Connection to SQL Database Template

using (IDbConnection connection = new System.Data.SqlClient.SqlConnection (Helper.CnnVal("SampleDB")) )

?{

?}

PS:

public static class Helper

? ? {

? ? ? ? public static string CnnVal(string name)

? ? ? ? {

? ? ? ? ? ? return ConfigurationManager.ConnectionStrings[name].ConnectionString;

? ? ? ? }

? ? }