private void OnDataGridItemChanged(DataGridItemChangedEventArgs eventArgs)
{
if (eventArgs.IsChanged == false)
{
return;
}
if (eventArgs.NewItem is LotteryDto newItem && eventArgs.OldItem is LotteryDto oldItem)
{
_ = _lotteryService.UpdateAsync(newItem);
}
}
private void OnDataGridItemChanged(DataGridItemChangedEventArgs eventArgs)
{
if (eventArgs.IsChanged == false)
{
return;
}
if (eventArgs.NewItem is CityPositionDto newItem && eventArgs.OldItem is CityPositionDto oldItem)
{
if (CityPositions.FirstOrDefault(p => p.TeleCmd == newItem.TeleCmd && object.Equals(p, newItem) == false) != null)
{
_dialogService.ShowInformation("传送命令重复");
newItem.TeleCmd = oldItem.TeleCmd;// 此时新值还未更新至ui
}
else
{
_ = _cityPositionService.UpdateAsync(newItem);
}
}
}
private void OnDataGridItemChanged(DataGridItemChangedEventArgs eventArgs)
{
if (eventArgs.IsChanged == false)
{
return;
}
if (eventArgs.NewItem is HomePositionDto newItem && eventArgs.OldItem is HomePositionDto oldItem)
{
if (newItem.SteamID != oldItem.SteamID)
{
_dialogService.ShowInformation("无法更改SteamID");
newItem.SteamID = oldItem.SteamID;// 此时新值还未更新至ui
}
else
{
_ = _homePositionService.UpdateAsync(newItem);
}
}
}
private void OnDataGridItemChanged(DataGridItemChangedEventArgs eventArgs)
{
if (eventArgs.IsChanged == false)
{
return;
}
if (eventArgs.NewItem is GoodsDto newItem && eventArgs.OldItem is GoodsDto oldItem)
{
if (GoodsItems.FirstOrDefault(p => p.BuyCmd == newItem.BuyCmd && object.Equals(p, newItem) == false) != null)
{
_dialogService.ShowInformation("购买命令重复");
newItem.BuyCmd = oldItem.BuyCmd;// 此时新值还未更新至ui
}
else
{
_ = _goodsService.UpdateAsync(newItem);
}
}
}
public object Convert(object value, object parameter)
{
DataGridItemChangedEventArgs itemChangedEventArgs = new DataGridItemChangedEventArgs();
DataGridCellEditEndingEventArgs args = (DataGridCellEditEndingEventArgs)value;
Type itemType = args.Row.Item.GetType();
if (args.Column is DataGridBoundColumn dataGridBoundColumn)
{
Binding binding = dataGridBoundColumn.Binding as Binding;
string propertyName = binding.Path.Path;
itemChangedEventArgs.BindPath = propertyName;
PropertyInfo propertyInfo = itemType.GetProperty(propertyName);
itemChangedEventArgs.OldItem = ObjectClone.CopyProperties(args.Row.Item, itemType);
BindingExpression bindingExpression = args.EditingElement.GetBindingExpression(TextBox.TextProperty);
bindingExpression.UpdateSource();
itemChangedEventArgs.NewItem = args.Row.Item;
itemChangedEventArgs.IsChanged = !object.Equals(propertyInfo.GetValue(itemChangedEventArgs.OldItem),
propertyInfo.GetValue(itemChangedEventArgs.NewItem));
}
#region Old
//Type itemType = args.Row.Item.GetType();
//itemChangedEventArgs.IsNewItem = args.Row.IsNewItem;
//if (itemChangedEventArgs.IsNewItem == false)
//{
// itemChangedEventArgs.OldItem = ObjectClone.CopyProperties(args.Row.Item, itemType);
//}
//if (args.Column is DataGridBoundColumn dataGridBoundColumn)
//{
// Binding binding = dataGridBoundColumn.Binding as Binding;
// string propertyName = binding.Path.Path;
// PropertyInfo propertyInfo = itemType.GetProperty(propertyName);
// BindingExpression bindingExpression = args.EditingElement.GetBindingExpression(TextBox.TextProperty);
// bindingExpression.UpdateSource();
// itemChangedEventArgs.NewItem = args.Row.Item;
// if (itemChangedEventArgs.IsNewItem)
// {
// itemChangedEventArgs.IsChanged = true;
// }
// else
// {
// itemChangedEventArgs.IsChanged = !object.Equals(propertyInfo.GetValue(itemChangedEventArgs.OldItem),
// propertyInfo.GetValue(itemChangedEventArgs.NewItem));
// }
//}
#endregion
#region Old
//if (args.EditingElement is TextBox textBox)
//{
//if (string.IsNullOrEmpty(textBox.Text) == false)
//{
// Type itemType = itemChangedEventArgs.OldItem.GetType();
// PropertyInfo propertyInfo = itemType.GetProperty(propertyName);
// Type metaType = propertyInfo.PropertyType;
// if (metaType.IsGenericType && metaType.GetGenericTypeDefinition() == typeof(Nullable<>))
// {
// metaType = propertyInfo.PropertyType.GetGenericArguments()[0];
// }
// try
// {
// object _value = System.Convert.ChangeType(textBox.Text, metaType);
// itemChangedEventArgs.NewItem = ObjectClone.CopyProperties(itemType, itemChangedEventArgs.OldItem);
// propertyInfo.SetValue(itemChangedEventArgs.NewItem, _value);
// }
// catch (Exception)
// {
// ApplicationCommands.Undo.Execute(null, textBox);
// //Log.Error("DataGridCellEditEndingEventArgs转换失败", e);
// }
//}
//}
#endregion
return(itemChangedEventArgs);
}
