WPF 数据绑定 CheckBox.IsChecked [英] WPF Databinding CheckBox.IsChecked

问题描述

如何将 CheckBox 的 IsChecked 成员绑定到表单中的成员变量?

How would I bind the IsChecked member of a CheckBox to a member variable in my form?

(我意识到我可以直接访问它，但我正在尝试了解数据绑定和 WPF)

(I realize I can access it directly, but I am trying to learn about databinding and WPF)

以下是我尝试使其正常工作的失败尝试.

Below is my failed attempt to get this working.

XAML:

<Window x:Class="MyProject.Form1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Title" Height="386" Width="563" WindowStyle="SingleBorderWindow">
<Grid>
    <CheckBox Name="checkBoxShowPending" 
              TabIndex="2" Margin="0,12,30,0" 
              Checked="checkBoxShowPending_CheckedChanged" 
              Height="17" Width="92" 
              VerticalAlignment="Top" HorizontalAlignment="Right" 
              Content="Show Pending" IsChecked="{Binding ShowPending}">
    </CheckBox>
</Grid>
</Window>

代码:

namespace MyProject
{
    public partial class Form1 : Window
    {
        private ListViewColumnSorter lvwColumnSorter;

        public bool? ShowPending
        {
            get { return this.showPending; }
            set { this.showPending = value; }
        }

        private bool showPending = false;

        private void checkBoxShowPending_CheckedChanged(object sender, EventArgs e)
        {
            //checking showPending.Value here.  It's always false
        }
    }
}

推荐答案

<Window ... Name="MyWindow">
  <Grid>
    <CheckBox ... IsChecked="{Binding ElementName=MyWindow, Path=ShowPending}"/>
  </Grid>
</Window>

注意，我为 添加了一个名称，并更改了 CheckBox 中的绑定.您需要将 ShowPending 实现为 DependencyProperty 如果您希望它能够在更改时更新.

Note i added a name to <Window>, and changed the binding in your CheckBox. You will need to implement ShowPending as a DependencyProperty as well if you want it to be able to update when changed.

这篇关于WPF 数据绑定 CheckBox.IsChecked的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！