Space Purr

<DockPanel>
     <Label Content="Фамилия:"/>
     <TextBox Width="300" />
</DockPanel>

<Button x:Name="MyButton" Command="{Binding ClickCommand}" 
CommandParameter="{Binding ElementName=MyButton}"/>

public class MainViewModel : BaseViewModel
{
    public Command ClickCommand { get; set; }

    public MainViewModel()
    {
        ClickCommand = new Command(ClickCommandExecute);
    }

    private void ClickCommandExecute(object obj)
    {
        Button button = obj as Button;
        MessageBox.Show(button.ActualHeight.ToString() + " : " + button.ActualWidth);
    }
}

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei ="http://schemas.microsoft.com/expression/2010/interactions"

<i:Interaction.Triggers>
    <i:EventTrigger EventName="GotFocus">
        <ei:CallMethodAction MethodName="NoteList_GotFocus"
                             TargetObject="{Binding }"/>
    </i:EventTrigger>
</i:Interaction.Triggers>

public void NoteList_GotFocus(object sender, RoutedEventArgs e)
{
    if (e.OriginalSource is ListBoxItem lvi)
    {
        Note note = lvi.DataContext as Note;
        MessageBox.Show(note.Title);
    }
}

if(CurrentContentVM is WatchNoteVM wnVM && wnVM.WatchNote == deleteNote)

public partial class MainWindow : Window
    {
        Animation animation;

        bool isOptionsOpen1 = false;
        bool isOptionsOpen2 = false;

        public MainWindow()
        {
            InitializeComponent();
            HotKeys hk = new HotKeys(this);
            animation = new Animation(this);
        }               

        private void OpenOptions(object sender, RoutedEventArgs e)
        {             
           animation.OpenOptions();
        }

        private void HideOptions(object sender, RoutedEventArgs e)
        {           
           animation.HideOptions();
        }
    }

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Opacity="0.5" AllowsTransparency="True" 
        WindowStyle="None">

<Window.Resources>
    <Style TargetType="RadioButton" BasedOn="{StaticResource {x:Type ToggleButton}}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate>
                    <ToggleButton IsChecked="{Binding IsChecked, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
                        Content="{Binding Content, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>

    <RadioButton Grid.Column="0" Width="50" Height="50" />
    <RadioButton Grid.Column="1" Width="50" Height="50" />
    <RadioButton Grid.Column="2" Width="50" Height="50" />
</Grid>

<RadioButton GroupName="Group1"/>
<RadioButton GroupName="Group1"/>
<RadioButton GroupName="Group1"/>

<RadioButton GroupName="Group2"/>
<RadioButton GroupName="Group2"/>
<RadioButton GroupName="Group2"/>

class HotKeys
{
     private MainWindow window;
     //Конструктор
     public HotKeys(MainWIndow _window)
     {
          window = _window;
     }
}

namespace Toolkits
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
       
        public MainWindow()
        {
            InitializeComponent();
            HotKeys hk = new HotKeys(this);           
        }
    }
}

<Window.Resources>
    <ContextMenu x:Key="MyContextMenu">
        <!--Ваше меню -->
    </ContextMenu>
</Window.Resources>

<Grid>
     <!-- колонки строки -->
    <TextBox Tag="1" Grid.Column="1" Grid.Row="5" ContextMenu="{StaticResource MyContextMenu}"/>        
    <TextBox Tag="2" Grid.Column="2" Grid.Row="5" ContextMenu="{StaticResource MyContextMenu}"/>                   
</Grid>

• Создаем колонку, содержимое в ячейках которой будет представлять Button с событием Button_Click.
  

  <DataGrid Name="MyDataGrid" ItemsSource="{Binding Table}">
      <DataGrid.Columns>
          <DataGridTemplateColumn>
              <DataGridTemplateColumn.CellTemplate>
                  <DataTemplate>
                      <Button Click="Button_Click">Open Form</Button>
                  </DataTemplate>
              </DataGridTemplateColumn.CellTemplate>
          </DataGridTemplateColumn>
      </DataGrid.Columns>
  </DataGrid>

  
  
• Пусть имеется некая форма TosterForm, конструктор которой принимает один строковый аргумент - значение в 3 колонке выделенной строки.
  

  private void Button_Click(object sender, RoutedEventArgs e)
  {
      TosterForm form = new TosterForm(((DataRowView)MyDataGrid.SelectedItem).Row.ItemArray[3].ToString());
      form.ShowDialog();
  }

  
  По поводу получения значения в ячейке может есть и другой вариант, я до этого практически не работал с DataGrid.