執行update-database時出現錯誤:「每個表中的列名必須是唯一的。」表'dbo.OrderForms'中的列名'OrderRecieveDate'被指定不止一次。」我已經嘗試了所有我能想到的方法來修復它,但到目前爲止還沒有任何結果。之前,我可以通過我創建的網站添加/更新/刪除表格中的行,但現在該功能看起來並不奏效。我甚至無法讓數據庫在此時添加我的種子數據。錯誤:每個表中的列名必須是唯一的
我的上下文/型號文件:
public class OrderFormContext : DbContext
{
public DbSet<OrderForm> OrderForms { get; set; }
}
public class OrderForm
{
[Key, Display(Name= "Order ID")]
[ScaffoldColumn(false)]
public int OrderID { get; set; }
private DateTime _date = DateTime.Today;
[Display(Name = "Date Posted")]
[ScaffoldColumn(false)]
public DateTime OrderPostDate
{
get { return _date; }
set { _date = value; }
}
[EnumDataType(typeof(PersonReqID)),Display(Name = "Person Requesting")]
public PersonReqID PersonReq { get; set; }
[StringLength(100), Display(Name = "Grant")]
public string GrantID { get; set; }
[StringLength(10000), Display(Name = "Product Description"), DataType(DataType.MultilineText)]
public string ItemDescription { get; set; }
[StringLength(100), Display(Name = "Quantity")]
public string ItemQuantity { get; set; }
[StringLength(100), Display(Name = "Price")]
public string UnitPrice { get; set; }
[StringLength(100), Display(Name = "Company")]
public string CompanyID { get; set; }
[StringLength(100), Display(Name = "Catalog #")]
public string CatalogNum { get; set; }
[ScaffoldColumn(false)]
[Range(typeof(DateTime), "1/1/1111", "1/1/3000", ErrorMessage = "Please provide a date.")]
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:d}")]
public DateTime OrderMadeDate { get; set; }
[ScaffoldColumn(false)]
[Range(typeof(DateTime), "1/1/1111", "1/1/3000", ErrorMessage = "Please provide a date.")]
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:d}")]
public DateTime OrderRecieveDate { get; set; }
[ScaffoldColumn(false)]
[EnumDataType(typeof(PersonRecID)), Display(Name = "Person Recieving")]
public PersonRecID PersonRec { get; set; }
[ScaffoldColumn(false)]
[StringLength(100), Display(Name = "Item Location")]
public string ItemLoc { get; set; }
}
我Configuration.cs文件:
context.OrderForms.AddOrUpdate(
new OrderForm
{
OrderID=1,
OrderPostDate=DateTime.Now,
PersonReq=PersonReqID.Jake,
GrantID="NASA",
ItemDescription="Grenades",
ItemQuantity="100",
UnitPrice="1.50",
CompanyID="Grenades UNLMTD",
CatalogNum="G1001",
PersonRec=PersonRecID.Ajit,
ItemLoc="Freezer"
}
);
context.SaveChanges();
最後我xxxxxxx_initial.cs遷移文件:
public override void Up()
{
AddColumn("dbo.OrderForms", "OrderRecieveDate", c =>
c.DateTime(nullable: false, defaultValue: new DateTime(1000, 1, 1)));
AddColumn("dbo.OrderForms", "OrderMadeDate", d =>
d.DateTime(nullable: false, defaultValue: new DateTime(1000, 1, 1)));
}
public override void Down()
{
DropColumn("dbo.OrderForms", "OrderRecieveDate");
DropColumn("dbo.OrderForms", "OrderMadeDate");
}
我很新的網頁設計,所以我只是總結一切,我認爲可能會導致一個問題。這是我的OrderForms.dbo文件的表定義。
CREATE TABLE [dbo].[OrderForms] (
[OrderID] INT IDENTITY (1, 1) NOT NULL,
[GrantID] NVARCHAR (100) NULL,
[ItemDescription] NVARCHAR (MAX) NULL,
[ItemQuantity] NVARCHAR (100) NULL,
[UnitPrice] NVARCHAR (100) NULL,
[CompanyID] NVARCHAR (100) NULL,
[CatalogNum] NVARCHAR (100) NULL,
[OrderDate] NVARCHAR (100) NULL,
[ItemLoc] NVARCHAR (100) NULL,
[PersonReq] INT DEFAULT ((0)) NULL,
[PersonRec] INT DEFAULT ((0)) NULL,
[OrderPostDate] DATETIME DEFAULT ('1900-01-01T00:00:00.000') NULL,
[OrderRecieveDate] DATETIME DEFAULT ('2013-01-01T00:00:00.000') NULL,
[OrderMadeDate] DATETIME DEFAULT ('2013-01-01T00:00:00.000') NULL,
CONSTRAINT [PK_dbo.OrderForms] PRIMARY KEY CLUSTERED ([OrderID] ASC)
);
任何幫助將不勝感激。我似乎無法弄清楚該列是如何創建兩次的。我嘗試刪除數據庫和先前的遷移,並執行'enable-migrations -forced'並從那裏重新啓動無效。這可能與我從最後缺乏EF背景知識有關。預先感謝任何幫助!
是否有可能您的數據庫版本已經不同步 - 意味着它試圖通過向它存在的表添加一個'OrderRecieveDate'來嘗試升級?如果使用模型上的字段構建乾淨的數據庫並且不進行遷移,是否也會發生同樣的情況? – Basic
我相信可能會有問題。我試着創建一個新的數據庫並播種一些新的信息,現在我得到一個新的錯誤,說「驗證失敗的一個或多個實體。有關更多詳細信息,請參閱'EntityValidationErrors'屬性。」 – user3294244
我討厭問明顯但是...... EntityValidationErrors屬性包含什麼? – Basic