protected void CheckBoxListl SelectedIndexChanged (object sender, EventArgs int 1 string str="您喜爱的球类运动是:<br>" for (i=0: i< CheckBoXList1 Items Count i++) if(CheckBoxList1. Items[i]. Selected) str + CheckBoxList1 Items i] Value +"<br> Labell Text strprotected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e) { int i; string str = "您喜爱的球类运动是：<br>"; for (i = 0; i < CheckBoxList1.Items.Count; i++) if (CheckBoxList1.Items[i].Selected) str += CheckBoxList1.Items[i].Value + "<br>"; Label1.Text = str; }