C#实验8Windows应用编程

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;
}

}
}