IsEnabled绑定到布尔值 [英] IsEnabled binding to a boolean

问题描述

我有一个简单的对话框列表，其中包含一些复选框，我希望有一个确定"按钮，除非用户更改设置，否则该按钮将被禁用.在我看来，我具有将按钮的isEnabled属性绑定到的OkEnabled属性，如果复选框的值更改，它将OkEnabled设置为true，但是由于某些原因，这不会启用按钮.

I have a list a simple dialog box which contains a few checkboxes, I wanted to have an Ok button that would be disabled unless the user changed a setting. In my view I have an OkEnabled property that I was binding the isEnabled property of the button to, if a check box changes its value it sets OkEnabled to true, but for some reason this doesnt enable the button.

public bool OkEnabled
{
    get
    {
        return m_okEnabled;
    }
    set
    {
        m_okEnabled = value;
        OnPropertyChanged("OkEnabled");
    }
}

<Button Content="OK" Style="{StaticResource MyButton}" Height="23" 
        HorizontalAlignment="Left" Margin="20" Name="m_okbutton" 
        VerticalAlignment="Top" Width="75"
        Click="okClick" IsEnabled="{Binding Path=OkEnabled}"/>

由于某些原因，当OkEnabled属性更改状态时，确定"按钮不会更改状态.如果将IsEnabled属性绑定到其中一个复选框，则可以看到该复选框更改时按钮的更改状态.

For some reason the Ok button won't change state when the OkEnabled property changes state. If I bind the IsEnabled property to one of the checkboxes I can see the button change state as the check box changes.

推荐答案

在我看来，我有一个OkEnabled属性

In my view I have an OkEnabled property

默认情况下，绑定是相对于DataContext而非视图的.您是否将视图设置为其自己的DataContext?

By default, bindings are relative to the DataContext, not the view. Did you set the view as its own DataContext ?

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