addsmallclass.cs

图书馆管理系统的一个代码 很好的学习借鉴

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;
namespace BookManagementSystem
{
    public partial class AddSmallClass : Form
    {
        private ArrayList ALSmallClassOfBook, ALBigClassOfBook;
        public AddSmallClass(string s)
        {
            InitializeComponent();
            GetNewToDataBigClass();
            BigClasscmb.Text = s;
        }
        private void GetNewToDataBigClass()
        {
            BigClasscmb.Items.Clear();
            ALBigClassOfBook = Program.DataOperator.GetBigClassOfBook();
            foreach (string s in ALBigClassOfBook)
                BigClasscmb.Items.Add(s.ToString());
        }
        private string GetBigClassFromSmallClass(string SmallClass)
        {
            int count = ALSmallClassOfBook.Count;
            for(int i=0;i<count;i++)
                if (ALSmallClassOfBook[i].ToString().Contains(SmallClass))
                {
                    return ALSmallClassOfBook[i].ToString().Split(new Char[] { '+' })[0];
                }
            return null;
        }
        private void AddBtn_Click(object sender, EventArgs e)
        {
            string sdata = BigClasscmb.Text + "+" + SmallClassBox.Text;
            if (Program.DataOperator.AddSmallClass(sdata))
                MessageBox.Show("添加成功!");
            else
                MessageBox.Show("添加失败!");
        }
    }
}