Winforms 使用LINQ到SQL的DataGridView CRUD操作

我有一个datagridview，其中BindingSource到Linq到SQL作为数据源。当我尝试插入或删除数据时，gridview不会刷新

SampleDataContext context = new SampleDataContext();
    BindingSource bindingSource = new BindingSource();

    public Form1()
    {
        InitializeComponent();

        bindingSource.DataSource = context.Persons;
        PersonGridView.DataSource = bindingSource;
    }

    private void AddButton_Click(object sender, EventArgs e)
    {
        context.Persons.InsertOnSubmit(new Person { Name = , Address =  });
        context.SubmitChanges();
    }

    private void DeleteButton_Click(object sender, EventArgs e)
    {
        foreach (DataGridViewRow row in PersonGridView.SelectedRows)
        {
            var person = context.Persons.FirstOrDefault(x => x.ID == int.Parse(row.Cells[0].Value.ToString()));
            context.Persons.DeleteOnSubmit(person);
        }

        context.SubmitChanges();
    }   

我是不是遗漏了什么

致以最良好的祝愿

---

Brian

Viola在尝试了许多解决方案后，我有了一个更好的解决方案，只需将insert和delete操作更改为bindingsource即可

SampleDataContext context = new SampleDataContext();
    BindingSource bindingSource = new BindingSource();

    public Form1()
    {
        InitializeComponent();

        bindingSource.DataSource = context.Persons;
        PersonGridView.DataSource = bindingSource;
    }

    private void AddButton_Click(object sender, EventArgs e)
    {
        bindingSource.Add(new Person { Name = "Hello", Address = "Hahahaha123" });
        context.SubmitChanges();
    }

    private void DeleteButton_Click(object sender, EventArgs e)
    {
        foreach (DataGridViewRow row in PersonGridView.SelectedRows)
        {
            var person = context.Persons.FirstOrDefault(x => x.ID == int.Parse(row.Cells[0].Value.ToString()));
            bindingSource.Remove(person);
        }

        context.SubmitChanges();
    }

---

Viola在尝试了许多解决方案后，我有了一个更好的解决方案，只需将insert和delete操作更改为bindingsource即可

SampleDataContext context = new SampleDataContext();
    BindingSource bindingSource = new BindingSource();

    public Form1()
    {
        InitializeComponent();

        bindingSource.DataSource = context.Persons;
        PersonGridView.DataSource = bindingSource;
    }

    private void AddButton_Click(object sender, EventArgs e)
    {
        bindingSource.Add(new Person { Name = "Hello", Address = "Hahahaha123" });
        context.SubmitChanges();
    }

    private void DeleteButton_Click(object sender, EventArgs e)
    {
        foreach (DataGridViewRow row in PersonGridView.SelectedRows)
        {
            var person = context.Persons.FirstOrDefault(x => x.ID == int.Parse(row.Cells[0].Value.ToString()));
            bindingSource.Remove(person);
        }

        context.SubmitChanges();
    }