使用这个简单的代码:
MainWindows:
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace itemcontrole_lesson
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public class TodoItem
{
public string Username { get; set; }
public int Completion { get; set; }
}
public partial class MainWindow : Window
{
List<TodoItem> items = new List<TodoItem>();
public MainWindow()
{
InitializeComponent();
items.Add(new TodoItem() { Username = "Eric", Completion = 45 });
items.Add(new TodoItem() { Username = "Maxwell", Completion = 80 });
items.Add(new TodoItem() { Username = "Sarah", Completion = 60 });
icTodoList.ItemsSource = items;
}
}
Mainwindows XAML:
<Window x:Class="itemcontrole_lesson.MainWindow"
xmlns:local="clr-namespace:itemcontrole_lesson"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<ItemsControl x:Name="icTodoList">
<ItemsControl.ItemTemplate>
<DataTemplate DataType="{x:Type local:UserControl1}">
<local:UserControl1 />
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
</Window>
然后是一个简单的UserControle:
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 itemcontrole_lesson
{
/// <summary>
/// Interaction logic for UserControl1.xaml
/// </summary>
public partial class UserControl1 : UserControl
{
public UserControl1()
{
InitializeComponent();
//String CurentUserName = ????????
//Int Progress = ????????
}
private void Button_Click(object sender, RoutedEventArgs e)
{
///hows to remove the user from items in main windows??
}
}
}
UserControle XAML
<UserControl x:Class="itemcontrole_lesson.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="54.181" Width="399.331">
<Grid Margin="0,0,-155,0">
<Label Content="{Binding Username}" HorizontalAlignment="Left" Margin="23,23,0,0" VerticalAlignment="Top"/>
<Button Content="Close this UC" HorizontalAlignment="Left" Margin="414,22,0,0" VerticalAlignment="Top" Width="119" Click="Button_Click"/>
<ProgressBar HorizontalAlignment="Left" Value="{Binding Completion}" Height="10" Margin="204,23,0,0" VerticalAlignment="Top" Width="154"/>
</Grid>
</UserControl>
如果你测试,按F5一切都会正常。 但!我应该如何在我的usercontrole代码中检索我的变量值? 看看我在UC中发表评论的地方。 1-我至少需要找到一种方法从UI和项目列表中删除此控件? 2 - 我想在我的控件中访问用户名并将其设置为var 有什么建议吗?
答案 0 :(得分:0)
解决方案1:
使用按钮的Tag属性,如下所示:
<Button Content="Close this UC" HorizontalAlignment="Left" Margin="414,22,0,0"
VerticalAlignment="Top" Width="119" Click="Button_Click" Tag="{Binding RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" />
事件处理程序:
private void Button_Click(object sender, RoutedEventArgs e)
{
var button = sender as Button;
List<object> list = (button.Tag as ItemsControl).ItemsSource.OfType<TodoItem>().ToList<object>();
list.Remove(button.DataContext);
(button.Tag as ItemsControl).ItemsSource = list;
}
解决方案2:
更优雅的解决方案:
在Style
:
MainWindow
<Window.Resources>
<Style TargetType="Button">
<EventSetter Event="Click" Handler="Button_Click"/>
</Style>
</Window.Resources>
现在任何
Button
Click
事件的处理程序都在MainWindow.xaml.cs
。
然后更改handler
定义,如下所示:
private void Button_Click(object sender, RoutedEventArgs e)
{
var button = sender as Button;
items.Remove(button.DataContext as TodoItem);
icTodoList.ItemsSource = null;
icTodoList.ItemsSource = items;
}