c# linq unique values from list code example

Example 1: c# linq select only unique values from list

var uniq = allvalues.GroupBy(x => x.Id).Select(y=>y.First()).Distinct();

Example 2: c# linq select only unique values from list

var uniqueCategories =  repository.GetAllProducts()
                                  .Select(p=>p.Category)
                                  .Distinct();

Example 3: how to get unique list in c#

using(var dataModel = new DataModel())
{
  var classes = dataModel.Attributes.Where(a => a.Field == "Class").Select(a => a.Key).Distinct().ToList();
}