传入枚举作为方法参数
我宣布了一个枚举:
public enum SupportedPermissions { basic, repository, both }
我也有像这样的POCO:
public class File { public string Id { get; set; } public string Name { get; set; } public string Description { get; set; } public SupportedPermissions SupportedPermissions { get; set; } }
现在我想创建一个方法,我可以用它来创建一个新的File对象:
public string CreateFile(string id, string name, string description, Enum supportedPermissions) { file = new File { Name = name, Id = id, Description = description, SupportedPermissions = supportedPermissions.basic }; return file.Id; }
我如何为枚举创建参数以及如何在我的伪代码SupportedPermissions = supportedPermissions.basic
分配它,以便我的File实例设置了SupportedPermissions?
更改CreateFile
方法的签名以期望SupportedPermissions
值而不是plain Enum。
public string CreateFile(string id, string name, string description, SupportedPermissions supportedPermissions) { file = new File { Name = name, Id = id, Description = description, SupportedPermissions = supportedPermissions }; return file.Id; }
然后,当您调用方法时,将SupportedPermissions
值传递给您的方法
var basicFile = CreateFile(myId, myName, myDescription, SupportedPermissions.basic);
如果要传入要使用的值,则必须使用声明的枚举类型并直接使用提供的值:
public string CreateFile(string id, string name, string description, /* --> */ SupportedPermissions supportedPermissions) { file = new File { Name = name, Id = id, Description = description, SupportedPermissions = supportedPermissions // <--- }; return file.Id; }
如果您想要使用固定值,则根本不需要任何参数。 而是直接使用枚举值。 语法类似于类的静态成员:
public string CreateFile(string id, string name, string description) // <--- { file = new File { Name = name, Id = id, Description = description, SupportedPermissions = SupportedPermissions.basic // <--- }; return file.Id; }
首先将方法参数Enum supportedPermissions
更改为SupportedPermissions supportedPermissions
。
然后像这样创建你的文件
file = new File { Name = name, Id = id, Description = description, SupportedPermissions = supportedPermissions };
对你的方法的调用应该是
CreateFile(id, name, description, SupportedPermissions.basic);
public string CreateFile(string id, string name, string description, SupportedPermissions supportedPermissions) { file = new File { Name = name, Id = id, Description = description, SupportedPermissions = supportedPermissions }; return file.Id; }