I am face the foreign key error that is one to many relations

I am using the EF Core v5.0.2 & sqlserver database.

I set the Foreign key in two tables.

Primary key

Student.cs

[Key]      public int Id { get; set; }      public string Name { get; set; }  

Foreign key

StudentAddress.cs

[Key]      public int Id { get; set; }      public int StudentId { get; set; }      [ForeignKey("StudentId")]      public virtual Student Student { get; set; }  

second Foreign key

StudentDetail.cs

[Key]      public int Id { get; set; }      public int StudentId { get; set; }      [ForeignKey("StudentId")]      public virtual Student Student { get; set; }  

The Context File

public class Context : DbContext  {      public Context(DbContextOptions<Context> options) : base(options)      {      }      public DbSet<Student> Student { get; set; }      public DbSet<StudentAddress> StudentAddress { get; set; }      public DbSet<StudentDetail> StudentDetail { get; set; }  }  

Error :

SqlException: The INSERT statement conflicted with the FOREIGN KEY constraint "FK_ Student Address_Student_StudentId". The conflict occurred in database "StudData", table "dbo.Student", column 'Id'. The statement has been terminated.

https://stackoverflow.com/questions/65949087/i-am-face-the-foreign-key-error-that-is-one-to-many-relations January 29, 2021 at 01:07PM