我使用不同的线程并使用BackgroundWorker
时很新,所以我还没有完全理解所有内容。我已经在下面的程序的客户端发布了我的所有编码。
我遇到的问题 即使我使用BackgroundWorker
,我仍然会在从我加载数据时失去所有用户界面的功能WCF服务到我的WPF客户端应用程序。加载数据大约需要2-3分钟(约+ - 1500行数据),因此会造成非常糟糕的用户体验。
当数据加载到datagrid
时,是否有任何显而易见的事情可能会让UI失效?任何建议将不胜感激,谢谢! :)
更新代码:
public partial class pgSysproStock : Window
{
public pgSysproStock()
{
InitializeComponent();
SysproStock.WindowState = WindowState.Normal;
dgSysproStock.IsEnabled = false;
worker.DoWork += worker_DoWork;
worker.RunWorkerCompleted += worker_RunWorkerCompleted;
worker.WorkerReportsProgress = true;
worker.ProgressChanged += worker_ProgressChanged;
worker.RunWorkerAsync();
}
private readonly BackgroundWorker worker = new BackgroundWorker();
private async void worker_DoWork(object sender, DoWorkEventArgs e)
{
using (TruckServiceClient TSC = new TruckServiceClient())
{
List<AllStock> allStock = new List<AllStock>();
this.Dispatcher.Invoke((Action)(() =>
{
prgStockProgress.Visibility = Visibility.Visible;
}));
foreach (var item in await TSC.GetSysproStockAsync())
allStock.Add(new AllStock
{
Id = item.Id,
StockCode = item.StockCode,
Description = item.Description,
ConvFactAltUom = item.ConvFactAltUom,
ConvMulDiv = item.ConvMulDiv,
ConvFactOthUom = item.ConvFactOthUom,
MulDiv = item.MulDiv,
Mass = item.Mass,
Updated_Supplier = item.Updated_Supplier,
CycleCount = item.CycleCount,
ProductClass = item.ProductClass.ToString(),
UnitCost = item.UnitCost,
Discount = item.Discount,
Warehouse = item.Warehouse,
MinimumStock = item.MinimumStock,
MaximumStock = item.MaximumStock,
StockForNow = item.StockForNow,
CoilWidth = item.CoilWidth,
SheetCoilLength = item.SheetCoilLength,
MaterialThickness = item.MaterialThickness
});
e.Result = allStock.ToArray();
}
}
private void worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
this.prgStockProgress.Value = e.ProgressPercentage;
}
private void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
dgSysproStock.ItemsSource = (AllStock[])e.Result;
dgSysproStock.IsEnabled = true;
}
}
编辑:我还删除了async
&amp; await
来自我编码中的方法,但数据似乎仍未通过。
我在这里添加了一个断点:foreach (var item in await TSC.GetSysproStockAsync())
,我无法通过TSC.GetSysproStock())
代码。为什么要这样做?
答案 0 :(得分:2)
正确使用async / await:
public pgSysproStock()
{
InitializeComponent();
SysproStock.WindowState = WindowState.Normal;
this.UpdateStockAsync();
}
private async void UpdateStockAsync()
{
dgSysproStock.IsEnabled = false;
using (TruckServiceClient TSC = new TruckServiceClient())
{
var allStock = await TSC.GetSysproStockAsync().ToArray();
dgSysproStock.ItemsSource = allStock.Select(item =>
new AllStock
{
Id = item.Id,
StockCode = item.StockCode,
Description = item.Description,
ConvFactAltUom = item.ConvFactAltUom,
ConvMulDiv = item.ConvMulDiv,
ConvFactOthUom = item.ConvFactOthUom,
MulDiv = item.MulDiv,
Mass = item.Mass,
Updated_Supplier = item.Updated_Supplier,
CycleCount = item.CycleCount,
ProductClass = item.ProductClass.ToString(),
UnitCost = item.UnitCost,
Discount = item.Discount,
Warehouse = item.Warehouse,
MinimumStock = item.MinimumStock,
MaximumStock = item.MaximumStock,
StockForNow = item.StockForNow,
CoilWidth = item.CoilWidth,
SheetCoilLength = item.SheetCoilLength,
MaterialThickness = item.MaterialThickness
}).ToArray();
dgSysproStock.IsEnabled = true;
}
}
答案 1 :(得分:1)
这不是应该如何使用BackgroundWorker。尝试将数据传递到RunWorkerCompleted事件处理程序并从那里更新UI。
删除它:
this.Dispatcher.Invoke((Action)(() =>
{
dgSysproStock.ItemsSource = (allStock.ToArray());
dgSysproStock.IsEnabled = true;
}));
在DoWork事件处理程序中,将Result设置为您的数据:
e.Result = allStock.ToArray();
然后在RunWorkerCompleted事件处理程序中:
dgSysproStock.ItemsSource = (AllSTock[])e.Result;
dgSysproStock.IsEnabled = true;