使用 LINQ to SQL 的 DataGridView CRUD 操作答案

【问题标题】：DataGridView CRUD Operation with LINQ to SQL使用 LINQ to SQL 的 DataGridView CRUD 操作
【发布时间】：2013-04-11 01:47:31
【问题描述】：

我有一个带有 BindingSource 的 datagridview 到 Linq to SQL 作为数据源。当我尝试插入或删除数据时，gridview 没有刷新。

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？

最好的问候，

布赖恩

【问题讨论】：

标签： winforms linq-to-sql datagridview bindingsource

【解决方案1】：

Viola 在尝试了许多解决方案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绑定源

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();
    }

【讨论】：