chore: use nameof expression.

src/Shared/HandyControl_Shared/Controls/Base/AdornerElement.cs

@@ -11,7 +11,7 @@ public abstract class AdornerElement : Control, IDisposable
     protected FrameworkElement ElementTarget { get; set; }
 
     public static readonly DependencyProperty TargetProperty = DependencyProperty.Register(
-        "Target", typeof(FrameworkElement), typeof(AdornerElement), new PropertyMetadata(default(FrameworkElement), OnTargetChanged));
+        nameof(Target), typeof(FrameworkElement), typeof(AdornerElement), new PropertyMetadata(default(FrameworkElement), OnTargetChanged));
 
     private static void OnTargetChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
     {

src/Shared/HandyControl_Shared/Controls/Base/HeaderedSelectableItem.cs

@@ -5,7 +5,7 @@ namespace HandyControl.Controls;
 public class HeaderedSelectableItem : SelectableItem
 {
     public static readonly DependencyProperty HeaderProperty = DependencyProperty.Register(
-        "Header", typeof(object), typeof(HeaderedSelectableItem), new PropertyMetadata(default(object)));
+        nameof(Header), typeof(object), typeof(HeaderedSelectableItem), new PropertyMetadata(default(object)));
 
     public object Header
     {
@@ -14,7 +14,7 @@ public class HeaderedSelectableItem : SelectableItem
     }
 
     public static readonly DependencyProperty HeaderTemplateProperty = DependencyProperty.Register(
-        "HeaderTemplate", typeof(DataTemplate), typeof(HeaderedSelectableItem), new PropertyMetadata(default(DataTemplate)));
+        nameof(HeaderTemplate), typeof(DataTemplate), typeof(HeaderedSelectableItem), new PropertyMetadata(default(DataTemplate)));
 
     public DataTemplate HeaderTemplate
     {

src/Shared/HandyControl_Shared/Controls/Base/HeaderedSimpleItemsControl.cs

@@ -5,7 +5,7 @@ namespace HandyControl.Controls;
 public class HeaderedSimpleItemsControl : SimpleItemsControl
 {
     public static readonly DependencyProperty HeaderProperty = DependencyProperty.Register(
-        "Header", typeof(object), typeof(HeaderedSimpleItemsControl), new PropertyMetadata(default(object)));
+        nameof(Header), typeof(object), typeof(HeaderedSimpleItemsControl), new PropertyMetadata(default(object)));
 
     public object Header
     {

src/Shared/HandyControl_Shared/Controls/Base/RegularItemsControl.cs

@@ -12,7 +12,7 @@ namespace HandyControl.Controls;
 public class RegularItemsControl : SimpleItemsControl
 {
     public static readonly DependencyProperty ItemWidthProperty = DependencyProperty.Register(
-        "ItemWidth", typeof(double), typeof(RegularItemsControl), new PropertyMetadata(ValueBoxes.Double200Box));
+        nameof(ItemWidth), typeof(double), typeof(RegularItemsControl), new PropertyMetadata(ValueBoxes.Double200Box));
 
     public double ItemWidth
     {
@@ -21,7 +21,7 @@ public class RegularItemsControl : SimpleItemsControl
     }
 
     public static readonly DependencyProperty ItemHeightProperty = DependencyProperty.Register(
-        "ItemHeight", typeof(double), typeof(RegularItemsControl), new PropertyMetadata(ValueBoxes.Double200Box));
+        nameof(ItemHeight), typeof(double), typeof(RegularItemsControl), new PropertyMetadata(ValueBoxes.Double200Box));
 
     public double ItemHeight
     {
@@ -30,7 +30,7 @@ public class RegularItemsControl : SimpleItemsControl
     }
 
     public static readonly DependencyProperty ItemMarginProperty = DependencyProperty.Register(
-        "ItemMargin", typeof(Thickness), typeof(RegularItemsControl), new PropertyMetadata(default(Thickness)));
+        nameof(ItemMargin), typeof(Thickness), typeof(RegularItemsControl), new PropertyMetadata(default(Thickness)));
 
     public Thickness ItemMargin
     {

src/Shared/HandyControl_Shared/Controls/Base/SelectableItem.cs

@@ -62,7 +62,7 @@ public class SelectableItem : ContentControl, ISelectable
     protected virtual void OnSelected(RoutedEventArgs e) => RaiseEvent(e);
 
     public static readonly DependencyProperty IsSelectedProperty = DependencyProperty.Register(
-        "IsSelected", typeof(bool), typeof(SelectableItem), new PropertyMetadata(ValueBoxes.FalseBox));
+        nameof(IsSelected), typeof(bool), typeof(SelectableItem), new PropertyMetadata(ValueBoxes.FalseBox));
 
     public bool IsSelected
     {
@@ -71,7 +71,7 @@ public class SelectableItem : ContentControl, ISelectable
     }
 
     public static readonly DependencyProperty SelfManageProperty = DependencyProperty.Register(
-        "SelfManage", typeof(bool), typeof(SelectableItem), new PropertyMetadata(ValueBoxes.FalseBox));
+        nameof(SelfManage), typeof(bool), typeof(SelectableItem), new PropertyMetadata(ValueBoxes.FalseBox));
 
     public bool SelfManage
     {
@@ -80,7 +80,7 @@ public class SelectableItem : ContentControl, ISelectable
     }
 
     public static readonly DependencyProperty CanDeselectProperty = DependencyProperty.Register(
-        "CanDeselect", typeof(bool), typeof(SelectableItem), new PropertyMetadata(ValueBoxes.FalseBox));
+        nameof(CanDeselect), typeof(bool), typeof(SelectableItem), new PropertyMetadata(ValueBoxes.FalseBox));
 
     public bool CanDeselect
     {

src/Shared/HandyControl_Shared/Controls/Base/SimpleItemsControl.cs

@@ -20,15 +20,15 @@ public class SimpleItemsControl : Control
     private const string ElementPanel = "PART_Panel";
 
     public static readonly DependencyProperty ItemTemplateProperty = DependencyProperty.Register(
-        "ItemTemplate", typeof(DataTemplate), typeof(SimpleItemsControl),
+        nameof(ItemTemplate), typeof(DataTemplate), typeof(SimpleItemsControl),
         new FrameworkPropertyMetadata(default(DataTemplate), OnItemTemplateChanged));
 
     public static readonly DependencyProperty ItemContainerStyleProperty = DependencyProperty.Register(
-        "ItemContainerStyle", typeof(Style), typeof(SimpleItemsControl),
+        nameof(ItemContainerStyle), typeof(Style), typeof(SimpleItemsControl),
         new PropertyMetadata(default(Style), OnItemContainerStyleChanged));
 
     public static readonly DependencyProperty ItemsSourceProperty = DependencyProperty.Register(
-        "ItemsSource", typeof(IEnumerable), typeof(SimpleItemsControl),
+        nameof(ItemsSource), typeof(IEnumerable), typeof(SimpleItemsControl),
         new PropertyMetadata(default(IEnumerable), OnItemsSourceChanged));
 
     public SimpleItemsControl()