如何为表单上的所有绑定调用UpdateSource?
答案 0 :(得分:12)
前段时间我为这项任务写了一堆帮手。
public static void UpdateAllBindingSources(this DependencyObject obj)
{
foreach (var binding in obj.GetAllBindings())
binding.UpdateSource();
}
public static IEnumerable<BindingExpression> GetAllBindings(this DependencyObject obj)
{
var stack = new Stack<DependencyObject>();
stack.Push(obj);
while (stack.Count > 0)
{
var cur = stack.Pop();
var lve = cur.GetLocalValueEnumerator();
while (lve.MoveNext())
if (BindingOperations.IsDataBound(cur, lve.Current.Property))
yield return lve.Current.Value as BindingExpression;
int count = VisualTreeHelper.GetChildrenCount(cur);
for (int i = 0; i < count; ++i)
{
var child = VisualTreeHelper.GetChild(cur, i);
if (child is FrameworkElement)
stack.Push(child);
}
}
}
然后你只需从你的窗口调用
this.UpdateAllBindingSources();就可以了。