The time-consuming operation of the main thread can cause the update of UI failed , but make the time-consuming operation by the background thread can avoid this.

Filename	Size	Update
UpdateUIDemo\UpdateUIDemo\App.xaml	323	2014-05-27
UpdateUIDemo\UpdateUIDemo\App.xaml.cs	308	2014-05-27
UpdateUIDemo\UpdateUIDemo\bin\Debug\UpdateUIDemo.exe	10240	2014-05-27
UpdateUIDemo\UpdateUIDemo\bin\Debug\UpdateUIDemo.pdb	30208	2014-05-27
UpdateUIDemo\UpdateUIDemo\bin\Debug\UpdateUIDemo.vshost.exe	11600	2014-05-27
UpdateUIDemo\UpdateUIDemo\bin\Debug\UpdateUIDemo.vshost.exe.manifest	490	2010-03-17
UpdateUIDemo\UpdateUIDemo\MainWindow.xaml	830	2014-05-27
UpdateUIDemo\UpdateUIDemo\MainWindow.xaml.cs	3036	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\App.g.cs	2221	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\App.g.i.cs	2221	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache	11026	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache	6378	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\GenerateResource.read.1.tlog	172	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\GenerateResource.write.1.tlog	404	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\MainWindow.baml	1243	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\MainWindow.g.cs	4547	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\MainWindow.g.i.cs	4547	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\TempPE\Properties.Resources.Designer.cs.dll	4608	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\UpdateUIDemo.csproj.FileListAbsolute.txt	1229	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\UpdateUIDemo.exe	10240	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\UpdateUIDemo.g.resources	1471	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\UpdateUIDemo.pdb	30208	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\UpdateUIDemo.Properties.Resources.resources	180	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\UpdateUIDemo_MarkupCompile.cache	291	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\UpdateUIDemo_MarkupCompile.i.cache	290	2014-05-27
UpdateUIDemo\UpdateUIDemo\Properties\AssemblyInfo.cs	2189	2014-05-27
UpdateUIDemo\UpdateUIDemo\Properties\Resources.Designer.cs	2874	2014-05-27
UpdateUIDemo\UpdateUIDemo\Properties\Resources.resx	5612	2014-05-27
UpdateUIDemo\UpdateUIDemo\Properties\Settings.Designer.cs	1097	2014-05-27
UpdateUIDemo\UpdateUIDemo\Properties\Settings.settings	201	2014-05-27
UpdateUIDemo\UpdateUIDemo\UpdateUIDemo.csproj	4301	2014-05-27
UpdateUIDemo\UpdateUIDemo.sln	878	2014-05-27
UpdateUIDemo\UpdateUIDemo.sln.docstates.suo	2054	2014-05-27
UpdateUIDemo\UpdateUIDemo.suo	26624	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug\TempPE	0	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86\Debug	0	2014-05-27
UpdateUIDemo\UpdateUIDemo\bin\Debug	0	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj\x86	0	2014-05-27
UpdateUIDemo\UpdateUIDemo\bin	0	2014-05-27
UpdateUIDemo\UpdateUIDemo\obj	0	2014-05-27
UpdateUIDemo\UpdateUIDemo\Properties	0	2014-05-27
UpdateUIDemo\UpdateUIDemo	0	2014-05-27
UpdateUIDemo	0	2014-05-27

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