还是不知道哪错了 伤心太平洋

Question

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        Student zhangfei, liubei;
        public void UpdateForm()
        {
            label3.Text = zhangfei.Name + "have" + zhangfei.Score + "分";
            label4.Text = liubei.Name + "have" + liubei.Score + "分";        }        
        
        
        public Form1()
        {
            InitializeComponent();
            zhangfei = new Student();
            liubei = new Student();
            zhangfei.Name = "zhangfei";
            zhangfei.Score = 100;
            liubei.Name = "liubei";
            liubei.Score = 100;
            UpdateForm;        }        private void button1_Click(object sender, EventArgs e)
        {
            zhangfei.GiveScore(5);
            UpdateForm;
        }        private void button2_Click(object sender, EventArgs e)
        {            liubei.TakeOffScore(3);
            UpdateForm;
        }
    }
}
namespace StudentScore
{
    public class Student
    {
        string Name;
        int Score;        public int GiveScore(int amount)
        {
            if (amount > 0)
            {
                score += amount;
                return amount;
            }
            else
            {
                MessageBox.Show("加分" + amount + "不是一个合理的值");
                return 0;
            }
        }        public int TakeOffScore(int amount)
        {
            if (Score >= amount && amount > 0)
            {
                Score -= amount;
                return amount;            }
            else
            {
                MessageBox.Show("减分" + amount + "不是一个合理的值");
                return 0;
            }        }
    }}

Answer 1

在Form1中加入Student定义所在的命名空间
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;
using StudentScore;//此处为加入的命名空间

Answer 2

竟然不知道哪错了？？？ 你不会运行么？直接把你的覆盖掉吧
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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        StudentScore.Student zhangfei, liubei;
        public void UpdateForm()
        {
            label3.Text = zhangfei.Name + "have" + zhangfei.Score + "分";
            label4.Text = liubei.Name + "have" + liubei.Score + "分";
        }
        public Form1()
        {
            InitializeComponent();
            zhangfei = new StudentScore.Student();
            liubei = new StudentScore.Student();
            zhangfei.Name = "zhangfei";
            zhangfei.Score = 100;
            liubei.Name = "liubei";
            liubei.Score = 100;
            UpdateForm();        }        private void button1_Click(object sender, EventArgs e)
        {
            zhangfei.GiveScore(5);
            UpdateForm();
        }        private void button2_Click(object sender, EventArgs e)
        {            liubei.TakeOffScore(3);
            UpdateForm();
        }
    }
}
namespace StudentScore
{
    public class Student
    {
        public string Name;
        public int Score;        public int GiveScore(int amount)
        {
            if (amount > 0)
            {
                Score += amount;
                return amount;
            }
            else
            {
                MessageBox.Show("加分" + amount + "不是一个合理的值");
                return 0;
            }
        }        public int TakeOffScore(int amount)
        {
            if (Score >= amount && amount > 0)
            {
                Score -= amount;
                return amount;            }
            else
            {
                MessageBox.Show("减分" + amount + "不是一个合理的值");
                return 0;
            }        }
    }}

Answer 3

 public Form1()
  {
  InitializeComponent();
  zhangfei = new Student();
  liubei = new Student();
  zhangfei.Name = "zhangfei";
  zhangfei.Score = 100;
  liubei.Name = "liubei";
  liubei.Score = 100;
  //UpdateForm;
  UpdateForm();
  }这个写法也太乱了，构造函数干啥的啊，就是初始化自己的变量的嘛，你竟让Form1去初始化Student类的属性
在Student类中加一个构造函数
public Student（string name，double score）
{
  this.name=name;
  this.score=score;
}
public Form1()
  {
  InitializeComponent();
  zhangfei = new Student();
  liubei = new Student();
  zhangfei.Name = "zhangfei";
  zhangfei.Score = 100;
  liubei.Name = "liubei";
  liubei.Score = 100;
  //UpdateForm;
  UpdateForm();
  }
改成
public Form1()
  {
  InitializeComponent();
  zhangfei = new Student("zhangfei";100);
  liubei = new Student("liubei";100);
  UpdateForm();
  }
看看是不是简洁了很多
最后提醒你提高你的结贴率，否则没人会理你的问题