C#实验8Windows应用编程

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2 设计如图所示窗体。窗体上有两个按钮：一个显示文本，一个显示图片。单击上面按钮或按下 Alt+B键，可以弹出如图消息框。单击下面按钮也可显示。

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    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {                MessageBox.Show("单击了我","提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Warning);        }        private void button2_Click(object sender, EventArgs e)        {            MessageBox.Show("单击了我", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);        }        private void button1_KeyDown(object sender, KeyEventArgs e)        {            if (e.Alt&&e.KeyCode==Keys.B)            {                 MessageBox.Show("单击了我","提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Warning);            }        }        private void Form1_Load(object sender, EventArgs e)        {            this.KeyPreview = true;        }        private void button2_KeyDown(object sender, KeyEventArgs e)        {            if (e.Alt && e.KeyCode == Keys.B)            {                MessageBox.Show("单击了我", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);            }        }           }}

5窗体上有一个文本框（多行且带有垂直滚动条）、一个标签（字体颜色红色、自号16）、一个按钮（该按钮被单击时，实现将文本复制至标签）。

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 WindowsFormsApplication2{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            label1.Text = textBox1.SelectedText;        }    }}

6窗体有两个文本框：一个文本框最多输入字符6个；一个文本框输入任何内容都显示*号。再添加一个按钮、两个单选按钮。实现单击按钮后，根据单选按钮，将文本框中内容显示在标签。

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 frg{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            if (radioButton1.Checked)                label1.Text = textBox1.Text;            if (radioButton2.Checked)                label1.Text = textBox2.Text;        }            }}

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