diff --git a/chatclient/App.xaml b/chatclient/App.xaml
index 768ad24..eed1546 100644
--- a/chatclient/App.xaml
+++ b/chatclient/App.xaml
@@ -3,6 +3,7 @@
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
             xmlns:local="clr-namespace:chatclient"
+            xmlns:data="clr-namespace:chatclient.Data"
             StartupUri="MainWindow.xaml">
     <Application.Resources>
         <ResourceDictionary>
diff --git a/chatclient/Data/ChatDataModel.cs b/chatclient/Data/ChatDataModel.cs
index af99423..69dbf2c 100644
--- a/chatclient/Data/ChatDataModel.cs
+++ b/chatclient/Data/ChatDataModel.cs
@@ -1,13 +1,6 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows.Media;
+using System.Windows.Media;
 using System.Windows;
 using System.Windows.Media.Imaging;
-using System.Windows.Controls;
-using System.Windows.Input;
 using System.Globalization;
 using System.Windows.Data;
 
@@ -62,9 +55,6 @@ namespace chatclient.Data
         public string? UserName { get; set; }
         public string? UserPassword { get; set; }
     }
-    /// <summary>
-    /// 时间格式转换器类
-    /// </summary>
     public class TimeFormatConverter : IValueConverter
     {
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
@@ -81,7 +71,6 @@ namespace chatclient.Data
                 }
                 else if (timestamp.Kind == DateTimeKind.Unspecified)
                 {
-                    // 假设未指定时间是UTC时间（常见实践）
                     localTime = DateTime.SpecifyKind(timestamp, DateTimeKind.Utc).ToLocalTime();
                 }
                 else
@@ -127,7 +116,15 @@ namespace chatclient.Data
             }
             return value;
         }
-
+        /// <summary>
+        /// 将格式化的时间字符串转换回DateTime对象
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="targetType"></param>
+        /// <param name="parameter"></param>
+        /// <param name="culture"></param>
+        /// <returns></returns>
+        /// <exception cref="NotImplementedException"></exception>
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
         {
             throw new NotImplementedException();
diff --git a/chatclient/MainWindow.xaml b/chatclient/MainWindow.xaml
index a81236f..144a7c0 100644
--- a/chatclient/MainWindow.xaml
+++ b/chatclient/MainWindow.xaml
@@ -10,6 +10,9 @@
         mc:Ignorable="d"
         Title="ChatWindow" Height="450" Width="800" MinHeight="240" MinWidth="380"
         Style="{StaticResource MaterialDesignWindow}" Closed="MainWindow_Closed" Loaded="MainWindow_Loaded">
+    <Window.Resources>
+        <data:TimeFormatConverter x:Key="TimeConverter"/>
+    </Window.Resources>
     <Grid>
         <materialDesign:Card>
             <TabControl x:Name="TabControl" VerticalContentAlignment="Bottom" materialDesign:ColorZoneAssist.Mode="PrimaryMid" Style="{StaticResource MaterialDesignNavigationRailTabControl}">