109 lines
3.2 KiB
C#
109 lines
3.2 KiB
C#
using Components.Exceptions;
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using System.Windows.Forms;
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namespace Components
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{
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public enum Types : int
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{
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Exception = 0,
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DeleteFirst = 1,
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}
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public partial class UserControlCheckedList : UserControl
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{
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public int MaxCheckedItemsCount { get; set; } = 1;
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private Types typeOfMaxChecked = Types.DeleteFirst;
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private EventHandler _onCheckedItemChangedEvent;
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public void ChangeTypeOfMaxChecked(Types type)
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{
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typeOfMaxChecked = type;
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}
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public event EventHandler CheckedItemChanged
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{
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add
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{
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_onCheckedItemChangedEvent += value;
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}
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remove
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{
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_onCheckedItemChangedEvent -= value;
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}
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}
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public string CheckedItem
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{
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get
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{
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return checkedListBox.CheckedItems[0] as string ?? string.Empty;
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}
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set
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{
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if (checkedListBox.Items.Contains(value))
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{
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checkedListBox.SetItemCheckState(checkedListBox.Items.IndexOf(value), CheckState.Checked);
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}
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}
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}
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public List<string> CheckedItemss
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{
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get
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{
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List<string> list = new List<string>();
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foreach (var item in checkedListBox.CheckedItems)
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{
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list.Add(item.ToString());
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}
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return list;
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}
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set
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{
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foreach (var item in value)
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{
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if (checkedListBox.Items.Contains(item))
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{
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checkedListBox.SetItemCheckState(checkedListBox.Items.IndexOf(item), CheckState.Checked);
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}
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}
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}
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}
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public UserControlCheckedList()
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{
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InitializeComponent();
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}
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public void SetCheckedListBoxValues(List<string> values)
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{
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ClearCheckedListBoxValues();
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foreach (var item in values)
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{
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checkedListBox.Items.Add(item);
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}
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}
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public void ClearCheckedListBoxValues()
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{
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checkedListBox.Items.Clear();
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}
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private void checkedListBox_ItemCheck(object sender, ItemCheckEventArgs e)
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{
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this.BeginInvoke((MethodInvoker)(
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() =>
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{
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if (checkedListBox.CheckedItems.Count > MaxCheckedItemsCount)
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{
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if (typeOfMaxChecked == Types.Exception)
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{
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MessageBox.Show("Превышено максимальное число выбранных элементов");
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checkedListBox.SetItemChecked(e.Index, false);
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}
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else if (typeOfMaxChecked == Types.DeleteFirst)
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{
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checkedListBox.SetItemCheckState(checkedListBox.Items.IndexOf(CheckedItem), CheckState.Unchecked);
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}
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}
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_onCheckedItemChangedEvent?.Invoke(sender, e);
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}));
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}
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}
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}
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