字段初始值设定项无法引用非静态字段，方法或属性

以下是我的代码：

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

我收到以下错误：

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

Answer 1

这条线

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

无法访问管理器，因为它尚未设置为任何东西 – 您可以将分配移动到构造函数中 –

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

Answer 2

uploadBitsJob在类级别声明，使其成为一个字段。 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;

然后在构造函数中初始化字段：

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

Answer 3

尝试从静态方法访问非静态属性时通常会发生这种情况。 请提供更多代码。