/// <summary>
/// 异步读取单个实例
/// <para>框架</para>
/// </summary>
protected void BeginReadEntityFrame()
{
if (BlockedByUnsaved())
{
return;
}
if (CondEntity == null)
{
return;
}
TryCancelTask();
TaskMgt = DHelper.StartTask(() =>
{
Window dlg = default;
try
{
dlg = ShowDlgWait();
CtxEntity = new Ctx();
Task <T> t = CondEntity.SingleOrDefaultAsync(TokenMgt.Token);
t.Wait();
if (TaskMgt.Status == TaskStatus.Canceled)
{
return;
}
Entity = t.Result;
IsNew = false;
IsEditing = false;
BuildEntityView();
}
catch (Exception ex) { ReadFailed(ex); }
finally { TryCloseDlg(dlg); }
});
}
/// <summary>
/// 读取单个实例
/// <para>框架</para>
/// </summary>
/// <param name="query_condition"></param>
/// <returns></returns>
protected bool ReadEntityFrame(Func <DbSet <T>, IQueryable <T> > query_condition)
{
if (BlockedByUnsaved())
{
return(false);
}
try
{
CtxEntity = new Ctx();
CondEntity = query_condition(CtxEntity.Set <T>());
Entity = CondEntity.SingleOrDefault();
IsNew = false;
IsEditing = false;
BuildEntityView();
return(true);
}
catch (Exception ex) { return(ReadFailed(ex)); }
}
/// <summary>
/// 读取单个实例
/// <para>框架</para>
/// </summary>
/// <returns></returns>
protected bool ReadEntityFrame()
{
if (BlockedByUnsaved())
{
return(false);
}
if (CondEntity == null)
{
return(false);
}
try
{
CtxEntity = new Ctx();
Entity = CondEntity.SingleOrDefault();
IsNew = false;
IsEditing = false;
BuildEntityView();
return(true);
}
catch (Exception ex) { return(ReadFailed(ex)); }
}
