我在WPF中创建了一个UserControl。 此用户控件具有多个文本框，这些文本框绑定到数据库对象上的属性，该对象由UserControl上的proptery引用。 xaml看起来像：
<TextBox Name="_txtFirstName" Text="{Binding Path=Contact.FirstName, UpdateSourceTrigger=PropertyChanged}"/>这工作正常，直到我将Contact属性变为依赖属性，以便我可以将它绑定到ListBox中的选定项。 一旦我这样做了TextBoxes的绑定停止工作。 为什么是这样？
DependencyProperty代码是：
public static readonly DependencyProperty ContactProperty = DependencyProperty.Register( "Contact", typeof(Contacts), typeof(ContactView));I created a UserControl in WPF. This user control has several text boxes that are bound to properties on a database object which is referenced by proptery on the UserControl. The xaml looks like:
<TextBox Name="_txtFirstName" Text="{Binding Path=Contact.FirstName, UpdateSourceTrigger=PropertyChanged}"/>This worked properly until I made the Contact property into a dependency property so that I could bind it to the selected item in a ListBox. Once I did this the binding of the TextBoxes stopped working. Why is this?
The DependencyProperty code was:
public static readonly DependencyProperty ContactProperty = DependencyProperty.Register( "Contact", typeof(Contacts), typeof(ContactView));最满意答案
我解决了这个问题。 我忘了更改此代码：
public Contacts Contact
{
get { return _contact; }
set { _contact = value; }
}
对此：
public Contacts Contact
{
get { return (Contacts)GetValue(ContactProperty); }
set { SetValue(ContactProperty, value); }
}
现在它正常工作。
I figured out the problem. I forgot to change this code:
public Contacts Contact
{
get { return _contact; }
set { _contact = value; }
}
To this:
public Contacts Contact
{
get { return (Contacts)GetValue(ContactProperty); }
set { SetValue(ContactProperty, value); }
}
Now it works properly.
WPF依赖属性数据绑定问题(WPF Dependency Property Data Binding Problem)
我在WPF中创建了一个UserControl。 此用户控件具有多个文本框，这些文本框绑定到数据库对象上的属性，该对象由UserControl上的proptery引用。 xaml看起来像：
<TextBox Name="_txtFirstName" Text="{Binding Path=Contact.FirstName, UpdateSourceTrigger=PropertyChanged}"/>
这工作正常，直到我将Contact属性变为依赖属性，以便我可以将它绑定到ListBox中的选定项。 一旦我这样做了TextBoxes的绑定停止工作。 为什么是这样？
DependencyProperty代码是：
public static readonly DependencyProperty ContactProperty = DependencyProperty.Register(
"Contact", typeof(Contacts), typeof(ContactView));
I created a UserControl in WPF. This user control has several text boxes that are bound to properties on a database object which is referenced by proptery on the UserControl. The xaml looks like:
<TextBox Name="_txtFirstName" Text="{Binding Path=Contact.FirstName, UpdateSourceTrigger=PropertyChanged}"/>
This worked properly until I made the Contact property into a dependency property so that I could bind it to the selected item in a ListBox. Once I did this the binding of the TextBoxes stopped working. Why is this?
The DependencyProperty code was:
public static readonly DependencyProperty ContactProperty = DependencyProperty.Register(
"Contact", typeof(Contacts), typeof(ContactView));
最满意答案
我解决了这个问题。 我忘了更改此代码：
public Contacts Contact
{
get { return _contact; }
set { _contact = value; }
}
对此：
public Contacts Contact
{
get { return (Contacts)GetValue(ContactProperty); }
set { SetValue(ContactProperty, value); }
}
现在它正常工作。
I figured out the problem. I forgot to change this code:
public Contacts Contact
{
get { return _contact; }
set { _contact = value; }
}
To this:
public Contacts Contact
{
get { return (Contacts)GetValue(ContactProperty); }
set { SetValue(ContactProperty, value); }
}
Now it works properly.
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