[英]Getting error unable to determine composite primary key while creating strongly typed view
我正在使用ASP.NET-MVC應用程序,正在嘗試從控制器創建強類型視圖,但是卻出現了如下圖所示的錯誤
public class PropertyRentingApplication
{
public PropertyRentingApplication() { }
[Key]
[Display(Name = "Application ID")]
public int ApplicationID { get; set; }
[Key, ForeignKey("PropertyType")]
[Display(Name = "Property Type ID")]
[Required(ErrorMessage = "Require Property Type ID")]
public int PropertyTypeID { get; set; }
[Key, ForeignKey("Student")]
[Display(Name = "Student ID")]
[Required(ErrorMessage = "Require Student ID")]
public int StudentID { get; set; }
[Display(Name = "Application Reference")]
[MaxLength(150)]
[Required(ErrorMessage = "Application Reference")]
public string ApplicationReference { get; set; }
[Display(Name = "Date Of Application")]
[Required(ErrorMessage = "Require Date of Application Been Submitted")]
public System.DateTime DateOfApplication { get; set; }
[Display(Name = "Secure Entire Property")]
[Required(ErrorMessage = "Require Information on If You Want to Secure Entire Property")]
public bool SecureEntireProperty { get; set; }
[Display(Name = "Application Status")]
[MaxLength(50)]
[Required(ErrorMessage = "Require Application Status")]
public string ApplicationStatus { get; set; }
public PropertyType PropertyType { get; set; }
public Student Student { get; set; }
}
我已更新如下“ [Column(Order = 1)]”,但仍遇到相同的錯誤
[Key]
[Display(Name = "Application ID")]
[Column(Order = 0)]
public int ApplicationID { get; set; }
[Key, ForeignKey("PropertyType")]
[Display(Name = "Property Type ID")]
[Column(Order = 2)]
[Required(ErrorMessage = "Require Property Type ID")]
public int PropertyTypeID { get; set; }
[Key, ForeignKey("Student")]
[Display(Name = "Student ID")]
[Column(Order = 1)]
[Required(ErrorMessage = "Require Student ID")]
public int StudentID { get; set; }
您需要用[Column(Order = 0)]
和[Column(Order = 1)]
等修飾鍵列,以定義這些列在鍵中出現的順序
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