frmnumber.cs

用C#编写的实现火车查询功能的程序功能比较完整

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

namespace TrainSystem.UIL
{
    public partial class FrmNumber : Form
    {
        string str;
        TrainUIL frmMain;

        public FrmNumber(TrainUIL frmMain)
        {
            InitializeComponent();
            this.frmMain = frmMain;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                 str=((Button)sender).Text;
            }
            catch (Exception )
            {
                MessageBox.Show("请选择按钮！");
               
            }

            txtCodeNumber.Text += str;
        }

        private void button38_Click(object sender, EventArgs e)
        {
            txtCodeNumber.Clear();
        }

        private void button36_Click(object sender, EventArgs e)
        {
           string text= txtCodeNumber.Text;
           int num = text.Length-1;
           if (num <0)
           {
               MessageBox.Show("已清空！");
               return;

           }
           text=text.Remove(num, 1);
           txtCodeNumber.Text = text;
        }

        private void btnOk_Click(object sender, EventArgs e)
        {
           
            frmMain.txtTrainCodeSearch.Text = txtCodeNumber.Text;
            this.Close();             
           
        }
    }
}