ObservableCollection新增数据前判断数据是否存在

public class MyDataModel
{
    public int Id { get; set; }
    public string Name { get; set; }

    
}

public static void Main()
    {
        // 创建 ObservableCollection
        ObservableCollection<MyDataModel> myDataCollection = new ObservableCollection<MyDataModel>
        {
            new MyDataModel { Id = 1, Name = "Item 1" },
            new MyDataModel { Id = 2, Name = "Item 2" },
            new MyDataModel { Id = 3, Name = "Item 3" }
        };

        // 要添加的项
        MyDataModel newItem = new MyDataModel { Id = 2, Name = "Item 2" }; // Id 已存在

        // 使用 LINQ 检查是否已存在
        if (!myDataCollection.Any(item => item.Id == newItem.Id))
        {
            myDataCollection.Add(newItem);
            Console.WriteLine($"Item with Id {newItem.Id} added.");
        }
        else
        {
            Console.WriteLine($"Item with Id {newItem.Id} already exists.");
        }

        // 输出当前集合中的项
        foreach (var item in myDataCollection)
        {
            Console.WriteLine($"Id: {item.Id}, Name: {item.Name}");
        }
    }