LINQ-to-SQL load keyword from variable - linq-to-sql

Question

public IQueryable<ArticleDisplay> SearchNumberOfArticles(int articleNr, string order)
var result = (
from category in db.ArticleCategories
join article in db.Articles on category.CategoryID equals article.CategoryID
orderby article.Date order
select new ArticleDisplay
{
CategoryID = category.CategoryID,
CategoryTitle = category.Title,
ArticleID = article.ArticleID,
ArticleTitle = article.Title,
ArticleDate = article.Date,
ArticleContent = article.Content
}
).Take(articleNr);
In PHP this would work, but in C# it doesn't. So, how to load keyword from variable and "print" it inside query? Here is order suppose to be replaced with descending or ascending.
Thanks

Answer 1

You can use an if statement
IQueryable<ArticleDisplay> SearchNumberOfArticles(int articleNr, string order)
{
................
var articles = from category in db.ArticleCategories
join article in db.Articles
on category.CategoryID equals article.CategoryID
select article;
if (string.IsNullOrEmpty(order) || order == "ascending" || order = "asc")
{
articles = articles.OrderBy(a => a.Date).Take(articleNr);
}
else
{
articles = articles.OrderByDescending(a => a.Date).Take(articleNr);
}
.............
}