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參照

namespace _103303058_0518_01
{
public enum Sport
{
NONE,
BASEBALL,
TENNIS,
FOOTBALL,
BASKETBALL,
};


public class C_Person
{
public string Name = "未輸入"; //在每個變數前說明私密於否
public Sport Favorate_Sport = Sport.NONE;
}
}


設計者

/// 設計工具所需的變數。
private C_Person David;
/// </summary>



namespace _103303058_0518_01
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
David = new C_Person();
listBox_Favorate.SelectedIndex = (int)David.Favorate_Sport;
pictureBox1.Image = Image.FromFile("None.jpg");
textBox1.Text = David.Name;
}

private void listBox_Favorate_SelectedIndexChanged(object sender, EventArgs e)
{

switch ((Sport)listBox_Favorate.SelectedIndex)
{
case Sport.NONE:
pictureBox1.Image = Image.FromFile("None.jpg");
break;
case Sport.BASEBALL:
pictureBox1.Image = Image.FromFile("Baseball.jpg");
break;
case Sport.BASKETBALL:
pictureBox1.Image = Image.FromFile("Basketball.jpg");
break;
case Sport.FOOTBALL:
pictureBox1.Image = Image.FromFile("Football.jpg");
break;
case Sport.TENNIS:
pictureBox1.Image = Image.FromFile("Tennis.jpg");
break;
}
}

private void pictureBox2_Click(object sender, EventArgs e)
{
string str;
str = "你的姓名是" + textBox1.Text;

switch ((Sport)listBox_Favorate.SelectedIndex)
{
case Sport.NONE:
str += "\n你不喜歡運動";
break;
case Sport.BASEBALL:
str += "\n你最喜歡的運動是棒球";
break;
case Sport.BASKETBALL:
str += "\n你最喜歡的運動是籃球";
break;
case Sport.FOOTBALL:
str += "\n你最喜歡的運動是足球";
break;
case Sport.TENNIS:
str += "\n你最喜歡的運動是網球";
break;
}


MessageBox.Show(str, "生日&最喜歡運動", MessageBoxButtons.OK);
}

private void textBox1_TextChanged(object sender, EventArgs e)
{

}
}
}