How to create a Join using petapoco MVC4 - mysql

Question

I need to join 2 table using petapoco MVC4
my table cong shown below
[TableName("District")]
[PrimaryKey("nDistrictID")]
public class District
{
public int nDistrictID { get; set; }
public string cDistrictName { get; set; }
public bool bActive { get; set; }
public int nStateID { get; set; }
}
And state table
[PetaPoco.TableName("States")]
[PetaPoco.PrimaryKey("nStateID")]
public class States
{
public int nStateID { get; set; }
public string cStateName { get; set; }
}
I need a query in this form
select d.cDistrictName,s.cStateName, d.nStateID from District
d inner join States s on d.nStateID=s.nStateID

Answer 1

I am assuming you have already a dataContext which contains 2 DbSet of each classes. Regarding that you can use:
Regarding the result you expect, you can create a new class which matches with the result:
public class DistrictWithState
{
public string cDistrictName {get;set;}
public string cStateName {get; set;}
public int nStateId {get;set;}
}
Then in your Action:
var dataContext = new PetaPoco.Database("mysql");
var sql="select d.cDistrictName,s.cStateName, d.nStateID from District
d inner join States s on d.nStateID=s.nStateID";
var districts = db.Fetch<DistrictWithState>(sql);
return view(districts);
There is another solution using the dynamic keyword. But just start with that solution above. It should work. I hope it will help