C#——Windows程序， 输入联系人姓名和电话号码并保存到结构体数组中，

C#——Windows程序，

输入联系人姓名和电话号码并保存到结构体数组中，

使用foreach语句迭代查询指定联系人的电话号码

 

设计以下界面

编写代码

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

 

namespace aa

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        Contacts[] con=new Contacts [100];

        int i = 0;

        private void button1_Click(object sender, EventArgs e)

        {

            string x = textBox1.Text;

            string y = textBox2.Text;

            con[i].name = x;

            con[i].phone = y;

            i++;

            label3.Text = "成功添加"+i+"条记录";

            textBox1.Text = "";

            textBox2.Text = "";

        }

 

        /*第一种方法

         private void button2_Click(object sender, EventArgs e)

        {

            label5.Text = "查无此人";

            foreach (Contacts  xx in con)

            {

                if(xx.name ==textBox3.Text )

                {

                    label5.Text = "查找成功！此人的电话号码为："+xx.phone;

                }

            }

        }*/

        //第二种方法

        private void button2_Click(object sender, EventArgs e)

        {

            Boolean flag = false;

            foreach (Contacts xx in con)

            {

                if (xx.name == textBox3.Text)

                {

                    flag = true;

                    label5.Text = "查找成功！此人的电话号码为：" + xx.phone;

                }

            }

            if(flag==false)

            {

                label5.Text = "查无此人?";

            }

 

        }

    }

    struct Contacts 

    {

        public string name;

        public string phone;

    }

}

 

 

运行结果：