错误绑定Gridview:"当前的TransactionScope已经完成"

Question

我正在从Gridview发送的事件中进行级联删除.删除在交易中.这是简化的代码:

protected void btnDeleteUser_Click(object sender, EventArgs e)
{
    DataContext db;
    db = new DataContext();

    using (TransactionScope ts = new TransactionScope())
    {
        try
        {
            //delete some data
            db.SubmitChanges();

            ts.Complete();
        }
        catch (Exception ex)
        {
            // handle error
        }
        finally
        {
            db.Dispose();
            BindGridView();
        }
    }
}


private void BindGridView()
{
    DataContext db;

    db = new DataContext();

    GridView.DataSource = <my query>

    GridView.DataBind();     <========Exception

    db.Dispose();
}

对网格的DataBind()方法的调用失败,出现此异常:"当前的TransactionScope已经完成." 为什么？

当然,TransactionScope在那时完成,它应该完成.当我删除TransactionScope时,它的工作原理.

Answer 1

将BindGridView()移到事务范围之外.

    using (TransactionScope ts = new TransactionScope())
    {
        try
        {
            //delete some data
            db.SubmitChanges();

            ts.Complete();
        }
        catch (Exception ex)
        {
            // handle error
        }
        finally
        {
            db.Dispose();
        }
    }
    BindGridView();