1
我在我的CustomControl上设置了一个BindingGroup并实现了一个Validator函数。以下是来自XAML的代码片段。我的问题是验证器永远不会被调用。当我创建一个小样本程序时,事情正在起作用。我怎么能找出原因呢?Bindinggroup valiation function not called
XAML:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApplication1"
Title="MainWindow" Height="350" Width="525">
<Window.BindingGroup>
<BindingGroup>
<BindingGroup.ValidationRules>
<local:DurationValidator/>
</BindingGroup.ValidationRules>
</BindingGroup>
</Window.BindingGroup>
<StackPanel>
<TextBox Text="{Binding SomeString, UpdateSourceTrigger=PropertyChanged}"></TextBox>
<Button>add</Button>
</StackPanel>
</Window>
后面的代码:
namespace WpfApplication1
{
public partial class MainWindow : Window, INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
public MainWindow()
{
InitializeComponent();
this.DataContext = this;
SomeString = "Some string";
}
private string _someString;
public string SomeString
{
get { return _someString; }
set
{
if (_someString == value) return;
_someString = value;
if (this.PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs("SomeString"));
}
}
}
public class DurationValidator : ValidationRule
{
public override ValidationResult Validate(object value, System.Globalization.CultureInfo cultureInfo)
{
BindingGroup bindingGroup = (BindingGroup)value;
return new ValidationResult(false, "Whatever");
}
}
}
邮政更多的代码... – 2015-03-02 17:54:01
我已经减少了该项目只是一个XAML和代码背后,仍然显示错误。 – 2015-03-02 19:30:52