在WPF中创建繁忙动画的最简单方法

Question

I mentioned that there is no standard busy control in WPF. So what's the easiest way to display animated busy circle (not progress bar) such as your browser displays when loading a page ?

Please if you suggest downloading control from internet make sure that this control is for free and with no licence restriction (such as I would be forced to GPL my application if I use it).

Thank you in advance

Answer 1

There's also Sacha Barber's Circular Progress Bar . It's licensed under the Code Project Open License.

Answer 2

BizzySpinner 2 - WPF旋转忙状态指示器（带源）

Answer 3

You can also use animated gifs, compare eg this site: http://www.loadinfo.net/ . Different colors, forms, frames per second, transparant background are generated for you.

Then you add the WPF Animated GIF as a reference to your project.

Make a usercontrol with <Image gif:ImageBehavior.AnimatedSource="Images/animated.gif" /> as its content and give the usercontrol a dependencyproperty (DP) IsBusy with a callback to a method in the usercontrol:

`public static readonly DependencyProperty IsBusyProperty = DependencyProperty.Register("IsBusy", typeof(bool), typeof(SpinProgress), new FrameworkPropertyMetadata(new PropertyChangedCallback(OnIsBusyChangedCallBack)));`

In this method the animated gif's Play() and 'Pause()' methods can be executed.
Bind the usercontrol's IsBusy property to the view-model.

Or - when appropiate - ignore the DP and the Play() and Pause() methods and bind the Visibility property to the view-model.

Answer 4

You can implement processing wheel while your application is busy. although WPF do not support any GIF images so you've to use animation for this. below is a good link for FrameAnimation spin wheel.

http://www.codeproject.com/Articles/29545/FrameBasedAnimation-Animating-multiple-properties

Answer 5

I recently uploaded one to codeplex. It allows you to customize it (even in runtime). You can download it from here . Sample demo also uploaded.

Answer 6

我最近实现了一个看起来像iPhone繁忙指示器， 这里解释。