强大的DataGrid组件[10]_自定义脚模板(FooterTemplate)

在DataGrid的开发设计中,我们经常要对DataGrid中的数据进行统计,而统计的结果往往放置在DataGrid的底部,这就需要使用脚模板来对其进行处理。可是问题在于Silverlight并未提供现成的脚模板。于是,本文将为大家介绍如何为DataGrid添加设置脚模板。

需要了解的知识

我们知道DataGrid有一个十分重要的属性ItemsSource,它的作用是获取或设置被用于生成该控件内容的集合(Collection)。这也就是说,它代表了DataGrid中所有数据项的集合。

通过对其进行操作,我们便能够容易地得到统计数据。

具体步骤

1)确定要进行统计的数据列

2)运用StackPanel或Grid结合进行脚模板的构造

3)遍历DataGrid的ItemsSource的所有需要统计的数据列,进行数据汇总

4)将结果传递至脚模板显示

实例

MainPage.xaml文件代码:

<UserControl

    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"

    xmlns:dataprimitives="clr-namespace:System.Windows.Controls.Primitives;assembly=System.Windows.Controls.Data"

    mc:Ignorable="d" xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data" x:Class="SilverlightClient.MainPage"

    d:DesignWidth="320" d:DesignHeight="320">

    <Grid x:Name="LayoutRoot" Width="320" Height="320" Background="White">

    <StackPanel Orientation="Vertical" Width="320" Height="320">

        <data:DataGrid x:Name="dgEmployee" AutoGenerateColumns="False" Margin="8,8,0,71" Background="#FFDEF2F0" FontSize="14" HorizontalAlignment="Left" Width="263" Height="156">

            <data:DataGrid.Columns>

                <data:DataGridTextColumn Header="数量" Width="80" Binding="{Binding Quantity,Mode=TwoWay}"/>

                <data:DataGridTextColumn Header="单价" Width="80" Binding="{Binding Price,Mode=TwoWay}"/>

                <data:DataGridTextColumn Header="总数" Width="100" Binding="{Binding Total,Mode=TwoWay}"/>

            </data:DataGrid.Columns>

        </data:DataGrid>

        <TextBlock FontSize="14" x:Name="dataTotal" TextAlignment="Right" Height="31" Margin="8,-110,49,0"/>

    </StackPanel>

    </Grid>

</UserControl>

MainPage.xaml.cs文件代码:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

 

namespace SilverlightClient

{

    public class Products

    {

        public int Quantity { get; set; }

        public int Price { get;set;}

        public int Total { get; set; }

    }

 

    public partial class MainPage : UserControl

    {

        public MainPage()

        {

            InitializeComponent();

            this.Loaded += new RoutedEventHandler(MainPage_Loaded);

        }

 

        void MainPage_Loaded(object sender, RoutedEventArgs e)

        {

            List<Products> em1 = new List<Products>();

            em1.Add(new Products() { Quantity = 20, Price = 130, Total = 2600 });

            em1.Add(new Products() { Quantity = 5, Price = 800, Total = 4000 });

            em1.Add(new Products() { Quantity = 10, Price = 2000, Total = 20000 });

           

            dgEmployee.ItemsSource = em1;

            int total = 0;

            foreach (object o in dgEmployee.ItemsSource)

            {

                Products item = o as Products;

                total += item.Total;

            }

            dataTotal.Text = "总计:" + total.ToString();

        }

    }

}

最终效果图

原文地址:https://www.cnblogs.com/bingyun84/p/1556028.html