動作環境
Windows 8.1 Pro (64bit)
Microsoft Visual Studio 2017 Community
概要
-
ObservableCollection<T>
型のmyItemを持つ - MVVM形式とする
- ViewModelコンストラクタでmyItemにデータを生成
- Updateボタン押下時にmyItemにデータを追加
ファイル
- ViewModelBase.cs
- MainWindow.xaml.cs
- 初期実装のまま
- MainWindow.xaml
- 初期実装から変更
- ViewModel.cs
- 実装した
code
MainWindow.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace _170630_t1800_MVVM_Icmd_DataTable
{
/// <summary>
/// MainWindow.xaml の相互作用ロジック
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
}
MainWindow.xaml
<Window x:Class="_170630_t1800_MVVM_Icmd_DataTable.MainWindow"
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:local="clr-namespace:_170630_t1800_MVVM_Icmd_DataTable"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.DataContext>
<local:ViewModel/>
</Window.DataContext>
<Grid>
<StackPanel>
<Button Content="Update" x:Name="uxUpdate" Width="100"
Command="{Binding UpdateCommand}"/>
<DataGrid x:Name="dataGrid1" ItemsSource="{Binding myItem}"/>
</StackPanel>
</Grid>
</Window>
ViewModel.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
//
using System.Collections.ObjectModel;
using System.Windows.Input;
using System.Windows;
namespace _170630_t1800_MVVM_Icmd_DataTable
{
class ViewModel : ViewModelBase
{
// コンストラクタ
public ViewModel()
{
myItem = new ObservableCollection<TestItem>();
myItem.Add(new TestItem { Id = 0, Name = "7of9", Age = 30, Gender = "Female" });
myItem.Add(new TestItem { Id = 1, Name = "Janeway", Age = 50, Gender = "Female" });
//
UpdateCommand = CreateCommand(param => MyUpdateCommand());
}
public ObservableCollection<TestItem> myItem { get; set; }
public ICommand UpdateCommand { get; private set; }
public void MyUpdateCommand()
{
myItem.Add(new TestItem { Id = 2, Name = "Chakotay", Age = 45, Gender = "Male" });
MessageBox.Show("Updated");
}
public class TestItem
{
public int Id { get; set; }
public string Name { get; set; }
public int Age { get; set; }
public string Gender { get; set; }
}
}
}