找不到CheckedListBox.SetItemCheckState方法

Question

    //选择地区
        else if (GlobalRadioButton7.Checked)
        {
            //对CheckedListBox3中的值(地区)进行选择
            for (int n = 0; n < CheckedListBox3.Items.Count; n++)
            {
                if (this.CheckedListBox3.Items[n].Selected)
                {
                    sGroup += CheckedListBox3.Items[n].Value + ",";
                    CheckedListBox1.SetItemCheckState(n, CheckState.Checked);
                }
            
            }
            sfGroup = "City";
            Group = 1;
        }求解决

Answer 1

添加DLL的引用了么？(in System.Windows.Forms.dll)