8 Commits

3 changed files with 61 additions and 14 deletions

View File

@@ -7,7 +7,7 @@
<ImplicitUsings>enable</ImplicitUsings> <ImplicitUsings>enable</ImplicitUsings>
<GeneratePackageOnBuild>True</GeneratePackageOnBuild> <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
<Authors>ns.potapov</Authors> <Authors>ns.potapov</Authors>
<VersionPrefix>1.0.3</VersionPrefix> <VersionPrefix>1.0.6</VersionPrefix>
<Version>$(VersionPrefix)</Version> <Version>$(VersionPrefix)</Version>
</PropertyGroup> </PropertyGroup>

View File

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

View File

@@ -1,10 +1,24 @@
namespace Components using Components.Exceptions;
namespace Components
{ {
public enum Types : int
{
Exception = 0,
DeleteFirst = 1,
}
public partial class UserControlCheckedList : UserControl public partial class UserControlCheckedList : UserControl
{ {
private List<int> _lastCheckedIndexes = new List<int>();
public int MaxCheckedItemsCount { get; set; } = 1; public int MaxCheckedItemsCount { get; set; } = 1;
private Types typeOfMaxChecked = Types.DeleteFirst;
private EventHandler _onCheckedItemChangedEvent; private EventHandler _onCheckedItemChangedEvent;
public void ChangeTypeOfMaxChecked(Types type)
{
typeOfMaxChecked = type;
}
public event EventHandler CheckedItemChanged public event EventHandler CheckedItemChanged
{ {
add add
@@ -30,6 +44,28 @@
} }
} }
} }
public List<string> CheckedItems
{
get
{
List<string> list = new List<string>();
foreach(var item in checkedListBox.CheckedItems )
{
list.Add(item.ToString());
}
return list;
}
set
{
foreach (var item in value)
{
if (checkedListBox.Items.Contains(item))
{
checkedListBox.SetItemCheckState(checkedListBox.Items.IndexOf(item), CheckState.Checked);
}
}
}
}
public UserControlCheckedList() public UserControlCheckedList()
{ {
InitializeComponent(); InitializeComponent();
@@ -45,24 +81,22 @@
public void ClearCheckedListBoxValues() public void ClearCheckedListBoxValues()
{ {
checkedListBox.Items.Clear(); checkedListBox.Items.Clear();
_lastCheckedIndexes.Clear();
} }
private void checkedListBox_ItemCheck(object sender, ItemCheckEventArgs e) private void checkedListBox_ItemCheck(object sender, ItemCheckEventArgs e)
{ {
if (e.NewValue == CheckState.Checked) if (checkedListBox.CheckedItems.Count > MaxCheckedItemsCount)
{ {
_lastCheckedIndexes.Add(e.Index); if (typeOfMaxChecked == Types.Exception)
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 (typeOfMaxChecked == Types.DeleteFirst)
{
checkedListBox.SetItemChecked(0, false);
}
} }
else if (e.NewValue == CheckState.Unchecked)
{
_lastCheckedIndexes.Remove(e.Index);
}
_onCheckedItemChangedEvent?.Invoke(sender, e); _onCheckedItemChangedEvent?.Invoke(sender, e);
} }
} }