query for inserting data in sql

#region  Hàm thêm Product vào chi tiết order
    public static void InsertCTOrder(int OrderID, int ProID, int Quantity, string UnitPrice,int ktra,SqlConnection sqlconn)
    {
        string strInSert = "INSERT INTO OderDetail VALUES (@OrderID, @ProID, @Quantity, @UnitPrice)";
        SqlCommand sqlcmd = new SqlCommand(strInSert, sqlconn);
        sqlcmd.Parameters.AddWithValue("@OrderID", OrderID);
        sqlcmd.Parameters.AddWithValue("@ProID", ProID);
        sqlcmd.Parameters.AddWithValue("@Quantity", Quantity);
        sqlcmd.Parameters.AddWithValue("@UnitPrice", UnitPrice);
        try
        {
            sqlconn.Open();
            sqlcmd.ExecuteNonQuery();
            sqlconn.Close();
            ktra = 0;
        }
        catch (Exception )
        {
            sqlconn.Close();
            ktra = 1;           
        }
    }