Windorm CheckedListBox在TabControl中切换时无法保持勾选状态

需要手动来保持勾选状态，代码如下：

private  ArrayList m_chklist  =   new  ArrayList(); private   void  tabControl1_SelectedIndexChanged( object  sender, System.EventArgs e){     if ( this .tabControl1.SelectedIndex  ==   1 )    {         int  count  =   this .chklistDept.Items.Count;        m_chklist.Clear();         for ( int  i = 0 ;i < count;i ++ )        {             this .m_chklist.Add( this .chklistDept.GetItemChecked(i));        }    }     else     {         for ( int  i = 0 ;i < m_chklist.Count;i ++ )        {             this .chklistDept.SetItemChecked(i,Convert.ToBoolean(m_chklist[i]));        }    }}