C# INameScope.FindName方法代码示例

    /// <summary>
    ///     Finds a BeginStoryboard with the given name, following the rules
    /// governing Storyboard.  Returns null if not found.
    /// </summary>
    /// <remarks>
    ///     If a name scope is given, look there and nowhere else.  In the
    /// absense of name scope, use Framework(Content)Element.FindName which
    /// has its own complex set of rules for looking up name scopes.
    ///
    ///     This is a different set of rules than from that used to look up
    /// the TargetName.  BeginStoryboard name is registered with the template
    /// INameScope on a per-template basis.  So we look it up using
    /// INameScope.FindName().  This is a function completely different from
    /// Template.FindName().
    /// </remarks>
    internal static BeginStoryboard ResolveBeginStoryboardName(
        string targetName,
        INameScope nameScope,
        FrameworkElement fe,
        FrameworkContentElement fce)
    {
        object          namedObject = null;
        BeginStoryboard beginStoryboard = null;

        if( nameScope != null )
        {
            namedObject = nameScope.FindName(targetName);
            if( namedObject == null )
            {
                throw new InvalidOperationException(
                    SR.Get(SRID.Storyboard_NameNotFound, targetName, nameScope.GetType().ToString()));
            }
        }
        else if( fe != null )
        {
            namedObject = fe.FindName(targetName);
            if( namedObject == null )
            {
                throw new InvalidOperationException(
                    SR.Get(SRID.Storyboard_NameNotFound, targetName, fe.GetType().ToString()));
            }
        }
        else if( fce != null )
        {
            namedObject = fce.FindName(targetName);
            if( namedObject == null )
            {
                throw new InvalidOperationException(
                    SR.Get(SRID.Storyboard_NameNotFound, targetName, fce.GetType().ToString()));
            }
        }
        else
        {
            throw new InvalidOperationException(
                SR.Get(SRID.Storyboard_NoNameScope, targetName));
        }

        beginStoryboard = namedObject as BeginStoryboard;

        if( beginStoryboard == null )
        {
            throw new InvalidOperationException(SR.Get(SRID.Storyboard_BeginStoryboardNameNotFound, targetName));
        }

        return beginStoryboard;
    }

        private TargetKey GetClockTarget(AnimationTimelineClock clock, FrameworkElement containingObject, INameScope nameScope)
        {
            DependencyObject root = GetTarget(clock.Timeline);

            if (root == null)
            {
                string targetName = GetTargetName(clock.Timeline);

                if (targetName.IsNullOrEmpty())
                {
                    root = containingObject;
                }
                else
                {
                    root = nameScope.FindName(targetName) as DependencyObject;

                    if (root == null)
                    {
                        throw new Granular.Exception("Can't find Storyboard.TargetName \"{0}\" for element \"{1}\"", targetName, containingObject);
                    }
                }
            }

            PropertyPath propertyPath = GetTargetProperty(clock.Timeline);

            DependencyObject target;
            DependencyProperty targetProperty;
            return TryGetPropertyPathTarget(root, propertyPath, out target, out targetProperty) && target is IAnimatable ? new TargetKey((IAnimatable)target, targetProperty) : null;
        }