1、新建了一个用户控件，里面画了一个实心圆，以及一个文本控件的组合，当作我要实验使用的用户控件(TestUserControl)。 2、在主窗体里面进行引用，可以看到引用以后，会在工具箱上显示新增的用户控件3、为了测试方便，我直接在先前的Lo'gin页面直接进行添加该用户控件，效果如下。 4、

//xaml<DataGrid.ContextMenu><ContextMenu><MenuItemHeader="SerializeBinary"Command="{BindingBinSerializeCmd}"CommandParameter="{BindingRelativeSource={Relativ

Install-packagenewtonsoft.json  <DataGrid.ContextMenu><ContextMenu><MenuItemHeader="ExportSelected"Command="{BindingExportSelectedCmd}"CommandParameter="{BindingRelativeSource={Relat

<DataGridTemplateColumnHeader="Image"><DataGridTemplateColumn.CellTemplate><DataTemplate><ButtonCommand="{BindingDataContext.EnterCmd,RelativeSource={RelativeSourceFindAn

<DataGridTemplateColumnHeader="Select"><DataGridTemplateColumn.CellTemplate><DataTemplate><CheckBoxIsThreeState="False"><behavior:Interaction.Triggers>

<DataGridItemsSource="{BindingBooksList,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"SelectionMode="Extended"><DataGrid.ContextMenu><ContextMenu><MenuItemHeader="Ex

//xaml<behavior:Interaction.Triggers><behavior:EventTriggerEventName="MouseWheel"SourceObject="{BindingElementName=img}"><behavior:InvokeCommandActionCommand="{BindingMouseWheelCmd}"

 //xaml<Windowx:Class="WpfApp194.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas