namespace WinFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void radioButton1_Click(object sender, EventArgs e)
{
string str = "";
if (radioButton1.Checked)
{
str = radioButton1.Text;
}
MessageBox.Show(str);
}
}
}
/*
run:
radioButton1
*/