你要用一个异或操作符来控制比如说有两个radiobutton:radiabutton1和radiobutton2:
 private void radioButton1_CheckedChanged(object sender, System.EventArgs e)
{
if(this.radioButton2.Checked)
{
this.radioButton1.Checked=false;
}
} private void radioButton2_CheckedChanged(object sender, System.EventArgs e)
{
if(this.radioButton1.Checked)
this.radioButton2.Checked=false;
}
                                           wish u good luck
                                               Greatsft