Homemade WPF TextBox Validation validation required prompt and focus effects. Required user name and Email tips, does not satisfy the rule does not disappear, there is a warning. Tip of the non-mandatory identity cards and QQ number, regardless of the rules to meet or not, suggesting that only with the focus and that focus lost that disappear. Personally feel good effect.

WpfTextFocusVR
..............\WpfTextFocusVR
..............\WpfTextFocusVR.sln
..............\WpfTextFocusVR.suo
..............\..............\App.xaml
..............\..............\App.xaml.cs
..............\..............\bin
..............\..............\...\Debug
..............\..............\...\.....\WpfTextFocusVR.exe
..............\..............\...\.....\WpfTextFocusVR.pdb
..............\..............\...\.....\WpfTextFocusVR.vshost.exe
..............\..............\...\.....\WpfTextFocusVR.vshost.exe.manifest
..............\..............\MainWindow.xaml
..............\..............\MainWindow.xaml.cs
..............\..............\obj
..............\..............\...\x86
..............\..............\...\...\Debug
..............\..............\...\...\.....\App.g.cs
..............\..............\...\...\.....\App.g.i.cs
..............\..............\...\...\.....\DesignTimeResolveAssemblyReferences.cache
..............\..............\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
..............\..............\...\...\.....\GeneratedInternalTypeHelper.g.cs
..............\..............\...\...\.....\GeneratedInternalTypeHelper.g.i.cs
..............\..............\...\...\.....\GenerateResource.read.1.tlog
..............\..............\...\...\.....\GenerateResource.write.1.tlog
..............\..............\...\...\.....\MainWindow.baml
..............\..............\...\...\.....\MainWindow.g.cs
..............\..............\...\...\.....\MainWindow.g.i.cs
..............\..............\...\...\.....\SignUpFocusedUserControl.baml
..............\..............\...\...\.....\SignUpFocusedUserControl.g.cs
..............\..............\...\...\.....\SignUpFocusedUserControl.g.i.cs
..............\..............\...\...\.....\TempPE
..............\..............\...\...\.....\......\Properties.Resources.Designer.cs.dll
..............\..............\...\...\.....\WpfTextFocusVR.csproj.FileListAbsolute.txt
..............\..............\...\...\.....\WpfTextFocusVR.exe
..............\..............\...\...\.....\WpfTextFocusVR.g.resources
..............\..............\...\...\.....\WpfTextFocusVR.pdb
..............\..............\...\...\.....\WpfTextFocusVR.Properties.Resources.resources
..............\..............\...\...\.....\WpfTextFocusVR_MarkupCompile.cache
..............\..............\...\...\.....\WpfTextFocusVR_MarkupCompile.i.cache
..............\..............\...\...\.....\WpfTextFocusVR_MarkupCompile.i.lref
..............\..............\...\...\.....\WpfTextFocusVR_MarkupCompile.lref
..............\..............\Properties
..............\..............\..........\AssemblyInfo.cs
..............\..............\..........\Resources.Designer.cs
..............\..............\..........\Resources.resx
..............\..............\..........\Settings.Designer.cs
..............\..............\..........\Settings.settings
..............\..............\Rules
..............\..............\.....\EmailVR.cs
..............\..............\.....\IDCardNOVR.cs
..............\..............\.....\LengthVR.cs
..............\..............\.....\NullVR.cs
..............\..............\SignUpFocusedUserControl.xaml
..............\..............\SignUpFocusedUserControl.xaml.cs
..............\..............\WpfTextFocusVR.csproj

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