I am very new bee for Dapper ORM, i am just trying to create a class library for Business logic with Dapper. I have Install the Dapper into the class Library with Nuget. And i can see the reference in the references for Dapper(1.50.2). Now i write following code, in which i am not able to access "Query".
namespace ClassLibrary1
{
public class Class1
{
static IDbConnection db2 = new SqlConnection(ConfigurationManager.ConnectionStrings["SqlServerConnString"].ConnectionString);
public Class1()
{
}
public List<dynamic> GetRecords()
{
string query = "select * from contacts";
return (List<dynamic>)db2.Query<dynamic>(query);
}
}
}
Please help me.. and tell me what i am doing wrong.
You need to include the extensions on the Dapper
namespace. Just add:
using Dapper;
On top of your file
Apart from that, a more correct way to write the class
namespace ClassLibrary1 {
using Dapper;
public class Class1 {
private static readonly string connectionString = ConfigurationManager.ConnectionStrings["SqlServerConnString"].ConnectionString;
public Class1() {}
public List<dynamic> GetRecords() {
string query = "select * from contacts";
using (var db = new SqlConnection(connectionString))
return db.Query<dynamic>(query).AsList();
}
}
}
This handles dispose of the SqlConnection
object and .AsList
method saves from typecasting IEnumerable<>
to List<>
.
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