sir ,plz tel me database connections in connectd network?

string SqlConnection = "data source = xyz; database = darabaseName; user id = xyz; password = xyz"; SqlConnection con = null; con = new SqlConnection(SqlConnection); con.Open(); string query = "Write a Query According to Ur Requirement"; SqlCommand cmd = new SqlCommand(query, con);

string SqlConnection = "data source = xyz; database = darabaseName; user id = xyz; password = xyz"; SqlConnection con = null; con = new SqlConnection(SqlConnection); con.Open(); string query = "Write a Query According to Ur Requirement"; SqlCommand cmd = new SqlCommand(query, con);