private void Change(object sender, EventArgs e)
{
Color = Color.FromArgb(RedRGBNum.Number, GreenRGBNum.Number, BlueRGBNum.Number);
ChangeColor?.Invoke(color);
}
private void redButton_CheckedChanged(object sender, EventArgs e)
{
ChangeColor?.Invoke(Color.Red);
}
private void blueButton_CheckedChanged(object sender, EventArgs e)
{
ChangeColor?.Invoke(Color.Blue);
}
private void greenButton_CheckedChanged(object sender, EventArgs e)
{
ChangeColor?.Invoke(Color.Green);
}
//构造器，默认
public void OnChange()
{
//事件触发方法
ChangeColor?.Invoke();//C#6语法，?.空值传播运算符
}
public void Change(string color)
{
ColorChangeDelegate?.Invoke(color);
}