[英]XAML TextBox isReadOnly Binding
I am trying to make a textbox read only using Binding in Windows 8.1 apps. 我试图使用Windows 8.1应用程序中的Binding只读取文本框。 I have tried some code from the internet which does not work. 我尝试过一些无法正常工作的代码。 Can you suggest any simplest way to do it, I am very new to the concept Binding. 你能提出任何最简单的方法吗,我对Binding这个概念很新。
XAML XAML
<TextBox x:Name="tbOne" IsReadOnly="{Binding Path=setread, Mode=OneWay}" />
<Button Content="isReadonlyBinding" x:Name="isReadonlyBinding" Click="isReadonlyBinding_Click"></Button>
XAML.CS XAML.CS
public static readonly DependencyProperty IsReadOnlyProperty = DependencyProperty.Register(
"setread",
typeof(bool),
typeof(MainPage),
new PropertyMetadata(false)
);
public bool setread
{
get { return (bool)GetValue(IsReadOnlyProperty); }
set { SetValue(IsReadOnlyProperty, value); }
}
private void isReadonlyBinding_Click(object sender, RoutedEventArgs e)
{
setread = true;
}
try this. 试试这个。
<page X:name="PageName">
IsReadOnly="{Binding ElementName=PageName,Path=setread, Mode=OneWay}"
Implement INotifyPropertyChanged
on your code behind. 在你的代码背后实现INotifyPropertyChanged
。 Then modify the property as follows: 然后按如下方式修改属性:
private bool _setread;
public bool Setread
{
get { return _setread; }
set {
if(_seatread == value) return;
_setread = value;
RaisePropertyChanged("Setread");
}
}
Give a name to root element like x:Name="root"
, and bind to Setread
with ElementName=page
. 为root元素命名,如x:Name="root"
,并使用ElementName=page
绑定到Setread
。 Note that it is much better to prepare a view model. 请注意,准备视图模型要好得多。 A view-model-code-behind is just a quick workaround. 视图模型代码隐藏只是一种快速的解决方法。
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