034_使用goto语句在数组中搜索指定图书

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

namespace _034_使用goto语句在数组中搜索指定图书
{
    public partial class Frm_Main : Form
    {
        public Frm_Main()
        {
            InitializeComponent();//初始化窗体控件
            listBox1.Items.AddRange(G_str_array);//将数组元素罗列在listbox空间中,将现有的项添加到listbox1中；
        }
        
        string[] G_str_array = new string[]{"C#范例宝典","C#编程宝典","C#视频学","C#项目开发全程实录","C#项目开发实例自学手册","C#编程词典","C#实战宝典","C#经验技巧宝典","C#入门模式"};
        
        //初始化一个数组，声明一个数组并不代表着会初始化一个数组
        private void button1_Click(object sender, EventArgs e)
        {
            int i = 0;// define a counter
        label1:
            if (G_str_array[i].Contains(textBox1.Text))
            {
                listBox1.SelectedIndex = i; //找到并选中
                MessageBox.Show(textBox1.Text+"书已找到","提示");
                return;
            }
            i++;
            if (i < G_str_array.Length) goto label1;
            MessageBox.Show(textBox1.Text+"书未找到","提示");

        }
        private void Frm_Main_Load(object sender, EventArgs e)

        {
            listBox1.Items.AddRange(G_str_array);
        }
    }
}