/// <summary>
/// 更新一条数据(所有字段)
/// </summary>
public int Update(DBHelper myHelperMySQL, Fm.Entity.shop_cart model, string strWhere)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update shop_cart set ");
strSql.Append(" Cartid = @Cartid , ");
strSql.Append(" UserId = @UserId , ");
strSql.Append(" ProductId = @ProductId , ");
strSql.Append(" CartNum = @CartNum ");
MySqlParameter[] parameters =
{
new MySqlParameter("@Cartid", model.Cartid),
new MySqlParameter("@UserId", model.UserId),
new MySqlParameter("@ProductId", model.ProductId),
new MySqlParameter("@CartNum", model.CartNum)
};
if (strWhere.Trim() != "")
{
strSql.Append(" where " + strWhere);
}
int rows = myHelperMySQL.ExecuteNonQuery(strSql.ToString(), parameters);
return(rows);
}
public void Add(Fm.Entity.shop_cart model)
{
DBHelper myHelperMySQL = new DBHelper();
myHelperMySQL.connectionStr = MySQLConfig.ConnStringCenter;
dal.Add(myHelperMySQL, model);
}
/// <summary>
/// 得到一个对象实体(List类型)，数据连接类用myHelperMySQL（非静态）
/// 表：MessageBoard
/// <param name="myHelperMySQL">myHelperMySQL实例（数据访问类）.</param>
/// <param name="Top">记录数.</param>
/// <param name="filedSelect">自定义字段.</param>
/// <param name="strWhere">条件.</param>
/// <param name="filedOrder">排序字段.</param>
/// <param name="parameters">参数(若条件中未使用参数可为null).</param>
/// </summary>
public List <Fm.Entity.shop_cart> GetList(DBHelper myHelperMySQL, int Top, string filedSelect, string strWhere, string filedOrder, MySqlParameter[] parameters)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select ");
//自定义字段
strSql.Append(" " + filedSelect);
strSql.Append(" FROM shop_cart a ");
if (strWhere.Trim() != "")
{
strSql.Append(" WHERE " + strWhere);
}
if (filedOrder.Trim() != "")
{
strSql.Append(" ORDER BY " + filedOrder);
}
if (Top > 0)
{
strSql.Append(" limit " + Top.ToString());
}
List <Fm.Entity.shop_cart> myList = new List <Fm.Entity.shop_cart>();
using (MySqlDataReader dr = myHelperMySQL.ExecuteReader(strSql.ToString(), parameters))
{
while (dr.Read())
{
Fm.Entity.shop_cart model = new Fm.Entity.shop_cart();
if (filedSelect.ToLower().Split(',').Where(x => x.Trim() == "a.cartid").Count() > 0)
{
if (dr["Cartid"].ToString() != "")
{
model.Cartid = int.Parse(dr["Cartid"].ToString());
}
}
if (filedSelect.ToLower().Split(',').Where(x => x.Trim() == "a.userid").Count() > 0)
{
model.UserId = dr["UserId"].ToString();
}
if (filedSelect.ToLower().Split(',').Where(x => x.Trim() == "a.productid").Count() > 0)
{
model.ProductId = dr["ProductId"].ToString();
}
if (filedSelect.ToLower().Split(',').Where(x => x.Trim() == "a.cartnum").Count() > 0)
{
if (dr["CartNum"].ToString() != "")
{
model.CartNum = int.Parse(dr["CartNum"].ToString());
}
}
myList.Add(model);
}
dr.Close();
}
return(myList);
}
/// <summary>
/// 增加一条数据
/// </summary>
public void Add(DBHelper myHelperMySQL, Fm.Entity.shop_cart model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into shop_cart(");
strSql.Append("Cartid,UserId,ProductId,CartNum");
strSql.Append(") values (");
strSql.Append("@Cartid,@UserId,@ProductId,@CartNum");
strSql.Append(") ");
MySqlParameter[] parameters =
{
new MySqlParameter("@Cartid", model.Cartid),
new MySqlParameter("@UserId", model.UserId),
new MySqlParameter("@ProductId", model.ProductId),
new MySqlParameter("@CartNum", model.CartNum)
};
myHelperMySQL.ExecuteNonQuery(strSql.ToString(), parameters);
}