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我有以下错误,当我呼吁我的DataAdapter的更新方法,删除某些行后:ADO.NET的DataAdapter
DELETE语句冲突与基准约束“FK_Eleve_Classe”。冲突发生在数据库“hogwarts”,表“dbo.Eleve”,列“FK_classID”中。 该声明已被终止。
事实上,定义了一个外键,但由于主键在“类”表中,为什么它不允许我在“eleve”中删除我的行?
也许它尝试删除级联? (再怎么改变呢?)
编辑1:SQL
CREATE TABLE [dbo].[Classe](
[id] [int] NOT NULL,
CONSTRAINT [PK_Classe] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
CREATE TABLE [dbo].[Eleve](
[id] [int] NOT NULL,
[nom] [varchar](50) NULL,
[prenom] [varchar](50) NULL,
[birthdate] [date] NULL,
[FK_classID] [int] NULL,
CONSTRAINT [PK_Eleve] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
ALTER TABLE [dbo].[Eleve] WITH CHECK ADD CONSTRAINT [FK_Eleve_Classe] FOREIGN KEY([FK_classID])
REFERENCES [dbo].[Classe] ([id])
编辑2:一些C#代码
DataSet ds = new DataSet();
c.Open(); // SqlConnection
SqlDataAdapter da = new SqlDataAdapter("Select * from eleve", (SqlConnection)c);
da.Fill(ds, "eleves");
da.SelectCommand = new SqlCommand("select * from cours", (SqlConnection)c);
da.Fill(ds, "COURS");
da.SelectCommand = new SqlCommand("select * from professeur", (SqlConnection)c);
da.Fill(ds, "PROF");
da.SelectCommand = new SqlCommand("select * from classe", (SqlConnection)c);
da.Fill(ds, "CLASSE");
c.Close();
ds.Tables["eleves"].Rows[0].Delete();
编辑3:删除
这里是我删除我的表中的元素的方式:
ds.Tables["eleves"].Rows[0].Delete();
除了这个,我还必须手动设置deleteCommand吗?
是的,霍格沃茨因为我拍样片来解释这一个有趣的方式;)
感谢,
风筝
`hogwarts`数据库,大声笑 – hunter 2010-11-22 18:23:29
你可以发布你的SQL吗? – hunter 2010-11-22 18:24:39