diff --git a/demo/Ursa.Demo/ViewModels/SplashViewModel.cs b/demo/Ursa.Demo/ViewModels/SplashViewModel.cs
index c8a7178..76d894c 100644
--- a/demo/Ursa.Demo/ViewModels/SplashViewModel.cs
+++ b/demo/Ursa.Demo/ViewModels/SplashViewModel.cs
@@ -24,14 +24,14 @@ public partial class SplashViewModel: ObservableObject, IDialogContext
         }
         else
         {
-            RequestClose?.Invoke(this, null);
+            RequestClose?.Invoke(this, true);
             return false;
         }
     }
     
     public void Close()
     {
-        RequestClose?.Invoke(this, null);
+        RequestClose?.Invoke(this, false);
     }
 
     public event EventHandler<object?>? RequestClose;
diff --git a/demo/Ursa.Demo/Views/MainSplashWindow.axaml.cs b/demo/Ursa.Demo/Views/MainSplashWindow.axaml.cs
index b5974ea..662a15e 100644
--- a/demo/Ursa.Demo/Views/MainSplashWindow.axaml.cs
+++ b/demo/Ursa.Demo/Views/MainSplashWindow.axaml.cs
@@ -14,7 +14,7 @@ public partial class MainSplashWindow : SplashWindow
         InitializeComponent();
     }
 
-    protected override async Task<Window> CreateNextWindow()
+    protected override async Task<Window?> CreateNextWindow()
     {
         return new MainWindow()
         {
diff --git a/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml b/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml
index b7868e2..1bd5f41 100644
--- a/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml
+++ b/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml
@@ -1,48 +1,54 @@
-<u:SplashWindow xmlns="https://github.com/avaloniaui"
-        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:u="https://irihi.tech/ursa"
-        xmlns:viewModels="clr-namespace:Ursa.Demo.ViewModels"
-        xmlns:iri="https://irihi.tech/shared"
-        mc:Ignorable="d" 
-        Width="400" Height="400"
-        CountDown="{x:Null}"
-        x:DataType="viewModels:SplashViewModel"
-        x:Class="Ursa.Demo.Views.MvvmSplashWindow"
-        Title="MvvmSplashWindow">
-        <Grid
+<u:SplashWindow
+    x:Class="Ursa.Demo.Views.MvvmSplashWindow"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:iri="https://irihi.tech/shared"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:u="https://irihi.tech/ursa"
+    xmlns:viewModels="clr-namespace:Ursa.Demo.ViewModels"
+    Title="MvvmSplashWindow"
+    Width="400"
+    Height="400"
+    x:DataType="viewModels:SplashViewModel"
+    CountDown="{x:Null}"
+    mc:Ignorable="d">
+    <Grid
+        HorizontalAlignment="Center"
+        VerticalAlignment="Center"
+        ColumnDefinitions="Auto, Auto"
+        RowDefinitions="Auto, Auto, Auto">
+        <iri:IrihiLogo
+            Grid.Row="0"
+            Grid.Column="0"
+            Width="64"
+            Margin="0,0,16,0"
+            Fill="{DynamicResource SemiGrey5}" />
+        <StackPanel Grid.Row="0" Grid.Column="1">
+            <TextBlock
+                Classes="H2"
+                Text="铱泓科技"
+                Theme="{DynamicResource TitleTextBlock}" />
+            <TextBlock FontWeight="Bold" Text="IRIHI Technology" />
+        </StackPanel>
+        <ProgressBar
+            Grid.Row="1"
+            Grid.ColumnSpan="2"
+            Margin="0,16,0,0"
+            Value="{Binding Progress}" />
+        <StackPanel
+            Grid.Row="2"
+            Grid.Column="0"
+            Grid.ColumnSpan="2">
+            <TextBlock
+                Margin="0,12,0,0"
                 HorizontalAlignment="Center"
-                VerticalAlignment="Center"
-                ColumnDefinitions="Auto, Auto"
-                RowDefinitions="Auto, Auto, Auto">
-                <iri:IrihiLogo
-                        Grid.Row="0"
-                        Grid.Column="0"
-                        Width="64"
-                        Margin="0,0,16,0"
-                        Fill="{DynamicResource SemiGrey5}" />
-                <StackPanel Grid.Row="0" Grid.Column="1">
-                        <TextBlock
-                                Classes="H2"
-                                Text="铱泓科技"
-                                Theme="{DynamicResource TitleTextBlock}" />
-                        <TextBlock FontWeight="Bold" Text="IRIHI Technology" />
-                </StackPanel>
-                <ProgressBar Grid.Row="1" Grid.ColumnSpan="2" Value="{Binding Progress}" Margin="0 16 0 0"/>
-                <StackPanel
-                        Grid.Row="2"
-                        Grid.Column="0"
-                        Grid.ColumnSpan="2">
-                        <TextBlock
-                                Margin="0,12,0,0"
-                                HorizontalAlignment="Center"
-                                FontSize="14"
-                                Text="聚焦生产力的美学进化" />
-                        <TextBlock
-                                HorizontalAlignment="Center"
-                                FontSize="14"
-                                Text="Aesthetic Evolution of Productivity" />
-                </StackPanel>
-        </Grid>
+                FontSize="14"
+                Text="聚焦生产力的美学进化" />
+            <TextBlock
+                HorizontalAlignment="Center"
+                FontSize="14"
+                Text="Aesthetic Evolution of Productivity" />
+        </StackPanel>
+    </Grid>
 </u:SplashWindow>
diff --git a/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml.cs b/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml.cs
index c25f646..a1bf93b 100644
--- a/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml.cs
+++ b/demo/Ursa.Demo/Views/MvvmSplashWindow.axaml.cs
@@ -14,11 +14,15 @@ public partial class MvvmSplashWindow : SplashWindow
         InitializeComponent();
     }
 
-    protected override async Task<Window> CreateNextWindow()
+    protected override async Task<Window?> CreateNextWindow()
     {
-        return new MainWindow()
+        if (this.DialogResult is true)
         {
-            DataContext = new MainViewViewModel()
-        };
+            return new MainWindow()
+            {
+                DataContext = new MainViewViewModel()
+            };
+        }
+        return null;
     }
 }
\ No newline at end of file
diff --git a/src/Ursa/Windows/SplashWindow.cs b/src/Ursa/Windows/SplashWindow.cs
index b82cc7d..ee8feb7 100644
--- a/src/Ursa/Windows/SplashWindow.cs
+++ b/src/Ursa/Windows/SplashWindow.cs
@@ -35,7 +35,8 @@ public abstract class SplashWindow: Window
     
     private void OnContextRequestClose(object? sender, object? args)
     {
-        Close(args);
+        DialogResult = args;
+        Close();
     }
 
     protected override void OnLoaded(RoutedEventArgs e)
@@ -46,9 +47,11 @@ public abstract class SplashWindow: Window
             DispatcherTimer.RunOnce(Close, CountDown.Value);
         }
     }
+    
+    protected object? DialogResult { get; private set; }
 
     protected virtual Task<bool> CanClose() => Task.FromResult(true);
-    protected abstract Task<Window> CreateNextWindow();
+    protected abstract Task<Window?> CreateNextWindow();
     
     private bool _canClose;
     
@@ -62,16 +65,17 @@ public abstract class SplashWindow: Window
             if (_canClose)
             {
                 var nextWindow = await CreateNextWindow();
-                if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime lifetime)
+                if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime lifetime && nextWindow is not null)
                 {
                     lifetime.MainWindow = nextWindow;
                 }
-                nextWindow.Show();
+                nextWindow?.Show();
                 Close();
                 if (DataContext is IDialogContext idc)
                 {
-                    idc.Close();
+                    // unregister in advance in case developer try to raise event again. 
                     idc.RequestClose -= OnContextRequestClose;
+                    idc.Close();
                 }
                 return;
             }