diff --git a/src/Shared/HandyControl_Shared/Controls/Window/MessageBox.cs b/src/Shared/HandyControl_Shared/Controls/Window/MessageBox.cs
index 4d688cd8..f5d6a43e 100644
--- a/src/Shared/HandyControl_Shared/Controls/Window/MessageBox.cs
+++ b/src/Shared/HandyControl_Shared/Controls/Window/MessageBox.cs
@@ -1,5 +1,6 @@
 using System;
 using System.ComponentModel;
+using System.Diagnostics.CodeAnalysis;
 using System.Media;
 using System.Text;
 using System.Windows;
@@ -14,6 +15,7 @@ namespace HandyControl.Controls
     /// <summary>
     ///     消息框
     /// </summary>
+    [SuppressMessage("ReSharper", "RedundantDelegateCreation")]
     public sealed class MessageBox : Window
     {
         private MessageBoxResult _messageBoxResult = MessageBoxResult.Cancel;
@@ -31,7 +33,7 @@ namespace HandyControl.Controls
 
         public string Message
         {
-            get => (string) GetValue(MessageProperty);
+            get => (string)GetValue(MessageProperty);
             set => SetValue(MessageProperty, value);
         }
 
@@ -40,7 +42,7 @@ namespace HandyControl.Controls
 
         public Geometry Image
         {
-            get => (Geometry) GetValue(ImageProperty);
+            get => (Geometry)GetValue(ImageProperty);
             set => SetValue(ImageProperty, value);
         }
 
@@ -49,7 +51,7 @@ namespace HandyControl.Controls
 
         public Brush ImageBrush
         {
-            get => (Brush) GetValue(ImageBrushProperty);
+            get => (Brush)GetValue(ImageBrushProperty);
             set => SetValue(ImageBrushProperty, value);
         }
 
@@ -58,7 +60,7 @@ namespace HandyControl.Controls
 
         public bool ShowImage
         {
-            get => (bool) GetValue(ShowImageProperty);
+            get => (bool)GetValue(ShowImageProperty);
             set => SetValue(ShowImageProperty, value);
         }
 
@@ -139,18 +141,7 @@ namespace HandyControl.Controls
         public static MessageBoxResult Success(string messageBoxText, string caption = null)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
-            {
-                messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.None, MessageBoxResult.OK);
-                SetButtonStatus(messageBox, MessageBoxButton.OK);
-                messageBox.ShowImage = true;
-                messageBox.Image = ResourceHelper.GetResource<Geometry>(ResourceToken.SuccessGeometry);
-                messageBox.ImageBrush = ResourceHelper.GetResource<Brush>(ResourceToken.SuccessBrush);
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
             {
                 messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.None, MessageBoxResult.OK);
                 SetButtonStatus(messageBox, MessageBoxButton.OK);
@@ -159,8 +150,7 @@ namespace HandyControl.Controls
                 messageBox.ImageBrush = ResourceHelper.GetResource<Brush>(ResourceToken.SuccessBrush);
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -173,24 +163,14 @@ namespace HandyControl.Controls
         public static MessageBoxResult Info(string messageBoxText, string caption = null)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
-            {
-                messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.Information, MessageBoxResult.OK);
-                SetButtonStatus(messageBox, MessageBoxButton.OK);
-                SetImage(messageBox, MessageBoxImage.Information);
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
             {
                 messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.Information, MessageBoxResult.OK);
                 SetButtonStatus(messageBox, MessageBoxButton.OK);
                 SetImage(messageBox, MessageBoxImage.Information);
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -203,24 +183,14 @@ namespace HandyControl.Controls
         public static MessageBoxResult Warning(string messageBoxText, string caption = null)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
-            {
-                messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.Warning, MessageBoxResult.OK);
-                SetButtonStatus(messageBox, MessageBoxButton.OK);
-                SetImage(messageBox, MessageBoxImage.Warning);
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
             {
                 messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.Warning, MessageBoxResult.OK);
                 SetButtonStatus(messageBox, MessageBoxButton.OK);
                 SetImage(messageBox, MessageBoxImage.Warning);
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -233,24 +203,14 @@ namespace HandyControl.Controls
         public static MessageBoxResult Error(string messageBoxText, string caption = null)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
-            {
-                messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.Error, MessageBoxResult.OK);
-                SetButtonStatus(messageBox, MessageBoxButton.OK);
-                SetImage(messageBox, MessageBoxImage.Error);
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
             {
                 messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.Error, MessageBoxResult.OK);
                 SetButtonStatus(messageBox, MessageBoxButton.OK);
                 SetImage(messageBox, MessageBoxImage.Error);
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -263,18 +223,7 @@ namespace HandyControl.Controls
         public static MessageBoxResult Fatal(string messageBoxText, string caption = null)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
-            {
-                messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.None, MessageBoxResult.OK);
-                SetButtonStatus(messageBox, MessageBoxButton.OK);
-                messageBox.ShowImage = true;
-                messageBox.Image = ResourceHelper.GetResource<Geometry>(ResourceToken.FatalGeometry);
-                messageBox.ImageBrush = ResourceHelper.GetResource<Brush>(ResourceToken.PrimaryTextBrush);
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
             {
                 messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OK, MessageBoxImage.None, MessageBoxResult.OK);
                 SetButtonStatus(messageBox, MessageBoxButton.OK);
@@ -283,8 +232,7 @@ namespace HandyControl.Controls
                 messageBox.ImageBrush = ResourceHelper.GetResource<Brush>(ResourceToken.PrimaryTextBrush);
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -297,24 +245,14 @@ namespace HandyControl.Controls
         public static MessageBoxResult Ask(string messageBoxText, string caption = null)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
-            {
-                messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OKCancel, MessageBoxImage.Question, MessageBoxResult.Cancel);
-                SetButtonStatus(messageBox, MessageBoxButton.OKCancel);
-                SetImage(messageBox, MessageBoxImage.Question);
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
             {
                 messageBox = CreateMessageBox(null, messageBoxText, caption, MessageBoxButton.OKCancel, MessageBoxImage.Question, MessageBoxResult.Cancel);
                 SetButtonStatus(messageBox, MessageBoxButton.OKCancel);
                 SetImage(messageBox, MessageBoxImage.Question);
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -327,7 +265,6 @@ namespace HandyControl.Controls
         public static MessageBoxResult Show(MessageBoxInfo info)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
             {
                 messageBox = CreateMessageBox(null, info.MessageBoxText, info.Caption, info.Button, MessageBoxImage.None, info.DefaultResult);
@@ -340,33 +277,13 @@ namespace HandyControl.Controls
                     messageBox.ImageBrush = ResourceHelper.GetResource<Brush>(info.IconBrushKey);
                 }
 
-                if (info.Style != null) 
-                {
-                    messageBox.Style = info.Style;
-                }
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
-            {
-                messageBox = CreateMessageBox(null, info.MessageBoxText, info.Caption, info.Button, MessageBoxImage.None, info.DefaultResult);
-                SetButtonStatus(messageBox, info.Button);
-
-                if (!string.IsNullOrEmpty(info.IconKey))
-                {
-                    messageBox.ShowImage = true;
-                    messageBox.Image = ResourceHelper.GetResource<Geometry>(info.IconKey);
-                    messageBox.ImageBrush = ResourceHelper.GetResource<Brush>(info.IconBrushKey);
-                }
-
                 if (info.Style != null)
                 {
                     messageBox.Style = info.Style;
                 }
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -398,24 +315,14 @@ namespace HandyControl.Controls
         public static MessageBoxResult Show(System.Windows.Window owner, string messageBoxText, string caption = null, MessageBoxButton button = MessageBoxButton.OK, MessageBoxImage icon = MessageBoxImage.None, MessageBoxResult defaultResult = MessageBoxResult.None)
         {
             MessageBox messageBox = null;
-#if netle40
             Application.Current.Dispatcher.Invoke(new Action(() =>
-            {
-                messageBox = CreateMessageBox(owner, messageBoxText, caption, button, icon, defaultResult);
-                SetButtonStatus(messageBox, button);
-                SetImage(messageBox, icon);
-                messageBox.ShowDialog();
-            }));
-#else
-            Application.Current.Dispatcher.Invoke(() =>
             {
                 messageBox = CreateMessageBox(owner, messageBoxText, caption, button, icon, defaultResult);
                 SetButtonStatus(messageBox, button);
                 SetImage(messageBox, icon);
                 SystemSounds.Asterisk.Play();
                 messageBox.ShowDialog();
-            });
-#endif
+            }));
 
             return messageBox._messageBoxResult;
         }
@@ -540,4 +447,4 @@ namespace HandyControl.Controls
                    || value == MessageBoxResult.Yes;
         }
     }
-}
+}
\ No newline at end of file