リストボックスが再描画されたときにイベントを発生させる方法は誰でも知っています。1つの列のコンテンツを条件付きでマスクしようとしていますが、リストボックスが描画される前に条件付きチェックが実行されているようです。したがって、マスクするものがないため、マスクは機能しません。
/// <summary>
/// Locks or unlocks the quantity textbox based on 100% flour and activates or deactivate weights
/// </summary>
private void activatePieceQuantity()
{
if (isFlour100Percent())
{
((TextBox)NumberOfItemsTextBox as TextBox).IsEnabled = true;
weightsActive(true);
}
else
{
((TextBox)NumberOfItemsTextBox as TextBox).IsEnabled = false;
weightsActive(false);
}
}
/// <summary>
/// Send controls to search with control name and activate or deactivate flag
/// </summary>
/// <param name="activate"></param>
private void weightsActive(bool activate)
{
int locationInList = 0;
foreach (RecipieIngredient ri in activeRecipie.RecipieIngredients)
{
SearchTree(this.IngredientsListBox.ItemContainerGenerator.ContainerFromIndex(locationInList), "QuanityWeight", activate);
locationInList++;
}
}
/// <summary>
/// Find all weight related objects in the ingredients list and set the visibility accordingly
/// </summary>
/// <param name="targetElement"></param>
/// <param name="flagName">Derived from the Tag of the textbox</param>
/// <param name="enableFlag"></param>
private void SearchTree(DependencyObject targetElement, string flagName, bool enableFlag)
{
if (targetElement == null)
return;
var count = VisualTreeHelper.GetChildrenCount(targetElement);
if (count == 0)
return;
for (int i = 0; i < count; i++)
{
var child = VisualTreeHelper.GetChild(targetElement, i);
if (child is TextBlock)
{
TextBlock targetItem = (TextBlock)child;
if (targetItem.Name == flagName)
if (enableFlag)
{
((TextBlock)targetItem as TextBlock).Visibility = Visibility.Visible;
return;
}
else
{
((TextBlock)targetItem as TextBlock).Visibility = Visibility.Collapsed;
}
}
else
{
SearchTree(child, flagName, enableFlag);
}
}
}