当dataGridView bindingList的异步加载时，异常

Question

当我尝试加载datagridview asyncroon时，我会收到一条消息，并带有消息："由于对象的当前状态，操作无效。"当我将项目添加到bindingList并调用是必需的时，就会发生这种情况。没有螺纹，没有任何例外。非常感谢任何帮助。

这些是我用来将项目添加到DataGridView的方法：

public static class ExtensionMethods
{
    public static void LoadAsync<T>(this DataGridView gv, IEnumerable<T> enumerable)
    {
        gv.DataSource = new BindingList<T>();
        new Thread(() => gv.LoadItems(enumerable)) { IsBackground = true, Name = "AsyncLoad" }.Start();
    }
    private static void LoadItems<T>(this DataGridView gv, IEnumerable<T> enumerable)
    {
        foreach (T item in enumerable)          
            gv.AddItemToDataSourche(item);          
    }
    private static void AddItemToDataSourche<T>(this DataGridView gv, T item)
    {
        if (gv.InvokeRequired)
            gv.Invoke(new Action(() => gv.AddItemToDataSourche(item)));
        else
            ((BindingList<T>)gv.DataSource).Add(item); //This is where it goes wrong.
    }
}

这就是我实例化datagridview的方式：

public partial class Form1 : Form
{
    private DataGridView _gv = new DataGridView();
    private readonly IEnumerable<Person> _persons = new List<Person>
        {
            new Person {ID = 1, FirstName = "Test 1", LastName = "Someone"},
            new Person {ID = 2, FirstName = "Test 2", LastName = "Someone"},
            new Person {ID = 3, FirstName = "Test 3", LastName = "Someone"}
        };
    public Form1()
    {
        InitializeComponent();
        Controls.Add(_gv);
        _gv.LoadAsync(_persons);            
    }
}
public class Person
{
    public int ID { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

Answer 1

我认为datagridview控件不在该操作的准备状态下尝试使用"覆盖方法"：

protected override void OnShown(EventArgs e) {
  base.OnShown(e);
  _gv.LoadAsync(_persons);
}