form1.cs

C#下制作的学生数据库

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

namespace Student_database
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Button button1;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		OleDbConnection conn;
		private System.Windows.Forms.Button button2;
		OleDbCommand dbCommand;
		OleDbDataReader dbReader;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

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

		/// <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()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 32);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "Student Number";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(16, 80);
			this.label2.Name = "label2";
			this.label2.TabIndex = 1;
			this.label2.Text = "Student Name";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(16, 128);
			this.label3.Name = "label3";
			this.label3.TabIndex = 2;
			this.label3.Text = "Student Age";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(136, 32);
			this.textBox1.Name = "textBox1";
			this.textBox1.TabIndex = 3;
			this.textBox1.Text = "";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(136, 80);
			this.textBox2.Name = "textBox2";
			this.textBox2.TabIndex = 4;
			this.textBox2.Text = "";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(136, 128);
			this.textBox3.Name = "textBox3";
			this.textBox3.TabIndex = 5;
			this.textBox3.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(16, 208);
			this.button1.Name = "button1";
			this.button1.TabIndex = 6;
			this.button1.Text = "Add";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(112, 208);
			this.button2.Name = "button2";
			this.button2.TabIndex = 7;
			this.button2.Text = "Read";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(368, 333);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.button2,
																		  this.button1,
																		  this.textBox3,
																		  this.textBox2,
																		  this.textBox1,
																		  this.label3,
																		  this.label2,
																		  this.label1});
			this.Name = "Form1";
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			int sno = Convert.ToInt32(textBox1.Text);
			int sage = Convert.ToInt32(textBox3.Text);
			string insertstr = "Insert into personal_details values("+sno+",'"+textBox2.Text+"',"+sage+")";
			dbCommand = new OleDbCommand(insertstr, conn);
			try
			{
				conn.Open();
				dbCommand.ExecuteNonQuery();
			}
			catch(Exception ex)
			{
				MessageBox.Show("Connection failed "+ex);
			}
			conn.Close();
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			conn = new System.Data.OleDb.OleDbConnection();
			conn.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source= g:\c#\Student_details.mdb";

		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			conn.Open();
			string selectstr = "select * from personal_details";
			dbCommand = new OleDbCommand(selectstr, conn);
			try
			{
				dbReader = dbCommand.ExecuteReader();
				
			}
			catch(Exception ex)
			{
				MessageBox.Show("Connection Failed" +ex);
			}
			dbReader.Read();
			textBox1.Text = dbReader[0].ToString();
			textBox2.Text = dbReader[1].ToString();
			textBox3.Text = dbReader[2].ToString();

		}
	}
}