我有一个基本的WPF-Application.It包含绑定到Datagrid的{{1}}。当从不同的线程向Collection添加项目时，我在Random获得以下异常。
AsyncObservableCollection一些代码：
注意：An unhandled exception of type 'System.InvalidOperationException' occurred in PresentationFramework.dll
Additional information: An ItemsControl is inconsistent with its items source.
"Information for developers (use Text Visualizer to read this):\r\nThis
exception was thrown because the generator for control
'System.Windows.Controls.DataGrid Items.Count:3' with name 'logPanel' has received sequence of CollectionChanged events that do not agree with the current state of the Items collection. The following differences were detected:\r
Accumulated count 1 is different from actual count 3. [Accumulated count is (Count at last Reset + #Adds - #Removes since last Reset).]\r
\n At index 0: Generator's item 'BorgingIskMainApp.Model.LogItem' is different from actual item 'BorgingIskMainApp.Model.LogItem'.
是AsyncObservableCollection
绑定
myLogItems初始化任务
public MainWindow()
{
myLogItems = new AsyncObservableCollection<LogItem>();
logPanel.ItemsSource = myLogItems;
}
我的方法
System.Windows.Application.Current.Dispatcher.BeginInvoke(
System.Windows.Threading.DispatcherPriority.Normal,(Action)delegate()
{
DocumentTest cg = new DocumentTest();
Task.Factory.StartNew(() => { cg.PerformWVSTest(myLogItems); });
});
我的对象
public void PerformWVSTest(ObservableCollection<LogItem> dgResults)
{
try
{
dgResults.Insert(0,lgItem.CreateNewLogItem(dgResults.Count, "Start WVS-Test", true));
....
}
}
任何人都知道可能导致此异常的原因是什么？
注意：异常可能随时发生。 public class LogItem
{
public LogItem() {
logId = 0;
logText = String.Empty;
isSuccess = true;
}
public Int32 logId { get; set; }
public String logText { get; set; }
public Boolean isSuccess { get; set; }
public LogItem CreateNewLogItem(Int32 pLogId, String pLogText, Boolean success)
{
ADF.Diagnostics.TextFileTracer.Write(pLogText);
return new LogItem { logId = pLogId, logText = pLogText, isSuccess = success };
}
}
发生
注2：代码Always
AsyncObservableCollectionAsyncCollection的来源：wpf-binding-to-an-asynchronous-collection
所有归功于对象的设计者！