diff --git a/BBWY.Client/App.xaml.cs b/BBWY.Client/App.xaml.cs
index 80a08e61..0de8fb93 100644
--- a/BBWY.Client/App.xaml.cs
+++ b/BBWY.Client/App.xaml.cs
@@ -3,6 +3,7 @@ using BBWY.Client.ViewModels;
 using BBWY.Common.Extensions;
 using BBWY.Common.Http;
 using BBWY.Common.Models;
+using BBWY.Common.Trigger;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using System;
diff --git a/BBWY.Client/BBWY.Client.csproj b/BBWY.Client/BBWY.Client.csproj
index da12e8d8..a225e56d 100644
--- a/BBWY.Client/BBWY.Client.csproj
+++ b/BBWY.Client/BBWY.Client.csproj
@@ -1,7 +1,7 @@
     <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
 
   <PropertyGroup>
-    <OutputType>WinExe</OutputType>
+    <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <UseWPF>true</UseWPF>
     <ApplicationIcon>Resources\Images\bbwylogo.ico</ApplicationIcon>
diff --git a/BBWY.Client/Models/Product/PurchaseSchemeProductSku.cs b/BBWY.Client/Models/Product/PurchaseSchemeProductSku.cs
index 998d5079..20f5c206 100644
--- a/BBWY.Client/Models/Product/PurchaseSchemeProductSku.cs
+++ b/BBWY.Client/Models/Product/PurchaseSchemeProductSku.cs
@@ -1,4 +1,6 @@
-namespace BBWY.Client.Models
+using System;
+
+namespace BBWY.Client.Models
 {
     /// <summary>
     /// 采购商品的Sku
@@ -33,11 +35,23 @@
         public long SkuPurchaseSchemeId { get; set; }
         public long UserId { get; set; }
 
-        public int ItemTotal { get => itemTotal; set { Set(ref itemTotal, value); } }
+        public int ItemTotal
+        {
+            get => itemTotal; set
+            {
+                if (Set(ref itemTotal, value))
+                {
+                    SkuAmount = value * Price;
+                    OnItemTotalChanged?.Invoke(value);
+                }
+            }
+        }
 
         public decimal SkuAmount { get => skuAmount; set { Set(ref skuAmount, value); } }
 
         private int itemTotal;
         private decimal skuAmount;
+
+        public Action<int> OnItemTotalChanged { get; set; }
     }
 }
diff --git a/BBWY.Client/ViewModels/Order/ChoosePurchaseSchemeViewModel.cs b/BBWY.Client/ViewModels/Order/ChoosePurchaseSchemeViewModel.cs
index 3918c232..d38c7049 100644
--- a/BBWY.Client/ViewModels/Order/ChoosePurchaseSchemeViewModel.cs
+++ b/BBWY.Client/ViewModels/Order/ChoosePurchaseSchemeViewModel.cs
@@ -1,5 +1,6 @@
 using BBWY.Client.APIServices;
 using BBWY.Client.Models;
+using BBWY.Client.Views.Purchase;
 using BBWY.Common.Models;
 using GalaSoft.MvvmLight.Command;
 using System.Collections.Generic;
@@ -46,6 +47,7 @@ namespace BBWY.Client.ViewModels
 
         protected override void Unload()
         {
+            this.ItemTotal = 0;
             this.OrderId = this.SkuId = this.SkuName = string.Empty;
             PurchaseSchemeList.Clear();
         }
@@ -100,7 +102,8 @@ namespace BBWY.Client.ViewModels
 
         public void PreviewPurchase(PurchaseScheme purchaseScheme)
         {
-
+            var p = new _1688Purchase(this.OrderId, this.ItemTotal, purchaseScheme);
+            p.ShowDialog();
         }
     }
 }
diff --git a/BBWY.Client/ViewModels/Purchase/1688PreviewPurchaseViewModel.cs b/BBWY.Client/ViewModels/Purchase/1688PreviewPurchaseViewModel.cs
index e25b1e6a..53cb9f55 100644
--- a/BBWY.Client/ViewModels/Purchase/1688PreviewPurchaseViewModel.cs
+++ b/BBWY.Client/ViewModels/Purchase/1688PreviewPurchaseViewModel.cs
@@ -1,5 +1,6 @@
 using BBWY.Client.APIServices;
 using BBWY.Client.Models;
+using BBWY.Common.Trigger;
 using Newtonsoft.Json.Linq;
 using System;
 using System.Collections.Generic;
@@ -21,10 +22,13 @@ namespace BBWY.Client.ViewModels
         private int skuItemCount;
         private bool isLoading;
         private OneBoundAPIService oneBoundAPIService;
+        private DelayTrigger delayTrigger;
 
         public _1688PreviewPurchaseViewModel(OneBoundAPIService oneBoundAPIService)
         {
             this.oneBoundAPIService = oneBoundAPIService;
+            this.delayTrigger = new DelayTrigger();
+            this.delayTrigger.OnExecute = OnDelayTriggerExecute;
             PurchaseSchemeProductSkuList = new ObservableCollection<PurchaseSchemeProductSku>();
         }
 
@@ -74,6 +78,7 @@ namespace BBWY.Client.ViewModels
                         {
                             PurchaseSchemeProductSkuList.Add(purchaseSchemeProductSku);
                             purchaseSchemeProductSku.ItemTotal = skuItemCount;
+                            purchaseSchemeProductSku.OnItemTotalChanged = OnItemTotalChanged;
                         }
                     }
                 });
@@ -139,5 +144,16 @@ namespace BBWY.Client.ViewModels
             }
             return "pack://application:,,,/Resources/Images/defaultItem.png";
         }
+
+        private void OnItemTotalChanged(int itemTotal)
+        {
+            Console.WriteLine($"OnItemTotalChanged {DateTime.Now} {itemTotal}");
+            this.delayTrigger.SetKey(itemTotal.ToString());
+        }
+
+        private void OnDelayTriggerExecute(string key)
+        {
+         
+        }
     }
 }
diff --git a/BBWY.Client/Views/Order/ChoosePurchaseScheme.xaml b/BBWY.Client/Views/Order/ChoosePurchaseScheme.xaml
index 2cfb6a11..785a6a75 100644
--- a/BBWY.Client/Views/Order/ChoosePurchaseScheme.xaml
+++ b/BBWY.Client/Views/Order/ChoosePurchaseScheme.xaml
@@ -48,7 +48,9 @@
                                     <ColumnDefinition/>
                                 </Grid.ColumnDefinitions>
                                 <c:BButton Content="下单" HorizontalAlignment="Stretch"
-                                           Background="#1CC2A2"/>
+                                           Background="#1CC2A2"
+                                           Command="{Binding DataContext.PreviewPurchaseCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}}"
+                                           CommandParameter="{Binding }"/>
                                 <c:BButton Content="编辑" Grid.Column="1" HorizontalAlignment="Stretch"
                                            Background="#02A7F0"
                                            Command="{Binding DataContext.EditCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}}"
diff --git a/BBWY.Client/Views/Purchase/1688Purchase.xaml b/BBWY.Client/Views/Purchase/1688Purchase.xaml
index 3bc5f88d..3cac376f 100644
--- a/BBWY.Client/Views/Purchase/1688Purchase.xaml
+++ b/BBWY.Client/Views/Purchase/1688Purchase.xaml
@@ -5,12 +5,21 @@
            xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
            xmlns:local="clr-namespace:BBWY.Client.Views.Purchase"
            xmlns:c="clr-namespace:BBWY.Controls;assembly=BBWY.Controls"
+            xmlns:b="http://schemas.microsoft.com/xaml/behaviors"
            mc:Ignorable="d"
            Title="提交订单" Height="600" Width="800"
            Style="{StaticResource bwstyle}"
            MinButtonVisibility="Collapsed"
            MaxButtonVisibility="Collapsed"
            DataContext="{Binding _1688PreviewPurchase,Source={StaticResource Locator}}">
+    <b:Interaction.Triggers>
+        <b:EventTrigger EventName="Loaded">
+            <b:InvokeCommandAction Command="{Binding LoadCommand}"/>
+        </b:EventTrigger>
+        <b:EventTrigger EventName="Unloaded">
+            <b:InvokeCommandAction Command="{Binding UnloadCommand}"/>
+        </b:EventTrigger>
+    </b:Interaction.Triggers>
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="30"/>
@@ -25,7 +34,8 @@
         </Border>
 
         <DataGrid Grid.Row="1"
-                  ItemsSource="{Binding PurchaseSchemeProductSkuList}">
+                  ItemsSource="{Binding PurchaseSchemeProductSkuList}"
+                  RowHeight="90">
             <DataGrid.Columns>
                 <DataGridTemplateColumn Header="货品信息" HeaderStyle="{StaticResource ColumnHeaderStyle_Center}" Width="1*">
                     <DataGridTemplateColumn.CellTemplate>
@@ -40,21 +50,25 @@
                                 <c:BAsyncImage UrlSource="{Binding Logo}"
                                                                Width="80" DecodePixelWidth="80"
                                                                VerticalAlignment="Top" Margin="0,5,0,0"/>
-                                <TextBlock Text="{Binding Title}"/>
+                                <TextBlock Text="{Binding Title}" Grid.Column="1"
+                                           VerticalAlignment="Center"/>
                             </Grid>
                         </DataTemplate>
                     </DataGridTemplateColumn.CellTemplate>
                 </DataGridTemplateColumn>
-                <DataGridTextColumn Header="单价" HeaderStyle="{StaticResource ColumnHeaderStyle_Center}" Width="80" Binding="{Binding Price}"/>
+                <DataGridTextColumn Header="单价" HeaderStyle="{StaticResource ColumnHeaderStyle_Center}" Width="80" Binding="{Binding Price}"
+                                    ElementStyle="{StaticResource middleTextBlock}"/>
                 <DataGridTemplateColumn Header="数量" HeaderStyle="{StaticResource ColumnHeaderStyle_Center}" Width="100">
                     <DataGridTemplateColumn.CellTemplate>
                         <DataTemplate>
-                            <c:BTextBox Text="{Binding ItemTotal,Converter={StaticResource inputNumberConverter},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
+                            <c:BTextBox Text="{Binding ItemTotal,Converter={StaticResource inputNumberConverter},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
+                                        Width="60"/>
                         </DataTemplate>
                     </DataGridTemplateColumn.CellTemplate>
                 </DataGridTemplateColumn>
                 <DataGridTextColumn Header="金额" HeaderStyle="{StaticResource ColumnHeaderStyle_Center}" Width="80"
-                                    Binding="{Binding SkuAmount,Mode=OneWay,UpdateSourceTrigger=PropertyChanged}"/>
+                                    Binding="{Binding SkuAmount,Mode=OneWay,UpdateSourceTrigger=PropertyChanged}"
+                                    ElementStyle="{StaticResource middleTextBlock}"/>
             </DataGrid.Columns>
         </DataGrid>
 
diff --git a/BBWY.Client/Views/Purchase/1688Purchase.xaml.cs b/BBWY.Client/Views/Purchase/1688Purchase.xaml.cs
index 17d1e80f..ae6532ef 100644
--- a/BBWY.Client/Views/Purchase/1688Purchase.xaml.cs
+++ b/BBWY.Client/Views/Purchase/1688Purchase.xaml.cs
@@ -1,4 +1,6 @@
-using BBWY.Controls;
+using BBWY.Client.Models;
+using BBWY.Client.ViewModels;
+using BBWY.Controls;
 
 namespace BBWY.Client.Views.Purchase
 {
@@ -7,9 +9,10 @@ namespace BBWY.Client.Views.Purchase
     /// </summary>
     public partial class _1688Purchase : BWindow
     {
-        public _1688Purchase()
+        public _1688Purchase(string orderId, int skuItemCount, PurchaseScheme purchaseScheme)
         {
             InitializeComponent();
+            (this.DataContext as _1688PreviewPurchaseViewModel).SetData(orderId, skuItemCount, purchaseScheme);
         }
     }
 }
diff --git a/BBWY.Common/TaskSchedulers/DelayTrigger.cs b/BBWY.Common/TaskSchedulers/DelayTrigger.cs
new file mode 100644
index 00000000..53e7f318
--- /dev/null
+++ b/BBWY.Common/TaskSchedulers/DelayTrigger.cs
@@ -0,0 +1,70 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace BBWY.Common.Trigger
+{
+    /// <summary>
+    /// 延迟触发组件
+    /// </summary>
+    public class DelayTrigger
+    {
+        public DelayTrigger(int delayTime = 1000)
+        {
+            if (delayTime < 1000)
+                delayTime = 1000;
+            this.delayTime = delayTime;
+        }
+        /// <summary>
+        /// 延迟执行时间(ms)
+        /// </summary>
+        private int delayTime;
+
+        /// <summary>
+        /// 关键字
+        /// </summary>
+        private string currentKey;
+
+        /// <summary>
+        /// 是否可以执行
+        /// </summary>
+        private volatile bool canExecute;
+
+        /// <summary>
+        /// 是否正在延迟响应中
+        /// </summary>
+        private volatile bool isDelaying;
+
+
+        public Action<string> OnExecute;
+
+
+        public void SetKey(string key)
+        {
+            currentKey = key;
+            if (isDelaying)
+            {
+                canExecute = false;
+                return;
+            }
+            Task.Factory.StartNew(delegate
+            {
+                isDelaying = true;
+                while (true)
+                {
+                    canExecute = true;
+                    Thread.Sleep(delayTime);
+                    if (canExecute)
+                    {
+                        Console.ForegroundColor = ConsoleColor.Red;
+                        Console.WriteLine($"DelayTrigger {currentKey} Execute at {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ffff")}");
+                        Console.ResetColor();
+                        OnExecute?.Invoke(currentKey);
+                        isDelaying = false;
+                        break;
+                    }
+                }
+            });
+        }
+    }
+}