silverlight+wcf 项目 silverlight获得web程序的参数

silverlight 可以通过属性InitParams 获得参数，如果参数是动态的需要web程序传递的，具体操作如下：

web程序后台：AppID,USERID需要的参数

this.frmReport.Attributes["src"] = String.Format("../../SilverlightApplicationTestPage.aspx?USERNAME={0}&USERID={1}", "张三", "123456");

silverlight项目会生产一个测试页面文件：SilverlightApplicationTestPage.aspx，修改之后的代码如下：

<%@ Page Language="c#" AutoEventWireup="true" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>SilverlightApplication</title>
    <style type="text/css">
        html, body
        {
            height: 100%;
            overflow: auto;
        }
        body
        {
            padding: 0;
            margin: 0;
        }
        #silverlightControlHost
        {
            height: 100%;
            text-align: center;
        }
    </style>
    <script type="text/javascript" src="Silverlight.js"></script>
   <script type="text/javascript">
       function onSilverlightError(sender, args) {
           var appSource = "";
           if (sender != null && sender != 0) {
               appSource = sender.getHost().Source;
           }

var errorType = args.ErrorType;
var iErrorCode = args.ErrorCode;

           if (errorType == "ImageError" || errorType == "MediaError") {
               return;
           }

var errMsg = "Silverlight 应用程序中未处理的错误 " + appSource + " ";

           errMsg += "代码: " + iErrorCode + "    ";
           errMsg += "类别: " + errorType + "       ";
           errMsg += "消息: " + args.ErrorMessage + "     ";

           if (errorType == "ParserError") {
               errMsg += "文件: " + args.xamlFile + "     ";
               errMsg += "行: " + args.lineNumber + "     ";
               errMsg += "位置: " + args.charPosition + "     ";
           }
           else if (errorType == "RuntimeError") {
               if (args.lineNumber != 0) {
                   errMsg += "行: " + args.lineNumber + "     ";
                   errMsg += "位置: " + args.charPosition + "     ";
               }
               errMsg += "方法名称: " + args.methodName + "     ";
           }

throw new Error(errMsg);
}

//加载参数
       function WindOnLoad() {
           var xmlDoc;
           var initParamsString = '';
           var url = location.href;
           var paraString = url.substring(url.indexOf("?") + 1, url.length).split("&");
           for (var i = 0; i < paraString.length; i++) {
               initParamsString += paraString[i];
               if (i != paraString.length) {
                   initParamsString += ",";
               }
           }

SetInitParams(initParamsString);
}

//构造页面
       function SetInitParams(initParamsString) {
           var silverlightControlHtml = ' <object id="silverlightControl" data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%">';
           silverlightControlHtml += '<param name="source" value="ClientBin/SilverlightApplication2.xap" />';
           silverlightControlHtml += '<param name="onerror" value="onSilverlightError" />';
           silverlightControlHtml += '<param name="minRuntimeVersion" value="5.0.61118.0" />';
           silverlightControlHtml += ' <param name="autoUpgrade" value="true" />';
           silverlightControlHtml += '<param id="InitParams" name="InitParams" value="' + initParamsString + '"/>';

silverlightControlHtml += '</object>';
silverlightControlHtml += '<iframe id="_sl_historyFrame" style="visibility: hidden; height: 0; 0; border: 0px"></iframe>';

           document.getElementById("silverlightControlHost").innerHTML = silverlightControlHtml;
       }
       window.onload = WindOnLoad;
    </script>
</head>
<body>
    <div id="silverlightControlHost">
    </div>
</body>
</html>

silverlight程序会生成app.xaml 文件作为起始页面，代码如下：

public App()
        {
            this.Startup += this.Application_Startup;
            this.UnhandledException += this.Application_UnhandledException;

InitializeComponent();

}

//在Application_Startup方法中得到web程序的参数，具体代码如下：

private void Application_Startup(object sender, StartupEventArgs e)
        {
            paras = e.InitParams;
            USERNAME= e.InitParams["USERNAME"];
            USERID = e.InitParams["USERID"];
            this.RootVisual = new BeginHome(USERNAME, USERID);//跳转到其他页面
        }

第二种:

在Application_Startup方法中得到web程序的参数，具体代码如下：

private void Application_Startup(object sender, StartupEventArgs e){

IDictionary<String, String> paras = System.Windows.Browser.HtmlPage.Document.QueryString;
AppID = paras["APPID"];
strChartName = paras["ChartName"];

…………}