private void button1_Click(object sender, EventArgs e)
{
TrapeziaArea myclass = new TrapeziaArea(); //實例化類別物件
myclass.SD = Convert.ToDouble(textBox1.Text); //為梯形的上底賦值
myclass.XD = Convert.ToDouble(textBox2.Text); //為梯形的下底賦值
myclass.Height = Convert.ToDouble(textBox3.Text); //為梯形的高賦值
textBox4.Text = myclass.Area().ToString(); //計算梯形面積
}
private void button1_Click(object sender, EventArgs e)
{
TrapeziaArea myclass = new TrapeziaArea(); //实例化类对象
myclass.SD = Convert.ToDouble(textBox1.Text); //为梯形的上底赋值
myclass.XD = Convert.ToDouble(textBox2.Text); //为梯形的下底赋值
myclass.Height = Convert.ToDouble(textBox3.Text); //为梯形的高赋值
textBox4.Text = myclass.Area().ToString(); //计算梯形面积
}