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我试图使用 Petapoco 更新一些日期时间字段，但更新总是失败，所以我查找了我的 SQL 分析器并找到了以下执行语句。

    exec sp_executesql N'UPDATE [db_Product] SET [aName] = @0, [aDesc] = @1, [EmpID] = @2, [UPCCode] = @3, [isActive] = @4, [isExpendable] = @5, [ProductCatID] = @6, [ProductSubCatID] = @7, [PromoCatID] = @8, 
    [Property1Name] = @9, [Property2Name] = @10, [RackPrice] = @11, [DiscountMethod] = @12, [DiscountAmount] = @13, [SellingPrice] = @14, [Cost] = @15, [CurrencyType] = @16, [qtyPerSaleMin] = @17, 
    [qtyPerSaleMax] = @18, [SupplierID] = @19, [BrandID] = @20, [StartDate] = @21, [EndDate] = @22, [MadeIn] = @23, [TakeStockName] = @24, [LifeCycleName] = @25, [ReOrderQty] = @26, [ReOrderPoint] = @27, 
    [ReOrderDays] = @28, [PreOrderDays] = @29, [aMemo] = @30, [Updator] = @31, [DateUpdate] = @32 WHERE [ProductID] = @33',N'@0 nvarchar(4000),@1 nvarchar(4000),@2 int,@3 nvarchar(4000),@4 int,@5 int,@6 int,@7 
    int,@8 int,@9 nvarchar(4000),@10 nvarchar(4000),@11 decimal(4,4),@12 nvarchar(4000),@13 decimal(4,4),@14 decimal(4,4),@15 decimal(4,4),@16 nvarchar(4000),@17 int,@18 int,@19 int,@20 int,@21 datetime,@22 
    datetime,@23 nvarchar(4000),@24 nvarchar(4000),@25 nvarchar(4000),@26 int,@27 int,@28 int,@29 int,@30 nvarchar(4000),@31 int,@32 datetime,@33 
    int',@0=N'testxxx',@1=N'',@2=0,@3=N'',@4=0,@5=0,@6=1,@7=0,@8=0,@9=N'Color',@10=N'Size',@11=0,@12=N'%',@13=0,@14=0,@15=0,@16=N'TWD',@17=0,@18=0,@19=0,@20=0,

@21=''2013-01-20 12:28:00:000'',@22=''2063-01-20 12:28:00:000'', <--problem

@23=N'TW ',@24=N'週盤',@25=N'新品',@26=1,@27=1,@28=3,@29=1,@30=N'',@31=0,

@32=''2013-02-04 02:45:47:640'' <----problem

,@33=1

出于某种原因，所有日期时间字段都有''，因此会导致更新错误。

编辑：C# 代码，BAL

public int Update(int _id, ProductManager _M)
{
    int result = _M.Product.UpdateByID(_id, _M.Product);

    return result;

}

C# 代码，DAL

public virtual int UpdateByID(int _id, db_Product data)
{
    data.DateUpdate = DateTime.Now;
     using (var db = new ConnClass().ConnDB())
     {
         var result = db.Update(data, _id);
         return result;
     }
}

BAL _M.Product.UpdateByID(_id, _M.Product); 将更新发送到 DAL 代码以进行更新。我检查了我的ProductManager _M中的值，dateTime 值是有效的。

Petapoco 执行命令

    UPDATE [db_Product] SET [aName] = @0, [aDesc] = @1, [EmpID] = @2, [UPCCode] = @3, [isActive] = @4, [isExpendable] = @5, [ProductCatID] = @6, [ProductSubCatID] = @7, 
[PromoCatID] = @8, [Property1Name] = @9, [Property2Name] = @10, [RackPrice] = @11, [DiscountMethod] = @12, [DiscountAmount] = @13, [SellingPrice] = @14, [Cost] = @15, [CurrencyType] = @16, [qtyPerSaleMin] = @17, [qtyPerSaleMax] = @18, [SupplierID] = @19, [BrandID] = @20, 
[StartDate] = @21, [EndDate] = @22, [MadeIn] = @23, [TakeStockName] = @24, [LifeCycleName] = @25, [ReOrderQty] = @26, [ReOrderPoint] = @27, [ReOrderDays] = @28, [PreOrderDays] = @29, 
[aMemo] = @30, [Updator] = @31, [DateUpdate] = @32 WHERE [ProductID] = @33

我已经花了几天时间调试这个有趣的结果......

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1 回答 1

1

Petapoco 使用 ADO.net 运行该UPDATE语句ExecuteNonQuery()并返回此函数返回的值。

该函数的文档指出：

对于 UPDATE、INSERT 和 DELETE 语句，返回值是受命令影响的行数。当正在插入或更新的表上存在触发器时，返回值包括受插入或更新操作影响的行数以及受一个或多个触发器影响的行数。对于所有其他类型的语句，返回值为 -1。如果发生回滚，则返回值也是 -1。

资料来源：MSDN

于 2013-03-27T16:41:12.737 回答