Sqlcommand not run more than 60 times in a foreach loop

See more:

C#

SQL

hi i have datagridview in our form that have 360 rows,
i want insert this rows to database but Sqlcommand not run more than 60 times in a foreach loop

this my code:

try
            {

                con.Open();
                foreach (DataGridViewRow row in dataGridViewX1.Rows)
                {
                    SqlCommand com = new SqlCommand();
                    com.Connection = con;
                    com.CommandType = CommandType.StoredProcedure;
                    com.CommandText = "add_data_to_calander";
                    com.Parameters.AddWithValue("@date", row.Cells[2].Value.ToString());
                    com.Parameters.AddWithValue("@dayinweek", row.Cells[1].Value.ToString());
                    com.Parameters.AddWithValue("@dayinyear", row.Cells[0].Value.ToString());
                    var _value = row.Cells[3].Value;
                    if (_value != null && (bool)_value)
                        com.Parameters.AddWithValue("@isdisable", "1");
                    else
                        com.Parameters.AddWithValue("@isdisable", "0");
                    counter++;
                    if (con.State == ConnectionState.Closed)
                        con.Open();
                    com.ExecuteNonQuery();
                    com.Parameters.Clear();
                }
            }
            catch (Exception)
            {
            }
            finally { con.Close(); }
            MessageBox.Show(counter.ToString());

finally counter value is 60.