItem5.Click += new System.EventHandler(this.menuItem5_Click);
            // 
            // menuItem6
            // 
            this.menuItem6.Index = 1;
            resources.ApplyResources(this.menuItem6, "menuItem6");
            this.menuItem6.Click += new System.EventHandler(this.menuItem6_Click);
            // 
            // menuItem2
            // 
            this.menuItem2.Index = 3;
            this.menuItem2.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem8,
            this.menuItem13});
            resources.ApplyResources(this.menuItem2, "menuItem2");
            // 
            // menuItem8
            // 
            this.menuItem8.Index = 0;
            resources.ApplyResources(this.menuItem8, "menuItem8");
            this.menuItem8.Click += new System.EventHandler(this.menuItem8_Click);
            // 
            // menuItem13
            // 
            this.menuItem13.Index = 1;
            resources.ApplyResources(this.menuItem13, "menuItem13");
            this.menuItem13.Click += new System.EventHandler(this.menuItem13_Click);
            // 
            // menuItem3
            // 
            this.menuItem3.Index = 4;
            this.menuItem3.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem9,
            this.menuItem14});
            resources.ApplyResources(this.menuItem3, "menuItem3");
            // 
            // menuItem9
            // 
            this.menuItem9.Index = 0;
            resources.ApplyResources(this.menuItem9, "menuItem9");
            this.menuItem9.Click += new System.EventHandler(this.menuItem9_Click);
            // 
            // menuItem14
            // 
            this.menuItem14.Index = 1;
            resources.ApplyResources(this.menuItem14, "menuItem14");
            this.menuItem14.Click += new System.EventHandler(this.menuItem14_Click);
            // 
            // menuItem4
            // 
            this.menuItem4.Index = 5;
            this.menuItem4.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem15,
            this.menuItem7,
            this.menuItem20,
            this.menuItem24});
            resources.ApplyResources(this.menuItem4, "menuItem4");
            // 
            // menuItem15
            // 
            this.menuItem15.Index = 0;
            resources.ApplyResources(this.menuItem15, "menuItem15");
            this.menuItem15.Click += new System.EventHandler(this.menuItem15_Click);
            // 
            // menuItem7
            // 
            this.menuItem7.Index = 1;
            resources.ApplyResources(this.menuItem7, "menuItem7");
            this.menuItem7.Click += new System.EventHandler(this.menuItem7_Click);
            // 
            // menuItem20
            // 
            this.menuItem20.Index = 2;
            resources.ApplyResources(this.menuItem20, "menuItem20");
            this.menuItem20.Click += new System.EventHandler(this.menuItem20_Click);
            // 
            // menuItem24
            // 
            this.menuItem24.Index = 3;
            resources.ApplyResources(this.menuItem24, "menuItem24");
            this.menuItem24.Click += new System.EventHandler(this.menuItem24_Click);
            // 
            // menuItem19
            // 
            this.menuItem19.Index = 6;
            this.menuItem19.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem25,
            this.menuItem27,
            this.menuItem26});
            resources.ApplyResources(this.menuItem19, "menuItem19");
            // 
            // menuItem25
            // 
            this.menuItem25.Index = 0;
            resources.ApplyResources(this.menuItem25, "menuItem25");
            this.menuItem25.Click += new System.EventHandler(this.menuItem25_Click);
            // 
            // menuItem27
            // 
            this.menuItem27.Index = 1;
            resources.ApplyResources(this.menuItem27, "menuItem27");
            this.menuItem27.Click += new System.EventHandler(this.menuItem27_Click);
            // 
            // menuItem26
            // 
            this.menuItem26.Index = 2;
            resources.ApplyResources(this.menuItem26, "menuItem26");
            this.menuItem26.Click += new System.EventHandler(this.menuItem26_Click);
            // 
            // menuItem21
            // 
            this.menuItem21.Index = 7;
            this.menuItem21.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem23});
            resources.ApplyResources(this.menuItem21, "menuItem21");
            // 
            // menuItem23
            // 
            this.menuItem23.Index = 0;
            resources.ApplyResources(this.menuItem23, "menuItem23");
            this.menuItem23.Click += new System.EventHandler(this.menuItem23_Click);