/// <summary>
/// 引发<see cref="DataLoading"/>事件
/// </summary>
public void OnDataLoading(DataLoadingEventArgs e)
{
if (DataLoading != null)
{
DataLoading(this, e);
}
}
private void SearchManager_DataLoading(object sender, DataLoadingEventArgs e)
{
if (!TryCancelEdit())
{
e.Cancel = true;
}
else
{
this.m_inOperating = false;
this.State = StateType.View;
}
}
/// <summary>
/// 根据查询条件查询数据，并设置查询历史，引发<see cref="DataLoading"/>和<see cref="DataLoaded"/>事件
/// </summary>
/// <param name="searchExpression"></param>
/// <param name="searchOrders"></param>
public void LoadData(ISearchExpression searchExpression, IList <ISearchOrder> searchOrders)
{
lock (m_syncObject)
{
//if (m_loadingThread != null && m_loadingThread.IsAlive)
//{
// m_loadingThread.Abort();
// m_loadingThread.Join();
//}
//if (m_isDataLoding)
//{
// throw new InvalidUserOperationException("请先停止搜索才能重新开始搜索！");
//}
// Reload也调用此函数，不能在这里设置
//this.FirstResult = 0;
if (m_asyncManager != null && m_asyncManager.IsWorkerBusy)
{
return;
}
SetHistory(searchExpression, searchOrders);
this.FillSearchAdditionals(ref searchExpression, ref searchOrders);
DisposeAsyncManager();
DataLoadingEventArgs e = new DataLoadingEventArgs(searchExpression, searchOrders);
OnDataLoading(e);
if (e.Cancel)
{
return;
}
//if (m_loadingThread != null && m_loadingThread.IsAlive)
//{
// m_loadingThread.Abort();
//}
//// 线程运行了就不能重新启动，要重新建一个
//m_loadingThread = new Thread(new ParameterizedThreadStart(ThreadLoadData));
//m_loadingThread.IsBackground = true;
//if (asyncOperation == null)
//{
// this.asyncOperation = System.ComponentModel.AsyncOperationManager.CreateOperation(null);
// this.operationCompleted = new SendOrPostCallback(this.AsyncOperationCompleted);
//}
//m_isDataLoding = true;
//m_loadingThread.Start(e);
InitAsyncManager(e);
m_asyncManager.StartWorker(SystemConfiguration.UseMultiThread);
}
}
private void InitAsyncManager(DataLoadingEventArgs e)
{
m_asyncManager = new AsyncManager <object, DataLoadedEventArgs>(this.Name, new DataLoadWorker(this, e));
m_asyncManager.WorkerDone += new EventHandler <WorkerDoneEventArgs <DataLoadedEventArgs> >(LoadWork_WorkerDone);
m_asyncManager.WorkerProgress += new EventHandler <WorkerProgressEventArgs <object> >(m_asyncManager_WorkerProgress);
}
private void SearchManager_DataLoading(object sender, DataLoadingEventArgs e)
{
if (!TryCancelEdit())
{
e.Cancel = true;
}
else
{
this.m_inOperating = false;
this.State = StateType.View;
}
}
private void searchManager_DataLoading(object sender, DataLoadingEventArgs e)
{
if (e.Cancel)
return;
ISearchManager sm = sender as ISearchManager;
if (progressForm == null)
{
progressForm = new ProgressForm();
progressForm.ProgressStopped += new EventHandler(progressForm_ProgressStopped);
}
System.Threading.Interlocked.Increment(ref m_progressDoings);
if (!progressForm.IsActive)
{
progressForm.Start(this, "查找");
}
}