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Entity Framework Core

Many to many

Many-to-many

Many-to-many relationships require a collection navigation property on both sides. They will be discovered by convention like other types of relationships.
C#Copy
public class Post
{
public int PostId { get; set; }
public string Title { get; set; }
public string Content { get; set; }

public ICollection<Tag> Tags { get; set; }
}

public class Tag
{
public string TagId { get; set; }

public ICollection<Post> Posts { get; set; }
}
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