无法隐式转换类型'System.Collections.Generic.List<>'到"System.Threading.Tasks.Task<>
问题描述：
我要例外了.
不能将类型
'System.Collections.Generic.List<IntegraPay.Domain.SObjects.Industry>'隐式转换为'System.Threading.Tasks.Task<System.Collections.Generic.IEnumerable<IntegraPay.Domain.SObjects.Industry>>'
下面是我的属性和方法.
Below is my property and method.
private List<WebFormFieldContent> WebFormFields { get; set; } =
new List<WebFormFieldContent>();
Task<IEnumerable<WebFormFieldContent>> IRegistrationRepository.GetWebFormFields()
{
return WebFormFields;
}
答
当方法声明中缺少async时，通常会发生此错误.
This error typically happens when you are missing async in the method declaration.
将async放在签名中时，C#编译器会添加魔术"，以执行从对象到返回该对象的Task<T>的转换.
When you put async in the signature, C# compiler adds "magic" to do the conversion from an object to a Task<T> returning that object.
但是，根据您的情况，async是不必要的，因为您返回的任务的结果已经是:
However, in your situation async is unnecessary, because you return a task with a result that you already have:
return Task.FromResult<IEnumerable<WebFormFieldContent>>(
WebFormFields
);