Я нашел статью для вас
http://www.opendocument4all.com/download/OpenOffice.net.pdf
И этот код дает вам представление;
XStorable2 xs = (XStorable2)mxDocument;
xs.storeToURL("file:///C:/oo.xls", new unoidl.com.sun.star.beans.PropertyValue[0]);
Я также нашел эту ссылку для вас
Создание документа OpenOffice Writer с помощью C #
Создание документа OpenOffice Calc с помощью C #
C # для OpenOffice Calc
РЕДАКТИРОВАТЬ :
using System;
using unoidl.com.sun.star.lang;
using unoidl.com.sun.star.uno;
using unoidl.com.sun.star.bridge;
using unoidl.com.sun.star.frame;
using unoidl.com.sun.star.text;
using unoidl.com.sun.star.beans;
XComponentContext oStrap = uno.util.Bootstrap.bootstrap();
XMultiServiceFactory oServMan = (XmultiServiceFactory) oStrap.getServiceManager();
XComponentLoader oDesk = (XComponentLoader) oServMan.createInstance("com.sun.star.frame.Desktop" );
string url = @"private:factory/swriter";
PropertyValue[] propVals = new PropertyValue[0];
XComponent oDoc = oDesk.loadComponentFromURL(url, "_blank", 0, propVals);
string docText = "This will be my first paragraph.\n\r";
docText += "This will be my second paragraph.\n\r";
And then this is written to the body of the document:
((XTextDocument)oDoc).getText().setString(docText);
string fileName = @"C:\Reports\test.odt";
fileName = "file:///" + fileName.Replace(@"\", "/");
And then the file is saved to disk:
((XStorable)oDoc).storeAsURL(fileName, propVals);
((Xcomponent)oDoc).dispose();