silverlight-4 com-interop无法调用非委托类型

Question

此silverlight代码抛出错误“无法调用非委托类型”

        var WshShell = AutomationFactory.CreateObject("WScript.Shell");
        var WshSysEnv = WshShell.Environment("SYSTEM");
        var foo = WshSysEnv("APPDATA");

如何获取环境变量？

编辑：
@ paulsm4 - 这适用于silverlight ......

        var WshShell = AutomationFactory.CreateObject("WScript.Shell");
        var appData = WshShell.ExpandEnvironmentStrings("%APPDATA%");
        MessageBox.Show(appData);

Answer 1

假设WSH，这样的事情怎么样：

Set wshShell = CreateObject( "WScript.Shell" )
WScript.Echo wshShell.ExpandEnvironmentStrings( "%APPDATA%" )
wshShell = Nothing