feature<*>: upgrade to .NET 5.0; use System.Text.Json instead of System.Xml; supports auto check update at startup

.gitignore

@@ -2,3 +2,4 @@
 .vs
 bin
 obj
+publish

build.bat

@@ -0,0 +1,8 @@
+@echo off
+
+cd src
+
+dotnet publish -c Release -r win-x64 -o ..\publish\selfcontained\ -p:PublishSingleFile=true -p:PublishTrimmed=true -p:TrimMode=link --self-contained=true
+dotnet publish -c Release -r win-x64 -o ..\publish\no-selfcontained\ -p:PublishSingleFile=true --self-contained=false
+
+pause

src/App.xaml.cs

@@ -76,7 +76,7 @@ namespace SourceGit {
             }
 
             // Apply themes
-            if (Preference.UIUseLightTheme) {
+            if (Preference.UseLightTheme) {
                 foreach (var rs in Current.Resources.MergedDictionaries) {
                     if (rs.Source != null && rs.Source.OriginalString.StartsWith("pack://application:,,,/Resources/Themes/")) {
                         rs.Source = new Uri("pack://application:,,,/Resources/Themes/Light.xaml", UriKind.Absolute);

src/Converters/FileStatusToColor.cs

@@ -27,7 +27,7 @@ namespace SourceGit.Converters {
                 status = change.Index;
             }
 
-            if (App.Preference.UIUseLightTheme) {
+            if (App.Preference.UseLightTheme) {
                 switch (status) {
                 case Git.Change.Status.Modified: return Brushes.Goldenrod;
                 case Git.Change.Status.Added: return Brushes.Green;

src/Git/Preference.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Xml.Serialization;
+using System.Text.Json;
 
 namespace SourceGit.Git {
 
@@ -48,7 +48,7 @@ namespace SourceGit.Git {
         private static readonly string SAVE_PATH = Path.Combine(
             Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
             "SourceGit",
-            "preference.xml");
+            "preference.json");
         /// <summary>
         ///     Runtime singleton instance.
         /// </summary>
@@ -64,6 +64,17 @@ namespace SourceGit.Git {
         }
         #endregion
 
+        #region SETTING_GENERAL
+        /// <summary>
+        ///     Use light color theme.
+        /// </summary>
+        public bool UseLightTheme { get; set; }
+        /// <summary>
+        ///     Check for updates.
+        /// </summary>
+        public bool CheckUpdate { get; set; }
+        #endregion
+
         #region SETTING_GIT
         /// <summary>
         ///     Git executable file path.
@@ -96,10 +107,6 @@ namespace SourceGit.Git {
         /// </summary>
         public double UIMainWindowHeight { get; set; }
         /// <summary>
-        ///     Use light color theme.
-        /// </summary>
-        public bool UIUseLightTheme { get; set; }
-        /// <summary>
         ///     Show/Hide tags' list view.
         /// </summary>
         public bool UIShowTags { get; set; } = true;
@@ -144,16 +151,8 @@ namespace SourceGit.Git {
         public static void Load() {
             if (!File.Exists(SAVE_PATH)) {
                 instance = new Preference();
-                return;
+            } else {
-            }
+                instance = JsonSerializer.Deserialize<Preference>(File.ReadAllText(SAVE_PATH));
-
-            try {
-                var stream = new FileStream(SAVE_PATH, FileMode.Open);
-                var reader = new XmlSerializer(typeof(Preference));
-                instance = (Preference)reader.Deserialize(stream);
-                stream.Close();
-            } catch {
-                instance = new Preference();
             }
         }
 
@@ -166,11 +165,8 @@ namespace SourceGit.Git {
             var dir = Path.GetDirectoryName(SAVE_PATH);
             if (!Directory.Exists(dir)) Directory.CreateDirectory(dir);
 
-            var stream = new FileStream(SAVE_PATH, FileMode.Create);
+            var data = JsonSerializer.Serialize(instance, new JsonSerializerOptions() { WriteIndented = true });
-            var writer = new XmlSerializer(typeof(Preference));
+            File.WriteAllText(SAVE_PATH, data);
-            writer.Serialize(stream, instance);
-            stream.Flush();
-            stream.Close();
         }
         #endregion
 

src/Git/Repository.cs

@@ -3,9 +3,9 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Text;
+using System.Text.Json.Serialization;
 using System.Text.RegularExpressions;
 using System.Windows.Threading;
-using System.Xml.Serialization;
 
 namespace SourceGit.Git {
 
@@ -15,14 +15,14 @@ namespace SourceGit.Git {
     public class Repository {
 
         #region HOOKS
-        [XmlIgnore] public Action<string> OnNavigateCommit = null;
+        public Action<string> OnNavigateCommit = null;
-        [XmlIgnore] public Action OnWorkingCopyChanged = null;
+        public Action OnWorkingCopyChanged = null;
-        [XmlIgnore] public Action OnTagChanged = null;
+        public Action OnTagChanged = null;
-        [XmlIgnore] public Action OnStashChanged = null;
+        public Action OnStashChanged = null;
-        [XmlIgnore] public Action OnBranchChanged = null;
+        public Action OnBranchChanged = null;
-        [XmlIgnore] public Action OnCommitsChanged = null;
+        public Action OnCommitsChanged = null;
-        [XmlIgnore] public Action OnSubmoduleChanged = null;
+        public Action OnSubmoduleChanged = null;
-        [XmlIgnore] public Action OnClosing = null;
+        public Action OnClosing = null;
         #endregion
 
         #region PROPERTIES_SAVED
@@ -57,8 +57,8 @@ namespace SourceGit.Git {
         #endregion
 
         #region PROPERTIES_RUNTIME
-        [XmlIgnore] public Repository Parent = null;
+        [JsonIgnore] public Repository Parent = null;
-        [XmlIgnore] public string GitDir = null;
+        [JsonIgnore] public string GitDir = null;
 
         private List<Remote> cachedRemotes = new List<Remote>();
         private List<Branch> cachedBranches = new List<Branch>();

src/Git/Version.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace SourceGit.Git {
+
+    /// <summary>
+    ///     Version information.
+    /// </summary>
+    public class Version {
+        [JsonPropertyName("id")]
+        public ulong Id { get; set; }
+        [JsonPropertyName("tag_name")]
+        public string TagName { get; set; }
+        [JsonPropertyName("target_commitish")]
+        public string CommitSHA { get; set; }
+        [JsonPropertyName("prerelease")]
+        public bool PreRelease { get; set; }
+        [JsonPropertyName("name")]
+        public string Name { get; set; }
+        [JsonPropertyName("body")]
+        public string Body { get; set; }
+        [JsonPropertyName("created_at")]
+        public DateTime CreatedAt { get; set; }
+    }
+}

src/SourceGit.csproj

@@ -1,6 +1,6 @@
-<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>net46</TargetFramework>
+        <TargetFramework>net5.0-windows</TargetFramework>
         <OutputType>WinExe</OutputType>
         <UseWPF>true</UseWPF>
         <ApplicationIcon>App.ico</ApplicationIcon>
@@ -16,4 +16,10 @@
         <RepositoryType>Public</RepositoryType>
         <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     </PropertyGroup>
+
+    <ItemGroup>
+        <TrimmerRootAssembly Include="System.Runtime" />
+        <TrimmerRootAssembly Include="System.Diagnostics.Debug" />
+        <TrimmerRootAssembly Include="System.Runtime.Extensions" />
+    </ItemGroup>
 </Project>

src/UI/About.xaml

@@ -1,5 +1,4 @@
 <Window x:Class="SourceGit.UI.About"
-        x:Name="me"
         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"
@@ -67,7 +66,7 @@
                 </StackPanel>
 
                 <Label Grid.Row="1" Content="SourceGit - OPEN SOURCE GIT CLIENT" HorizontalContentAlignment="Center" VerticalContentAlignment="Bottom" FontSize="18" FontWeight="Bold"/>
-                <Label Grid.Row="2" Content="{Binding ElementName=me, Path=Version}" HorizontalContentAlignment="Center" FontSize="11"/>
+                <Label Grid.Row="2" x:Name="version" HorizontalContentAlignment="Center" FontSize="11"/>
 
                 <Label Grid.Row="3" HorizontalContentAlignment="Center" FontSize="11">
                     <Hyperlink RequestNavigate="OpenSource" NavigateUri="https://gitee.com/sourcegit/SourceGit.git">

src/UI/About.xaml.cs

@@ -10,21 +10,14 @@ namespace SourceGit.UI {
     /// </summary>
     public partial class About : Window {
 
-        /// <summary>
-        ///     Current app version
-        /// </summary>
-        public string Version {
-            get {
-                Assembly asm = Assembly.GetExecutingAssembly();
-                return "VERSION : " + asm.GetName().Version;
-            }
-        }
-
         /// <summary>
         ///     Constructor
         /// </summary>
         public About() {
             InitializeComponent();
+
+            var asm = Assembly.GetExecutingAssembly().GetName();
+            version.Content = $"VERSION : v{asm.Version.Major}.{asm.Version.Minor}";
         }
 
         /// <summary>
@@ -33,7 +26,7 @@ namespace SourceGit.UI {
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void OpenSource(object sender, RequestNavigateEventArgs e) {
-            Process.Start(new ProcessStartInfo(e.Uri.AbsoluteUri));
+            Process.Start(new ProcessStartInfo("cmd", $"/c start {e.Uri.AbsoluteUri}") { CreateNoWindow = true });
             e.Handled = true;
         }
 

src/UI/Blame.xaml.cs

@@ -93,7 +93,8 @@ namespace SourceGit.UI {
                         FlowDirection.LeftToRight,
                         new Typeface(blame.FontFamily, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
                         12.0,
-                        Brushes.Black);
+                        Brushes.Black,
+                        VisualTreeHelper.GetDpi(this).PixelsPerDip);
 
                     var lineNumberWidth = formatted.Width + 16;
                     var minWidth = area.ActualWidth - lineNumberWidth;

src/UI/DiffViewer.xaml.cs

@@ -473,7 +473,8 @@ namespace SourceGit.UI {
                 FlowDirection.LeftToRight,
                 new Typeface(FontFamily, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
                 12.0,
-                Brushes.Black);
+                Brushes.Black,
+                VisualTreeHelper.GetDpi(this).PixelsPerDip);
 
             return formatted.Width + 16;
         }

src/UI/InteractiveRebase.xaml.cs

@@ -42,8 +42,8 @@ namespace SourceGit.UI {
         public static List<InteractiveRebaseModeInfo> Supported = new List<InteractiveRebaseModeInfo>() {
             new InteractiveRebaseModeInfo(InteractiveRebaseMode.Pick, "Pick", "Use this commit", Brushes.Green),
             new InteractiveRebaseModeInfo(InteractiveRebaseMode.Reword, "Reword", "Edit the commit message", Brushes.Yellow),
-            new InteractiveRebaseModeInfo(InteractiveRebaseMode.Squash, "Squash", "Meld into previous commit", App.Preference.UIUseLightTheme ? Brushes.Gray : Brushes.White),
+            new InteractiveRebaseModeInfo(InteractiveRebaseMode.Squash, "Squash", "Meld into previous commit", App.Preference.UseLightTheme ? Brushes.Gray : Brushes.White),
-            new InteractiveRebaseModeInfo(InteractiveRebaseMode.Fixup, "Fixup", "Like 'Squash' but discard log message", App.Preference.UIUseLightTheme ? Brushes.Gray : Brushes.White),
+            new InteractiveRebaseModeInfo(InteractiveRebaseMode.Fixup, "Fixup", "Like 'Squash' but discard log message", App.Preference.UseLightTheme ? Brushes.Gray : Brushes.White),
             new InteractiveRebaseModeInfo(InteractiveRebaseMode.Drop, "Drop", "Remove commit", Brushes.Red),
         };
     }

src/UI/Launcher.xaml

@@ -10,7 +10,7 @@
         Title="Source Git"
         Width="{Binding Source={x:Static source:App.Preference}, Path=UIMainWindowWidth, Mode=TwoWay}"
         Height="{Binding Source={x:Static source:App.Preference}, Path=UIMainWindowHeight, Mode=TwoWay}"
-        WindowStartupLocation="CenterScreen">
+        WindowStartupLocation="CenterOwner">
 
     <!-- Enable WindowChrome Feature -->
     <WindowChrome.WindowChrome>

src/UI/Launcher.xaml.cs

@@ -1,4 +1,10 @@
+using System;
 using System.Collections.ObjectModel;
+using System.Net;
+using System.Reflection;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
@@ -45,6 +51,8 @@ namespace SourceGit.UI {
 
             InitializeComponent();
             openedTabs.SelectedItem = Tabs[0];
+
+            if (App.Preference.CheckUpdate) Task.Run(CheckUpdate);
         }
 
         /// <summary>
@@ -76,6 +84,33 @@ namespace SourceGit.UI {
             openedTabs.SelectedItem = tab;
         }
 
+        /// <summary>
+        ///     Checking for update.
+        /// </summary>
+        public void CheckUpdate() {
+            try {
+                var web = new WebClient();
+                var raw = web.DownloadString("https://gitee.com/api/v5/repos/sourcegit/SourceGit/releases/latest");
+                var ver = JsonSerializer.Deserialize<Git.Version>(raw);
+                var cur = Assembly.GetExecutingAssembly().GetName().Version;
+
+                var matches = Regex.Match(ver.TagName, @"^v(\d+)\.(\d+).*");
+                if (!matches.Success) return;
+
+                var major = int.Parse(matches.Groups[1].Value);
+                var minor = int.Parse(matches.Groups[2].Value);
+                if (major > cur.Major || (major == cur.Major && minor > cur.Minor)) {
+                    Dispatcher.Invoke(() => {
+                        var dialog = new UpdateAvailable(ver);
+                        dialog.Owner = this;
+                        dialog.Show();
+                    });
+                }
+            } catch {
+                // IGNORE
+            }
+        }
+
         #region LAYOUT_CONTENT
         /// <summary>
         ///     Context menu for tab items.

src/UI/Preference.xaml

@@ -8,7 +8,7 @@
         xmlns:app="clr-namespace:SourceGit"
         xmlns:git="clr-namespace:SourceGit.Git"
         mc:Ignorable="d"
-        Height="520" Width="500"
+        Height="548" Width="500"
         Title="Preference"
         WindowStartupLocation="CenterOwner" ResizeMode="NoResize">
 
@@ -61,6 +61,7 @@
                 <Grid.RowDefinitions>
                     <RowDefinition Height="36"/>
                     <RowDefinition Height="28"/>
+                    <RowDefinition Height="28"/>
                     <RowDefinition Height="18"/>
                     <RowDefinition Height="36"/>
                     <RowDefinition Height="28"/>
@@ -78,24 +79,30 @@
                 </Grid.RowDefinitions>
 
                 <Grid.ColumnDefinitions>
-                    <ColumnDefinition Width="120"/>
+                    <ColumnDefinition Width="136"/>
-                    <ColumnDefinition MinWidth="200" Width="*"/>
+                    <ColumnDefinition Width="*"/>
                 </Grid.ColumnDefinitions>
 
-                <!-- 显示 -->
+                <!-- 通用 -->
-                <Label Grid.Row="0" Grid.ColumnSpan="2" Content="APPEARANCE" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
+                <Label Grid.Row="0" Grid.ColumnSpan="2" Content="GENERAL SETTING" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
                 <Label Grid.Row="1" Grid.Column="0" Content="Light Theme :" HorizontalAlignment="Right"/>
                 <CheckBox 
                     Grid.Row="1" 
                     Grid.Column="1" 
-                    IsChecked="{Binding Source={x:Static app:App.Preference}, Path=UIUseLightTheme, Mode=TwoWay}"
+                    IsChecked="{Binding Source={x:Static app:App.Preference}, Path=UseLightTheme, Mode=TwoWay}"
                     Content="Restart required"
                     TextElement.FontStyle="Italic"/>
+                <Label Grid.Row="2" Grid.Column="0" Content="Check for Update :" HorizontalAlignment="Right"/>
+                <CheckBox 
+                    Grid.Row="2" 
+                    Grid.Column="1" 
+                    IsChecked="{Binding Source={x:Static app:App.Preference}, Path=CheckUpdate, Mode=TwoWay}"
+                    TextElement.FontStyle="Italic"/>
 
                 <!-- GIT相关配置 -->
-                <Label Grid.Row="3" Grid.ColumnSpan="2" Content="GIT INSTANCE" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
+                <Label Grid.Row="4" Grid.ColumnSpan="2" Content="GIT INSTANCE" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
-                <Label Grid.Row="4" Grid.Column="0" Content="Install Path :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="5" Grid.Column="0" Content="Install Path :" HorizontalAlignment="Right"/>
-                <Grid Grid.Row="4" Grid.Column="1">
+                <Grid Grid.Row="5" Grid.Column="1">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="*"/>
                         <ColumnDefinition Width="28"/>
@@ -110,8 +117,8 @@
                         <Path Width="14" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Folder}"/>
                     </Button>
                 </Grid>
-                <Label Grid.Row="5" Grid.Column="0" Content="Default Clone Dir :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="6" Grid.Column="0" Content="Default Clone Dir :" HorizontalAlignment="Right"/>
-                <Grid Grid.Row="5" Grid.Column="1">
+                <Grid Grid.Row="6" Grid.Column="1">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="*"/>
                         <ColumnDefinition Width="28"/>
@@ -128,13 +135,13 @@
                 </Grid>
 
                 <!-- Global User -->
-                <Label Grid.Row="7" Grid.ColumnSpan="2" Content="GLOBAL SETTING" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
+                <Label Grid.Row="8" Grid.ColumnSpan="2" Content="GLOBAL SETTING" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
-                <Label Grid.Row="8" Grid.Column="0" Content="Name :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="9" Grid.Column="0" Content="Name :" HorizontalAlignment="Right"/>
-                <TextBox Grid.Row="8" Grid.Column="1" Height="24" helpers:TextBoxHelper.Placeholder="Global git user name" Text="{Binding ElementName=me, Path=GlobalUser, Mode=TwoWay}"/>
+                <TextBox Grid.Row="9" Grid.Column="1" Height="24" helpers:TextBoxHelper.Placeholder="Global git user name" Text="{Binding ElementName=me, Path=GlobalUser, Mode=TwoWay}"/>
-                <Label Grid.Row="9" Grid.Column="0" Content="Email :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="10" Grid.Column="0" Content="Email :" HorizontalAlignment="Right"/>
-                <TextBox Grid.Row="9" Grid.Column="1" Height="24" helpers:TextBoxHelper.Placeholder="Global git user email" Text="{Binding ElementName=me, Path=GlobalUserEmail, Mode=TwoWay}"/>
+                <TextBox Grid.Row="10" Grid.Column="1" Height="24" helpers:TextBoxHelper.Placeholder="Global git user email" Text="{Binding ElementName=me, Path=GlobalUserEmail, Mode=TwoWay}"/>
-                <Label Grid.Row="10" Grid.Column="0" Content="Auto CRLF :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="11" Grid.Column="0" Content="Auto CRLF :" HorizontalAlignment="Right"/>
-                <ComboBox Grid.Row="10" Grid.Column="1"
+                <ComboBox Grid.Row="11" Grid.Column="1"
                       x:Name="cmbAutoCRLF"
                       Height="24"
                       HorizontalAlignment="Stretch"
@@ -151,9 +158,9 @@
                 </ComboBox>
 
                 <!-- 合并工具配置 -->
-                <Label Grid.Row="12" Grid.ColumnSpan="2" Content="MERGE TOOL" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
+                <Label Grid.Row="13" Grid.ColumnSpan="2" Content="MERGE TOOL" FontSize="16" FontWeight="DemiBold" Opacity=".85"/>
-                <Label Grid.Row="13" Grid.Column="0" Content="Merger :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="14" Grid.Column="0" Content="Merger :" HorizontalAlignment="Right"/>
-                <ComboBox Grid.Row="13" Grid.Column="1"
+                <ComboBox Grid.Row="14" Grid.Column="1"
                      Height="24"
                      Padding="2,0,0,0"
                      HorizontalContentAlignment="Left"
@@ -162,8 +169,8 @@
                      ItemsSource="{Binding Source={x:Static git:MergeTool.Supported}}"
                      DisplayMemberPath="Name"
                      SelectionChanged="ChangeMergeTool"/>
-                <Label Grid.Row="14" Grid.Column="0" Content="Install Path :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="15" Grid.Column="0" Content="Install Path :" HorizontalAlignment="Right"/>
-                <Grid Grid.Row="14" Grid.Column="1">
+                <Grid Grid.Row="15" Grid.Column="1">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="*"/>
                         <ColumnDefinition Width="28"/>
@@ -178,8 +185,8 @@
                         <Path Width="14" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Folder}"/>
                     </Button>
                 </Grid>
-                <Label Grid.Row="15" Grid.Column="0" Content="Command :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="16" Grid.Column="0" Content="Command :" HorizontalAlignment="Right"/>
-                <TextBlock Grid.Row="15" Grid.Column="1" 
+                <TextBlock Grid.Row="16" Grid.Column="1" 
                        x:Name="txtMergeParam"
                        VerticalAlignment="Center"
                        Foreground="{StaticResource Brush.FG2}"/>

src/UI/UpdateAvailable.xaml

@@ -0,0 +1,102 @@
+<Window x:Class="SourceGit.UI.UpdateAvailable"
+        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"
+        mc:Ignorable="d"
+        FontFamily="Consolas"
+        Height="400" Width="500">
+    <!-- Enable WindowChrome Feature -->
+    <WindowChrome.WindowChrome>
+        <WindowChrome UseAeroCaptionButtons="False" CornerRadius="0" CaptionHeight="32"/>
+    </WindowChrome.WindowChrome>
+
+    <!-- Window Layout -->
+    <Border Background="{StaticResource Brush.BG1}">
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="32"/>
+                <RowDefinition Height="*"/>
+            </Grid.RowDefinitions>
+
+            <!-- Titlebar -->
+            <Grid Grid.Row="0" Background="{StaticResource Brush.BG4}">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto"/>
+                    <ColumnDefinition Width="Auto"/>
+                    <ColumnDefinition Width="*"/>
+                    <ColumnDefinition Width="Auto"/>
+                </Grid.ColumnDefinitions>
+
+                <!-- LOGO -->
+                <Path Width="20" Height="20" Margin="6,-1,2,0" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Fetch}"/>
+
+                <!-- Title -->
+                <Label Grid.Column="1" Content="UPDATE AVAILABLE" FontWeight="Light"/>
+
+                <!-- Close Button -->
+                <Button Click="Quit" Width="32" Grid.Column="3" WindowChrome.IsHitTestVisibleInChrome="True">
+                    <Button.Style>
+                        <Style TargetType="{x:Type Button}" BasedOn="{StaticResource Style.Button.HighlightHover}">
+                            <Style.Triggers>
+                                <Trigger Property="IsMouseOver" Value="True">
+                                    <Setter Property="Background" Value="Red"/>
+                                </Trigger>
+                            </Style.Triggers>
+                        </Style>
+                    </Button.Style>
+
+                    <Path Width="10" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Close}"/>
+                </Button>
+            </Grid>
+
+            <Grid Grid.Row="1" Margin="8">
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="40"/>
+                    <RowDefinition Height="8"/>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="*"/>
+                    <RowDefinition Height="32"/>
+                </Grid.RowDefinitions>
+
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="140"/>
+                    <ColumnDefinition Width="*"/>
+                </Grid.ColumnDefinitions>
+
+                <StackPanel Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" Orientation="Horizontal" HorizontalAlignment="Center">
+                    <Path Width="20" Height="20" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Git}" Fill="#FFF05133"/>
+                    <Label x:Name="txtRelease" Content="Release 2.1 available!" FontSize="18" FontWeight="Bold"/>
+                </StackPanel>
+
+                <Label Grid.Row="2" Grid.Column="0" Content="Publish Time    :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="2" Grid.Column="1" x:Name="txtTime" Content="2020/11/30 00:00:00"/>
+
+                <Label Grid.Row="3" Grid.Column="0" Content="Base On Commit  :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="3" Grid.Column="1" x:Name="txtBasedOn" Content="724908ea"/>
+
+                <Label Grid.Row="4" Grid.Column="0" Content="Is Pre-release  :" HorizontalAlignment="Right"/>
+                <Label Grid.Row="4" Grid.Column="1" x:Name="txtPrerelease" Content="NO"/>
+
+                <Border Grid.Row="5" Grid.Column="0" Grid.ColumnSpan="2" Margin="6,6,6,0" BorderBrush="{StaticResource Brush.BG4}" BorderThickness="1">
+                    <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
+                        <TextBlock FontSize="10pt"
+                            FontFamily="Consolas"
+                            Padding="8"
+                            Opacity="0.8"
+                            Background="{StaticResource Brush.BG2}"
+                            Foreground="{StaticResource Brush.FG}"
+                            x:Name="txtChangeLog"/>
+                    </ScrollViewer>
+                </Border>
+
+                <StackPanel Grid.Row="6" Grid.Column="0" Grid.ColumnSpan="2" Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,8,0,0">
+                    <Button Width="80" Height="24" Style="{StaticResource Style.Button.AccentBordered}" Content="DOWNLOAD" Click="Download"/>
+                    <Button Width="80" Margin="8,0,0,0" Height="24" Style="{StaticResource Style.Button.Bordered}" Content="CANCEL" Click="Quit"/>
+                </StackPanel>
+            </Grid>
+        </Grid>
+    </Border>
+</Window>

src/UI/UpdateAvailable.xaml.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Diagnostics;
+using System.Windows;
+using System.Windows.Navigation;
+
+namespace SourceGit.UI {
+
+    /// <summary>
+    /// Interaction logic for UpdateAvailable.xaml
+    /// </summary>
+    public partial class UpdateAvailable : Window {
+        private string tag = null;
+
+        /// <summary>
+        ///     Constructor
+        /// </summary>
+        /// <param name="version"></param>
+        public UpdateAvailable(Git.Version version) {
+            InitializeComponent();
+
+            txtRelease.Content = $"{version.Name} is available!";
+            txtTime.Content = version.CreatedAt.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss");
+            txtBasedOn.Content = version.CommitSHA.Substring(0, 10);
+            txtPrerelease.Content = version.PreRelease ? "YES" : "NO";
+            txtChangeLog.Text = version.Body;
+            tag = version.TagName;
+        }
+
+        /// <summary>
+        ///     Open source code link
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void Download(object sender, RoutedEventArgs e) {
+            Process.Start(new ProcessStartInfo("cmd", $"/c start https://gitee.com/sourcegit/SourceGit/releases/{tag}") { CreateNoWindow = true });
+            e.Handled = true;
+        }
+
+        /// <summary>
+        ///     Close this dialog
+        /// </summary>
+        private void Quit(object sender, RoutedEventArgs e) {
+            Close();
+        }
+    }
+}