本文整理汇总了C#中System.Windows.Data.BindingGroup类的典型用法代码示例。如果您正苦于以下问题：C# BindingGroup类的具体用法？C# BindingGroup怎么用？C# BindingGroup使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
BindingGroup类属于System.Windows.Data命名空间，在下文中一共展示了BindingGroup类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Submit_Click
private void Submit_Click(object sender, RoutedEventArgs e)
{
if (stackPanel1.BindingGroup.CommitEdit())
{
MessageBox.Show("Item submitted");
stackPanel1.BindingGroup.BeginEdit();
}
}
// This event occurs when a ValidationRule in the BindingGroup
// or in a Binding fails.
private void ItemError(object sender, ValidationErrorEventArgs e)
{
if (e.Action == ValidationErrorEventAction.Added)
{
MessageBox.Show(e.Error.ErrorContent.ToString());
}
}
void stackPanel1_Loaded(object sender, RoutedEventArgs e)
{
// Set the DataContext to a PurchaseItem object.
// The BindingGroup and Binding objects use this as
// the source.
stackPanel1.DataContext = new PurchaseItem();
// Begin an edit transaction that enables
// the object to accept or roll back changes.
stackPanel1.BindingGroup.BeginEdit();
}
private void Cancel_Click(object sender, RoutedEventArgs e)
{
// Cancel the pending changes and begin a new edit transaction.
stackPanel1.BindingGroup.CancelEdit();
stackPanel1.BindingGroup.BeginEdit();
}示例2: Validate
public class ValidateDateAndPrice : ValidationRule
{
// Ensure that an item over $100 is available for at least 7 days.
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
BindingGroup bg = value as BindingGroup;
// Get the source object.
PurchaseItem item = bg.Items[0] as PurchaseItem;
object doubleValue;
object dateTimeValue;
// Get the proposed values for Price and OfferExpires.
bool priceResult = bg.TryGetValue(item, "Price", out doubleValue);
bool dateResult = bg.TryGetValue(item, "OfferExpires", out dateTimeValue);
if (!priceResult || !dateResult)
{
return new ValidationResult(false, "Properties not found");
}
double price = (double)doubleValue;
DateTime offerExpires = (DateTime)dateTimeValue;
// Check that an item over $100 is available for at least 7 days.
if (price > 100)
{
if (offerExpires < DateTime.Today + new TimeSpan(7, 0, 0, 0))
{
return new ValidationResult(false, "Items over $100 must be available for at least 7 days.");
}
}
return ValidationResult.ValidResult;
}
}