Pass in an Expression to linq's Select

Question

This is linq-to-sql

I have a lot of different classes all doing the same query, but projecting the results slightly differently. Ideally I\'d like to b

Answer 1

If I understand your question correctly you can use this code:

first declare a method for selecting your data like this:

public List FindAll(Func selector) where TResult : class
    {
        using (RepositoryDataContext = new DataClasses1DataContext())
        {
                return RepositoryDataContext.Regions.Select(selector).ToList();

        }
    }

then you can build your select statement like this:

Func select = r => new SelectAllRegion
        {
            RegionID = r.RegionID,
            RegionDescription = r.RegionDescription
        };

my SelectAllRegion :

 public class SelectAllRegion
{
    public SelectAllRegion()
    {
    }
    public int RegionID { get; set; }
    public string RegionDescription { get; set; }
}

and region is Region table in northwing.I hope this help you