如何在XamGrid中显示多行

时间:2013-07-17 12:29:21

标签: c# wpf xaml

我正在使用ListBox控件来显示项目并且当我加倍Cilck项目意味着他们的特定项目字段将在xamgrid中显示,问题是当我选择项目意味着它的显示但我需要在网格中显示多个内容为一个或更多项目

我的编码是,

private void LsImageGallery_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            RTBSPROJECT.DB.RTBSInventoryMgmtEntities2 MyRTBSinventoryDB = new DB.RTBSInventoryMgmtEntities2();

            RTBSPROJECT.DB.RTBSInventoryMgmtEntities2 DB_Linq = new DB.RTBSInventoryMgmtEntities2();
         try
        {

        string curItem = LsImageGallery.SelectedItem.ToString();

        #region

        if (cmbItemCombo.SelectedItem == null)
        {


            var SelectedImage = (ImageEntity)this.LsImageGallery.SelectedItem;

            string ItemName = SelectedImage.ItemName_EN;

            var query = (from MyItems in MyRTBSinventoryDB.tbl_ItemMaster
                         where MyItems.ActiveFlag == true &&
                         MyItems.ItemName_EN == ItemName
                         select MyItems).ToList();

            xamGrid1.ItemsSource = query;
}

每次显示一条记录,如果我选择第二条意味着之前选择的不应该清除两者应该显示请帮助我..

1 个答案:

答案 0 :(得分:0)

我不是百分百肯定你在这里问的是什么,但无论如何我都会去。在我看来,您正在尝试向DataGrid添加更多行,而只显示新项目。

这是因为您正在更改DataGrid的ItemsSource属性,如果您希望将新项目添加到底部,那么ItemsSource需要保持不变并添加新行。

这可以使用DataGrid上的Items.Add()方法完成,遍历数据行并为每个数据行调用add,或者您可以创建一个只需双击即可添加的Items集合,I' ve提供了第二个例子。

就像你的应用程序一样,它显示了一个ListBox和一个DataGrid,每当你双击ListBox中的一个项目时,就会有更多的行被添加到DataGrid中。

XAML

 <Window x:Class="WpfApplication1.MainWindow"
            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            DataContext="{Binding RelativeSource={RelativeSource Self}}"
            Title="MainWindow" Height="350" Width="525">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition/>
                <ColumnDefinition/>
            </Grid.ColumnDefinitions>
            <ListBox Grid.Column="0" ItemsSource="{Binding Items}" MouseDoubleClick="ListBox_MouseDoubleClick"/>
            <DataGrid Grid.Column="1" ItemsSource="{Binding GridItems}">
                <DataGrid.Columns>
                    <DataGridTextColumn Binding="{Binding}"/>
                </DataGrid.Columns>
            </DataGrid>
        </Grid>
    </Window>

背后的代码

using System;
using System.Collections.ObjectModel;
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class MainWindow : Window
    {
        // This collection is bound to the ListBox so there are items to select from.
        public ObservableCollection<object> Items
        {
            get { return (ObservableCollection<object>)GetValue(ItemsProperty); }
            set { SetValue(ItemsProperty, value); }
        }
        public static readonly DependencyProperty ItemsProperty =
            DependencyProperty.Register("Items", typeof(ObservableCollection<object>), typeof(MainWindow), new PropertyMetadata(null));

        // On double click of each item in the ListBox more items will be added to this collection.
        public ObservableCollection<object> GridItems
        {
            get { return (ObservableCollection<object>)GetValue(GridItemsProperty); }
            set { SetValue(GridItemsProperty, value); }
        }       
        public static readonly DependencyProperty GridItemsProperty =
            DependencyProperty.Register("GridItems", typeof(ObservableCollection<object>), typeof(MainWindow), new PropertyMetadata(null));

        public MainWindow()
        {
            InitializeComponent();

            // Some demo items so we can double click.
            Items = new ObservableCollection<object>();
            Items.Add("test item 1");
            Items.Add("test item 2");
            Items.Add("test item 3");
            Items.Add("test item 4");
            Items.Add("test item 5");
            Items.Add("test item 6");
            Items.Add("test item 7");

            GridItems = new ObservableCollection<object>();
        }

        private void ListBox_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            // These would be the entries from your database, I'm going to add random numbers.
            Random rnd = new Random();

            for (int i = 0; i < rnd.Next(5); i++)
                GridItems.Add(rnd.Next(100));
        }
    }
}