Hi there, I am working in a partial view and I need to get video lectures in a partial view. Following is query that is working fine

@using YouTube
@using YouTube.Models   
@inherits Umbraco.Web.Mvc.UmbracoTemplatePage
@{
    var homePage = CurrentPage.AncestorsOrSelf(1).First();  
    var lectureVideos = homePage.Descendants("videoLecture").Where("Visible").OrderBy("publishDate desc, createDate desc");     
}

But I need to filter the videos based on their description property named as "lectureDescription", a rich text editor. I want to exclude those videos having no description. I have run the following query but it's not working and its giving no result at all.

@using YouTube
@using YouTube.Models   
@inherits Umbraco.Web.Mvc.UmbracoTemplatePage
@{
    var homePage = CurrentPage.AncestorsOrSelf(1).First();  
    var lectureVideos = homePage.Descendants("videoLecture").Where("Visible").Where("lectureDescription != @0 && lectureDescription != @1",null,String.Empty).OrderBy("publishDate desc, createDate desc");
}

Can someone point out and guide me into right direction, I will be thankful.