Comments by gunjalgajjar (Top 1 by date)

@{ var categories = new List<int>() { 6, 7 };

var parameters = new RouteValueDictionary();

for (int i = 0; i < categories.Count; ++i)
{
parameters.Add("category[" + i + "]", categories[i]);
}
}
< a href="@Url.Action(" test","home",="" parameters)"=""> click

Pass category as list of string

public ActionResult Test(List<string> category)
{
return View();
}