FUNCTION FOR READING DATA IN C# VB.NET

FUNCTION FOR READING DATA IN C# VB.NET
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using System.Data.SqlClient;// NAME SPACE FOR SQL CONNECTION
using System.Collections;
namespace WindowsApplication1
{

class Myclass
{
SqlConnection con = new SqlConnection("server=.;trusted_connection=true;database=RVDTEST");// CONNECTION STRING

public DataTable call(string call)// FUNCTION FOR READING DATA
{
SqlDataAdapter da = new SqlDataAdapter(call, con);
DataTable dt = new DataTable();
da.Fill(dt);
return dt;
}


}
}