Get record base on ID.

Question

I have use this code get record list base on id but face a issue 

string Categoryid = HttpContext.Request.Query["CatgeoryId"].SingleOrDefault();

var result = customEntityResult.Items.Select(x => (BlogPostDataModel)x.Model).Where(x => x.CategoryIds == Convert.ToInt32(Categoryid)).ToList());

 

Operator '==' cannot be applied to operands of type 'ICollection<int>' and 'int'--this issue face