[转载]Implementing a simple Silverlight Control
Implementing a simple Silverlight Control文章作者：Phil Curnow
信息来源：邪恶八进制信息安全团队（[url]www.eviloctal.com[/url]）
This article shows how to implement a simple button control using Silverlight 1.1 and C#.
I am sure that many of you have read about Silverlight, the latest offering from Microsoft promising the ability to deliver rich interactive applications and media. Silverlight 1.1 Alpha has just been released and with this in mind, I decided to download all the tools required to start using Silverlight. To be honest, I have not spent much time looking into Silverlight 1.0; I just couldn't bring myself to start coding heavily in JavaScript. Version 1.1 gives the ability to perform the 'behind the scenes' coding in languages such as C# and VB.NET (plus others).
Having downloaded Silverlight 1.1, Visual Studio 2008 Beta 2 and Expression Blend, I started looking at development. One thing that becomes apparent very quickly is the lack of any form of controls, this is after all an Alpha release and I am sure this will change very soon. You can download the Silverlight 1.1 SDK which does provide controls such as a button, scrollbar, list box, etc. Ever the developer, I decided to have a go at implementing my own simple button control and this article is the result of my development work so far.
The Visual Studio solution file accompanying this article was produced using Visual Studio 2008 Beta 2. I am using the Standard Edition, which weighs in at around 700+ Mb as an ISO file. It is possible to use Visual Studio 2005 with a little tweaking of a solution file, information on how to do this is readily available on the net.
The Button Control
It is fair to say that this is a very simple control; it's not a particularly pretty looking button. The sole purpose of the exercise was to see how complex implementing your own control was. The button has a rollover effect and animates upon being clicked, this to me is good enough for a simple button.
There are two elements to this button, the XAML which defines the look of the button (rectangles and colours, etc) and the 'code behind' the XAML. I used Expression Blend to produce the XAML and then tweaked it by hand. I am not going to show the whole XAML for the button within the article as there is a fair amount of it, but I will be explaining the pertinent parts of it.
The XAML
I generated the layout of the button first, this obviously gave me something to work with when adding functionality, such as events, etc. Below is the XAML for defining the button rectangle.
<Rectangle Width="180" Height="34
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