wpf绑定时UpdateSourceTrigger属性

最新推荐文章于 2024-07-03 15:47:03 发布

圣☞摧枯拉朽

最新推荐文章于 2024-07-03 15:47:03 发布

阅读量266

点赞数

文章标签： wpf

本文链接：https://blog.youkuaiyun.com/u011500419/article/details/129079399

版权

<Window x:Class="WpfTutorialSamples.DataBinding.DataContextSample"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="DataContextSample" Height="130" Width="310">
        <StackPanel Margin="15">
                <WrapPanel>
                        <TextBlock Text="Window title:  " />
                        <TextBox Name="txtWindowTitle" Text="{Binding Title, UpdateSourceTrigger=Explicit}" Width="150" />
                        <Button Name="btnUpdateSource" Click="btnUpdateSource_Click" Margin="5,0" Padding="5,0">*</Button>
                </WrapPanel>
                <WrapPanel Margin="0,10,0,0">
                        <TextBlock Text="Window dimensions: " />
                        <TextBox Text="{Binding Width, UpdateSourceTrigger=LostFocus}" Width="50" />
                        <TextBlock Text=" x " />
                        <TextBox Text="{Binding Height, UpdateSourceTrigger=PropertyChanged}" Width="50" />
                </WrapPanel>
        </StackPanel>
</Window>
123456789101112131415161718

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
 
namespace WpfTutorialSamples.DataBinding
{
        public partial class DataContextSample : Window
        {
                public DataContextSample()
                {
                        InitializeComponent();
                        this.DataContext = this;
                }
 
                private void btnUpdateSource_Click(object sender, RoutedEventArgs e)
                {
                        BindingExpression binding = txtWindowTitle.GetBindingExpression(TextBox.TextProperty);
                        binding.UpdateSource();
                }
        }
}