ns.potapov/PIbd-31_PotapovNS_COP_20
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Добавил возможность указать максимальное количество чекнутых Item;
При достижении макс. количества последний чекнутый становится не чекнутым;
This commit is contained in:
Никита Потапов 2024-11-27 23:40:10 +04:00
parent aefab8a83b
commit d5384363ab
1 changed files with 13 additions and 3 deletions
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16
WinFormSolution/Components/UserControlCheckedList.cs
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@ -2,6 +2,8 @@
{
public partial class UserControlCheckedList : UserControl
{
private List<int> _lastCheckedIndexes = new List<int>();
public int MaxCheckedItemsCount { get; set; } = 1;
private EventHandler _onCheckedItemChangedEvent;
public event EventHandler CheckedItemChanged
{
@ -43,16 +45,24 @@
public void ClearCheckedListBoxValues()
{
checkedListBox.Items.Clear();
_lastCheckedIndexes.Clear();
}
private void checkedListBox_ItemCheck(object sender, ItemCheckEventArgs e)
{
for (int i = 0; i < checkedListBox.Items.Count; i++)
if (e.NewValue == CheckState.Checked)
{
if (i != e.Index)
_lastCheckedIndexes.Add(e.Index);
while (_lastCheckedIndexes.Count > MaxCheckedItemsCount)
{
checkedListBox.SetItemChecked(i, false);
checkedListBox.SetItemCheckState(_lastCheckedIndexes[0], CheckState.Unchecked);
}
}
else if (e.NewValue == CheckState.Unchecked)
{
_lastCheckedIndexes.Remove(e.Index);
}
_onCheckedItemChangedEvent?.Invoke(sender, e);
}
}