ABP实体设置组合主键

public class SYSDEA : Entity
{
///

/// 无效Id
///

[NotMapped]
public override string Id => $"{DEA001}-{DEA002}";
///

/// 类别
///

[Required]
public string DEA001 { get; set; }

///

/// 年
///

[Required]
public string DEA002 { get; set; }