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lab2_fix #2

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ns.potapov merged 3 commits from lab2_fix into lab2 2024-11-28 00:04:18 +04:00
Conversation 0 Commits 3 Files Changed 3 +20 -16
3 changed files with 20 additions and 16 deletions
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2
WinFormSolution/Components/Components.csproj
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@ -7,7 +7,7 @@
<ImplicitUsings>enable</ImplicitUsings>
<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
<Authors>ns.potapov</Authors>
<VersionPrefix>1.0.3</VersionPrefix>
<VersionPrefix>1.0.4</VersionPrefix>
<Version>$(VersionPrefix)</Version>
</PropertyGroup>

13
WinFormSolution/Components/Exceptions/MaxCheckedItemsCountExceedException.cs Normal file
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@ -0,0 +1,13 @@
namespace Components.Exceptions
{
internal class MaxCheckedItemsCountExceedException : Exception
{
public MaxCheckedItemsCountExceedException()
{
}
public MaxCheckedItemsCountExceedException(string? message) : base(message)
{
}
}
}

21
WinFormSolution/Components/UserControlCheckedList.cs
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@ -1,8 +1,9 @@
namespace Components
using Components.Exceptions;
namespace Components
{
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
@ -45,24 +46,14 @@
public void ClearCheckedListBoxValues()
{
checkedListBox.Items.Clear();
_lastCheckedIndexes.Clear();
}
private void checkedListBox_ItemCheck(object sender, ItemCheckEventArgs e)
{
if (e.NewValue == CheckState.Checked)
if (checkedListBox.CheckedItems.Count > MaxCheckedItemsCount)
{
_lastCheckedIndexes.Add(e.Index);
while (_lastCheckedIndexes.Count > MaxCheckedItemsCount)
{
checkedListBox.SetItemCheckState(_lastCheckedIndexes[0], CheckState.Unchecked);
}
checkedListBox.SetItemChecked(e.Index, false);
throw new MaxCheckedItemsCountExceedException("Превышено максимальное число выбранных элементов");
}
else if (e.NewValue == CheckState.Unchecked)
{
_lastCheckedIndexes.Remove(e.Index);
}
_onCheckedItemChangedEvent?.Invoke(sender, e);
}
}