為什麽我在用c#操作時，紅色部份代碼總是報：傳回的引數具有無效的型別。

using unoidl.com.sun.star.lang;
using unoidl.com.sun.star.beans;
using unoidl.com.sun.star.uno;
using unoidl.com.sun.star.frame;
using unoidl.com.sun.star.table;
using unoidl.com.sun.star.sheet;
using unoidl.com.sun.star.container;

XComponentContext xContext = uno.util.Bootstrap.bootstrap();

            XMultiServiceFactory xFactory = (XMultiServiceFactory)xContext.getServiceManager();

            XComponentLoader xLoader = (XComponentLoader)xFactory.createInstance("com.sun.star.frame.Desktop");

           // PropertyValue[] myArgs = new PropertyValue[1];
           // myArgs[0] = new PropertyValue();
           // myArgs[0].Name = "Hidden";           
            XComponent xComponent = xLoader.loadComponentFromURL("file:///C:/江西帳號(B0F6).ods", "_blank", 0,new PropertyValue[1]);

            XSpreadsheetDocument xSheetDocument = (XSpreadsheetDocument)xComponent;

            XSpreadsheets xSheets = xSheetDocument.getSheets();

            XIndexAccess xAccess = (XIndexAccess)xSheets;
           
            XSpreadsheet xSheet = (XSpreadsheet)xAccess.getByIndex(0).Value;

不知道該怎麼解決，有哪位知道的大俠告訴我一下，是什麽原因，謝謝了！