Dapper: How to return selected columns? - dapper

Question

public List<Customer> getCustomer()
{
using (IDbConnection con=DapperConnection())
{
string sql = "Select * from Customer";
return con.Query<Customer>(sql).Select(x => new { x.Id, x.LastName })
.ToList();
}
}
class Customer
{
public string Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set;}
}
Does anyone know how to return specific columns using dapper? What I am trying to achieve is to return just the Id and LastName as List so that I can bind them to my controls.

Answer 1

Unsure exactly what you mean but surely you should return the customer object instead of an anonymous type, or at least make a smaller version of the customer object to be used by the controls
public List<Customer> getCustomers()
{
using (IDbConnection con = DapperConnection())
{
string sql = "Select * from Customer";
return con.Query<Customer>(sql).ToList();
}
}
Or if you dont like the overhead of returning the full customer object
public List<CustomerBase> getCustomers()
{
using (IDbConnection con = DapperConnection())
{
string sql = "Select * from Customer";
return con.Query<CustomerBase>(sql).ToList();
}
}
public class CustomerBase
{
public string Id { get; set; }
public string LastName { get; set; }
}
public class Customer: CustomerBase
{
public string FirstName { get; set; }
//Other props...
}