Question

C#winform listView CheckBoxes 全选，反选怎么做

Answer 1

for (int i = 0; i < checkedListBox1.Items .Count; i++)
{
checkedListBox1.SetItemChecked(i, true);
}

全不选

for (int i = 0; i < checkedListBox1.Items .Count; i++)
{
checkedListBox1.SetItemChecked(i, false);
}