LINQ to SQL异步查询

leonheart

public partial>{　　protected void Page_Load(object sender, EventArgs e)
　　{
　　this.AddOnPreRenderCompleteAsync(
　　new BeginEventHandler(BeginAsyncOperation),
　　new EndEventHandler(EndAsyncOperation));
　　}
　　private ItemDataContext m_dataContext;
　　private IAsyncResult BeginAsyncOperation(object sender, EventArgs e,
　　AsyncCallback cb, object state)
　　{
　　this.m_dataContext = new ItemDataContext();
　　var query = (from item in this.m_dataContext.Items
　　orderby item.ItemID
　　select item).Skip(10).Take(10);
　　return this.m_dataContext.BeginExecuteQuery(query, cb, state);
　　}
　　private void EndAsyncOperation(IAsyncResult ar)
　　{
　　using (this.m_dataContext.Connection)
　　{
　　this.rptItems.DataSource = this.m_dataContext.EndExecuteQuery(ar);
　　this.rptItems.DataBind();
　　}
　　}
　　}