动态创建按钮时，如何在if else语句上调用单个单选按钮？

Question

I have the code below, in button1_Click from someone in this forum, I cannot figure out what the next step is. Let say I have 4 radio buttons can someone show me an example of how to use the if else statement to each individual radio buttons based on their individual if else statement when I click button2?

var list = new List<string>
{
    "First radio text", "Second radio text", "Third radio text", "And so on"
};

this.panel1.SuspendLayout();
for (var i = 0; i < list.Count; i++)
{
    var r = new RadioButton();
    r.Text = list[i];
    r.Tag = i;
    r.Name = string.Format("r{0}", i);
    r.Dock = DockStyle.Top;
    r.CheckedChanged += r_CheckedChanged;
    this.panel1.Controls.Add(r);
    r.BringToFront();
}
this.panel1.ResumeLayout(true);

Answer 1

You can check which radio button sent the event by its name:

private void r_CheckedChanged(object sender, EventArgs e)
        {
            RadioButton radio = sender as RadioButton;

            if (radio.Name == "r1")
                MessageBox.Show("Radio 1 checked changed to: " + radio.Checked);
            else if (radio.Name == "r2")
                MessageBox.Show("Radio 2 checked changed to: " + radio.Checked);
            else if (radio.Name == "r3")
                MessageBox.Show("Radio 3 checked changed to: " + radio.Checked);
            else
                MessageBox.Show("Unknow radio button");
        }