类初始化问题 [英] Class Initialization Problem

问题描述

你好

我有两个课程如下：

公共课硕士
 {
 public int Mid {get;组; } 
公共字符串Mname {get;组; } 
 public List< Child>孩子们{得到;组; } 
} 

 public partial class Child 
 {
 public int CId {get;组; } 
公共字符串Cname {get;组; } 
 public Master Master {get;组; } 
} 

如果我想执行任何操作，例如插入如下：

 public int save（）
 {
 Child child = new Child（）; 
 int i = context.InsertOrUpate（child.CId，child.Cname，child.Master.Mid）; 
返回i; 
} 

它显示对象参考未设置为对象的引用。

有人可以帮我解决这个问题吗？

提前致谢

---

Md。 Mojammel Haque高级软件工程师Skype：mojamcpds1 Gmail：[e-mail]单元格：[phone]

解决方案

问题在于第2行
< pre class ="prettyprint prettyprinted"style =""> context 。 InsertOrUpate

因此发生错误..而不是你可以在基类中编写抽象插入或更新方法..

Hello

I have two class as below:

   public class Master
    {
        public int Mid { get; set; }
        public string Mname { get; set; }
        public List<Child> Children { get; set; }
    }

  public partial class Child
    {
        public int CId { get; set; }
        public string Cname { get; set; }
        public Master Master { get; set; }
    }

If I want to perform any operation e.g. Insert as below:

public int save()
    {
        Child child = new Child();
        int i = context.InsertOrUpate(child.CId, child.Cname, child.Master.Mid);
        return i;
    }

It showing me Object Reference not set to the reference of an Object.

Can anybody please help me to solve this problem?

Thanks in advance

---

Md. Mojammel Haque Senior Software Engineer Skype: mojamcpds1 Gmail:[e-mail] Cell: [phone]

解决方案

The problem is line 2

context.InsertOrUpate  

So error is occurring.. instead of that you can write abstract insert or update method in base class..

这篇关于类初始化问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！