繰り返しますが、私は今週まったく同じことを通じて行ってきました！私は）
<validators:ValidatedContent Name="Validator" >
<!-- All your textboxes here -->
</validators:ValidatedContent>
は、あなたが他のものを入れて同じ場所に以下のクラスを追加します...そしてあなたがValidator.Validate（呼び出すことができます...これであなたのテキストボックスをラップし、ウェブ上で次を発見しましたボタンをクリックするかどこからでもあなたが望む場所から。など、あなたが保存したいかどうかを決定するために使用することができますIsContentValidプロパティは、私もそう、私はそれが誰かを助ける場合には、私の回避策を掲載しています。このいくつかの問題があった
public class ValidatedContent : Decorator
{
#region Public Constructors
/// <summary>
/// Initializes a new instance of ValidatedContent
/// </summary>
public ValidatedContent()
{
ErrorMessages = new ObservableCollection<string>();
Loaded += new RoutedEventHandler(OnValidatedContentLoaded);
}
#endregion
#region Event Handlers
/// <summary>
/// Handles the loaded event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnValidatedContentLoaded(object sender, RoutedEventArgs e)
{
Queue<DependencyObject> elementQueue = new Queue<DependencyObject>();
elementQueue.Enqueue(this.Child);
// Iterate over all the child elements
while (elementQueue.Count > 0)
{
// Dequeue the first element in the queue
DependencyObject element = elementQueue.Dequeue();
if (element != null)
{
foreach (var childElement in LogicalTreeHelper.GetChildren(element))
{
if (childElement is DependencyObject)
elementQueue.Enqueue((DependencyObject)childElement);
}
}
Control control = element as Control;
// Mark the element as valid if it is a control
if (control != null && GetIsRequired(element))
{
control.SetValue(Control.StyleProperty, RequiredControlStyle);
}
}
}
#endregion
#region Dependency Properties
public static readonly DependencyProperty IsContentValidProperty =
DependencyProperty.Register("IsContentValid", typeof(bool),
typeof(ValidatedContent), new UIPropertyMetadata(false));
public static readonly DependencyProperty ErrorMessagesProperty =
DependencyProperty.Register("ErrorMessages", typeof(ObservableCollection<string>),
typeof(ValidatedContent), new UIPropertyMetadata(null));
public static readonly DependencyProperty RequiredControlStyleProperty =
DependencyProperty.Register("RequiredControlStyle", typeof(Style),
typeof(ValidatedContent), new UIPropertyMetadata(null));
public static readonly DependencyProperty IsRequiredProperty =
DependencyProperty.RegisterAttached("IsRequired", typeof(bool),
typeof(ValidatedContent), new UIPropertyMetadata(false));
#endregion
#region Public Properties
/// <summary>
/// Gets or sets the style to mark a required control
/// </summary>
public Style RequiredControlStyle
{
get { return (Style)GetValue(RequiredControlStyleProperty); }
set { SetValue(RequiredControlStyleProperty, value); }
}
/// <summary>
/// Gets or sets the error messages for the validated content
/// </summary>
public ObservableCollection<string> ErrorMessages
{
get { return (ObservableCollection<string>)GetValue(ErrorMessagesProperty); }
private set { SetValue(ErrorMessagesProperty, value); }
}
/// <summary>
/// Gets if the content is valid
/// </summary>
public bool IsContentValid
{
get { return (bool)GetValue(IsContentValidProperty); }
private set { SetValue(IsContentValidProperty, value); }
}
#endregion
#region Public Methods
/// <summary>
/// Validates the content of the decorator
/// </summary>
public void Validate()
{
IsContentValid = true;
ErrorMessages.Clear();
Queue<DependencyObject> elementQueue = new Queue<DependencyObject>();
elementQueue.Enqueue(this.Child);
// Iterate over all the child elements
while (elementQueue.Count > 0)
{
// Dequeue the first element in the queue
DependencyObject element = elementQueue.Dequeue();
foreach (var childElement in LogicalTreeHelper.GetChildren(element))
{
if (childElement is DependencyObject)
elementQueue.Enqueue((DependencyObject)childElement);
}
// Validate the bindings of the element
ValidateBindings(element);
}
}
#endregion
#region Private Methods
/// <summary>
/// Validates the bindings of the dependency object
/// </summary>
/// <param name="element"></param>
private void ValidateBindings(DependencyObject element)
{
if (element != null)
{
Type elementType = element.GetType();
FieldInfo[] dependencyPropertyFields = elementType.GetFields(
BindingFlags.Static | BindingFlags.Public | BindingFlags.DeclaredOnly);
// Iterate over all dependency properties
foreach (FieldInfo dependencyPropertyField in dependencyPropertyFields)
{
DependencyProperty dependencyProperty =
dependencyPropertyField.GetValue(element) as DependencyProperty;
if (dependencyProperty != null)
{
Binding binding = BindingOperations.GetBinding(element, dependencyProperty);
BindingExpression bindingExpression = BindingOperations.GetBindingExpression(element, dependencyProperty);
// Issue 1822 - Extra check added to prevent null reference exceptions
if (binding != null && bindingExpression != null)
{
// Validate the validation rules of the binding
foreach (ValidationRule rule in binding.ValidationRules)
{
ValidationResult result = rule.Validate(element.GetValue(dependencyProperty),
CultureInfo.CurrentCulture);
bindingExpression.UpdateSource();
if (!result.IsValid)
{
ErrorMessages.Add(result.ErrorContent.ToString());
}
IsContentValid &= result.IsValid;
}
}
}
}
}
}
#endregion
#region Static Methods
/// <summary>
/// Gets the value for the IsRequired attached property
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static bool GetIsRequired(DependencyObject obj)
{
return (bool)obj.GetValue(IsRequiredProperty);
}
/// <summary>
/// Sets the value for the IsRequired attached property
/// </summary>
/// <param name="obj"></param>
/// <param name="value"></param>
public static void SetIsRequired(DependencyObject obj, bool value)
{
obj.SetValue(IsRequiredProperty, value);
}
#endregion
}
ありがとうございました。もう一つ質問！検証は、TextBoxに何かを入力してからそれを削除し、TextBoxからフォーカスを失った場合にのみ発生します。TextBoxが空でフォーカスが失われたときに検証を実行するには、とにかくありますか？ – azamsharp