依赖属性的reactiveui whenany

本文介绍了依赖属性的reactiveui whenany的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个带有两个文本框和 ReactiveUI 的简单 WPF 应用程序.我尝试使用 WhenAny

I have simple WPF app with two textboxes and ReactiveUI. I try to lookup for dependency property of first textbox by using WhenAny

public partial class MainWindow : Window { public MainWindow() { RxApp.DeferredScheduler = DispatcherScheduler.Current; InitializeComponent(); Text1.WhenAny(i => i.Text, i => i.Value).Subscribe(_ => SomeMethod()); } void SomeMethod() { MessageBox.Show("Boom!"); } }

我的表单代码是

<Window x:Class="TestObservable.MainWindow" xmlns="schemas.microsoft/winfx/2006/xaml/presentation" xmlns:x="schemas.microsoft/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="*"></ColumnDefinition> <ColumnDefinition Width="*"></ColumnDefinition> </Grid.ColumnDefinitions> <TextBox Name="Text1" Grid.Column="0"></TextBox> <TextBox Name="Text2" Grid.Column="1"></TextBox> </Grid>

但是当我更改 TextBox 文本时，它不会显示给我

BUT When I change TextBox Text it doesn't show to me

有什么问题吗?

推荐答案

试试这个:

this.WhenAny(x => x.Text1.Text, x => x.Value);

如果它不起作用，我相信您是被 ReactiveUI 4.1 中的错误所困扰.升级到 4.2(几天前发布)可能会修复它.

If it doesn't work, I believe you're being bitten by a bug in ReactiveUI 4.1. Upgrading to 4.2 (released a few days ago) may fix it.