how to split string seperated by commas & insert into Sql Database in asp.net c#

string RValue = "1233,frrrr,rrrryy";
         string[] VExist = RValue.Split(',');
         foreach (string item in VExist)
         {
             using (
               SqlConnection con =
                   new SqlConnection(""))
             {


                 using (SqlCommand cmd = new SqlCommand("usp_test", con))
                 {
                     cmd.CommandType = CommandType.StoredProcedure;
                     cmd.Parameters.AddWithValue("@tst", VExist[0]);
                     cmd.Parameters.AddWithValue("@tst2", VExist[1]);
                     cmd.Parameters.AddWithValue("@tst2", VExist[2]);
                     cmd.ExecuteNonQuery();

                 }
             }
         }