private void button1_Click(object sender, EventArgs e)
{
//动态加载程序集并创建对象
IFunction objfunction = (IFunction)Assembly.LoadFrom("Function.dll").CreateInstance("Function.Function");
int a = Convert.ToInt32(this.textBox1.Text);
int b = Convert.ToInt32(this.textBox2.Text);
string result = "0";
//通过接口完成计算
switch (this.comboBox1.SelectedIndex)
{
case 0:
result = objfunction.Add(a, b).ToString();
break;
case 1:
result = objfunction.Sub(a, b).ToString();
break;
case 2:
result = objfunction.Multiply(a, b).ToString();
break;
case 3:
result = objfunction.Division(a, b).ToString();
break;
default:
break;
}
this.textBox3.Text = result;
}