exploring-dapper-iqueryable-goodness-sample.cs

public Person[] Get(SearchCriteria searchCriteria)
{
    using(var dbContext = new MyDbContext())
    {
        var query = dbContext.Persons;        
        if(!string.IsNullOrWhitespace(searchCriteria.FirstName))
        {
            query = query.Where(x => x.FirstName.Contains(searchCriteria.FirstName)); 
        }        
        if(!string.IsNullOrWhitespace(searchCriteria.Zipcode))
        {
            query = query.Where(x => x.Zipcode == searchCriteria.Zipcode); 
        }        
        return query.ToArray();
    }
}