[置顶] silverlight/xap如何接收参数(13)

silverlight/xap如何接收参数?

silverlight不能象flash一样,直接以类似xxx.xap?name=123的方式传递参数,而是要用另一种方式实现:


html部分(注意高亮部分):

<object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%">
<param name="source" value="ClientBin/InitParams.xap?color=red"/>
<param name="onerror" value="onSilverlightError" />
<param name="background" value="white" />
<param name="minRuntimeVersion" value="3.0.40624.0" />
<param name="autoUpgrade" value="true" />
<param name="InitParams" value="name=jimmy.yang,age=30" />
<a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40624.0" style="text-decoration: none;">
<img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="获取 Microsoft Silverlight" style="border-style: none"/>
</a>
</object>

注:InitParams传递参数时,必须以x=y,a=b这样的键值对格式传入

cs部分:

App.Xaml.cs:

public partial class App : Application
{

IDictionary<string, string> _dic;

...

        private void Application_Startup(object sender, StartupEventArgs e)
        {
          _dic = e.InitParams;
            this.RootVisual = new MainPage(_dic);        
        }
...
注:这里用e.InitParams取得传入的参数,同时利用new MainPage(_dic)将参数传到需要的xaml中去


MainPage.Xaml.cs部分:


public partial class MainPage : UserControl
{
IDictionary<string, string> _params;

public MainPage()
{
    InitializeComponent();           
}

public MainPage(IDictionary<string, string> dicParam)
{
    InitializeComponent();
    _params = dicParam;

    StringBuilder sb = new StringBuilder();
    foreach (var item in _params)
    {
sb.Append(string.Format("key:{0} , value:{1}" + Environment.NewLine, item.Key, item.Value));
    }

    txtParam.Text = sb.ToString();
}
}

注:这里,我们重载了一个带参数的构造函数用于接受参数

更简单方法:

1)aspx端

 Response.Redirect("SLInterestTestPage.aspx?A=123&B=345");

  2)Silverlight端接收
            IDictionary<String, String> paras = HtmlPage.Document.QueryString;
            string s = paras["A"];
            string b = paras["B"];

注意:有时传递汉语会遇到乱码问题,解决方法是:把汉字进行Base64编码,接收时解码就不会有乱码问题了。

作者: 菩提树下的杨过
出处: http://yjmyzz.cnblogs.com

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