如何获得单选按钮所选项目的文本？

您可以使用的Text 属性RadioButton。

private void button1_Click(object sender, EventArgs e)
    {
        if (radioButton1.Checked)
        {
            MessageBox.Show("You are playing "+radioButton1.Text);
        }

        else if (radioButton2.Checked)
        {
            MessageBox.Show("You are playing Maplestory "+"+radioButton2.Text);
        }

        else if (radioButton3.Checked)
        {
            MessageBox.Show("You are playing League "+"+radioButton3.Text);
        }
    }

解决方案2： 没有SelectedItem可供RadioButton控制的属性。

但您可以创建一个function将返回Name所选的的RadioButton

尝试这个：

    private String getSelectedRadioButtonName()
     {
            foreach (Control c in groupBox1.Controls)
            {
                if (c is RadioButton && ((RadioButton) c).Checked==true)
                {
                    return c.Text;
                }
            }
            return "No Game";
      }
    private void button1_Click(object sender, EventArgs e)
    {

            MessageBox.Show("You are playing "+getSelectedRadioButtonName());
    }