Question

我有一个带有BindingSource的datagridview，以Linq to 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();
    }

我在这里错过了什么吗？

最诚挚的问候，

布赖恩

Answer 1

Viola尝试了很多解决方案之后我有一个更好的解决方案，只需将插入和删除操作更改为bindingsource

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();
    }

使用LINQ to SQL的DataGridView CRUD操作

1 个答案: