如何为窗体上的所有绑定调用UpdateSource？

Question

如何为表单上的所有绑定调用UpdateSource？

Answer 1

前段时间我为这个任务写了一堆帮手。

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); 
     } 
    } 
} 

然后你只需要调用从窗口

this.UpdateAllBindingSources();

和你做。