字段初始化项不能引用非静态字段、方法或属性

本文关键字：字段 方法 属性 静态 初始化 不能 引用 | 更新日期: 2023-09-27 18:02:02

我的代码如下:

private BitsManager manager;
private const string DisplayName = "Test Job";       
public SyncHelper()
{
    manager = new BitsManager();
}        
BitsJob uploadBitsJob = manager.CreateJob(DisplayName, JobType.Upload);

我得到以下错误:

A field initializer cannot reference the non-static field, method, or property 'BITSIntegrationModule.SyncService.SyncHelper.manager'

字段初始化项不能引用非静态字段、方法或属性

BitsJob uploadBitsJob = manager.CreateJob(DisplayName, JobType.Upload);

不能访问管理器，因为它还没有被设置为任何东西-您可以将分配移到构造函数中- 

private readonly BitsManager manager;
private const string DisplayName = "Test Job";       
BitsJob readonly uploadBitsJob;
public SyncHelper()
{
  manager = new BitsManager();
  uploadBitsJob = manager.CreateJob(DisplayName, JobType.Upload);
}

uploadBitsJob是在类级别声明的，这使得它成为一个字段。字段实例不能用于初始化其他字段。

相反，您可以声明该字段而不初始化它:

BitsJob uploadBitsJob;

然后初始化构造函数中的字段:

public SyncHelper()
{
  manager = new BitsManager();
  uploadBitsJob = manager.CreateJob(DisplayName, JobType.Upload);//here.  Now manager is initialized
}
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