Question

我有一个datagridview，我需要每秒从数据库刷新一次。我编写了这段代码，以便我的UI不会冻结，数据获取操作在后台运行，但它仍然会冻结/滞后我的UI。我需要你的专业知识让我知道我在这里犯了什么错误。

我有一个主表单，我在这里调用名为Symbols的表单。

Symbols childForm1 = new Symbols();
childForm1.MdiParent = this;
this.SplitContainer2.Panel1.Controls.Add(childForm1);
childForm1.Dock = DockStyle.Fill;
childForm1.Show();

符号形式的代码 - ＆gt;

public DataSet Result { get { return (DataSet)this.dataGridView1.DataSource; } set { this.dataGridView1.DataSource = value.Tables[0]; } }

private Task<DataSet> StartBackgroundWork()
    {
    return new WorkItem().DoWork();
    }
private void Form_Load(object sender, EventArgs e)
{
    System.Windows.Forms.Timer MyTimer = new System.Windows.Forms.Timer();
    MyTimer.Interval = (1000);
MTimer.Tick += MyTimer_Tick;
MyTimer.Start();
    }
private void MyTimer_Tick(object sender, EventArgs e)
{
    this.StartBackgroundWork()
                             .ContinueWith((t) => this.Result = t.Result, TaskScheduler.FromCurrentSynchronizationContext()); ;
    }
public class WorkItem
{
    public Task<DataSet> DoWork()
    {
    return Task.Factory.StartNew<DataSet>(this.PerformWork);
    }

    private DataSet PerformWork()
    {
    DataSet dt = new DataSet();
    ServiceReference1.tblOrder obj = new ServiceReference1.tblOrder();
    obj.order_id = login.client_id;
    ServiceReference1.Service1Client objService = new ServiceReference1.Service1Client();
    dt = objService.symboldata(obj);
    return dt;
    }
}

Answer 1

使用 BackgroundWorker 类来避免冻结ui。

每秒C＃TPL更新Gridview

1 个答案: