/// <summary>
/// 选中数据移动方法
/// </summary>
private async Task TransferItems(List <SelectedItem> source, List <SelectedItem> target)
{
if (!IsDisabled && Items != null)
{
var items = source.Where(i => i.Active).ToList();
source.RemoveAll(i => items.Contains(i));
target.AddRange(items);
LeftItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = false;
}
});
RightItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = true;
}
});
Value = default;
CurrentValueAsString = string.Join(",", RightItems.Select(i => i.Value));
if (OnSelectedItemsChanged != null)
{
await OnSelectedItemsChanged.Invoke(RightItems);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="value"></param>
/// <param name="result"></param>
/// <param name="validationErrorMessage"></param>
/// <returns></returns>
protected override bool TryParseValueFromString(string value, out TValue result, out string?validationErrorMessage)
{
validationErrorMessage = null;
if (typeof(TValue) == typeof(string))
{
result = (TValue)(object)value;
}
else if (typeof(IEnumerable <string>).IsAssignableFrom(typeof(TValue)))
{
var v = value.Split(",", StringSplitOptions.RemoveEmptyEntries);
result = (TValue)(object)new List <string>(v);
}
else if (typeof(IEnumerable <SelectedItem>).IsAssignableFrom(typeof(TValue)))
{
result = (TValue)(object)RightItems.Select(i => new SelectedItem(i.Value, i.Text)).ToList();
}
else
{
result = default !;