然后，我们只要在MainPage.xaml.cs文件中添加如下代码：
public MainPage()
{
InitializeComponent();
this.Loaded += OnLoaded;
}
void OnLoaded(object sender, RoutedEventArgs e)
{
this.DataContext = new EmailInfo("daizhj617595@126.com", "你好！", "这是邮件内容", 1);
}
{
InitializeComponent();
this.Loaded += OnLoaded;
}
void OnLoaded(object sender, RoutedEventArgs e)
{
this.DataContext = new EmailInfo("daizhj617595@126.com", "你好！", "这是邮件内容", 1);
}
接着，运行一下代码：
另外，如果想要收集错误信息，以便统一进行显示的话，可以使用“OnValidationError”事件，如下：
public ObservableCollection<ValidationError> Errors { get; set; }
public MainPage()
{
InitializeComponent();
this.Errors = new ObservableCollection<ValidationError>();
this.Loaded += OnLoaded;
}
void OnLoaded(object sender, RoutedEventArgs e)
{
this.DataContext = new EmailInfo("daizhj617595@126.com", "你好！", "这是邮件内容", 1);
}
private void OnValidationError(object sender, ValidationErrorEventArgs e)
{
if(e.Action == ValidationErrorEventAction.Added)
Errors.Add(e.Error);
else if (e.Action == ValidationErrorEventAction.Removed)
Errors.Remove(e.Error);
}
public MainPage()
{
InitializeComponent();
this.Errors = new ObservableCollection<ValidationError>();
this.Loaded += OnLoaded;
}
void OnLoaded(object sender, RoutedEventArgs e)
{
this.DataContext = new EmailInfo("daizhj617595@126.com", "你好！", "这是邮件内容", 1);
}
private void OnValidationError(object sender, ValidationErrorEventArgs e)
{
if(e.Action == ValidationErrorEventAction.Added)
Errors.Add(e.Error);
else if (e.Action == ValidationErrorEventAction.Removed)
Errors.Remove(e.Error);
}
这样错误信息就被添加到Errors集合中了。
另外还可以通过“点击提交按钮”方式来统一进行收集，下面是一个Button的Click事件代码：
void OnSubmit(object sender, RoutedEventArgs args)
{
List<ValidationError> errors = new List<ValidationError>();
foreach (UIElement ui in LayoutRoot.Children)
{
FrameworkElement fe = ui as FrameworkElement;
if (fe != null)
{
foreach (ValidationError ve in Validation.GetErrors(fe))
{
errors.Add(ve);
}
}
}
}
{
List<ValidationError> errors = new List<ValidationError>();
foreach (UIElement ui in LayoutRoot.Children)
{
FrameworkElement fe = ui as FrameworkElement;
if (fe != null)
{
foreach (ValidationError ve in Validation.GetErrors(fe))
{
errors.Add(ve);
}
}
}
}
