急求一个关于checkedlistbox的问题

Question

 private void btnupmove_Click(object sender, EventArgs e)
        {
            if (checkedListBox1.SelectedIndex > 0)
            {
                object selstr = checkedListBox1.Items[checkedListBox1.SelectedIndex - 1];
                checkedListBox1.Items[checkedListBox1.SelectedIndex - 1] = checkedListBox1.SelectedItem;
                checkedListBox1.Items[checkedListBox1.SelectedIndex] = selstr;
                checkedListBox1.SelectedItem = checkedListBox1.Items[checkedListBox1.SelectedIndex - 1];
            } 
        }
这段代码可以实现item的向上移动，但是前面的checked事件并没有随着项移动，怎么在移动的时候同时chencked也移动呢，谢谢了~~~~~~~

Answer 1

if (checkedListBox1.SelectedIndex > 0)
{
    object selstr = checkedListBox1.Items[checkedListBox1.SelectedIndex - 1];
    bool b1 = checkedListBox1.CheckedItems.Cast<object>().Any(x => x == checkedListBox1.Items[checkedListBox1.SelectedIndex - 1]);
    bool b2 = checkedListBox1.CheckedItems.Cast<object>().Any(x => x == checkedListBox1.Items[checkedListBox1.SelectedIndex]);
    checkedListBox1.Items[checkedListBox1.SelectedIndex - 1] = checkedListBox1.SelectedItem;
    checkedListBox1.Items[checkedListBox1.SelectedIndex] = selstr;
    checkedListBox1.SelectedItem = checkedListBox1.Items[checkedListBox1.SelectedIndex - 1];
    checkedListBox1.SetItemChecked(checkedListBox1.SelectedIndex, b2);
    checkedListBox1.SetItemChecked(checkedListBox1.SelectedIndex + 1, b1);
} 

Answer 2

那个可以再问一下吗？checkedlistbox可以按一个快捷键来完成以一个选择的和第二个选择的中间的项的全选吗？谢谢了~~~~

Answer 3

int index = 0;
var query = (from x
            in checkedListBox1.Items.Cast<object>()
            let i = ++index
            where checkedListBox1.CheckedItems.Cast<object>().Any(y => y == x)
            select i).ToList();
for (int i = query.Min(); i < query.Max(); i++)
    checkedListBox1.SetItemChecked(i, true);