Question

基本上与这个问题相同，但在Delphi Prism中：

我设法从字符串中执行此操作：

YourEnum := Enum.Parse(TypeOf(YourEnum), "mystr") as YourEnum

但我尝试了以下操作，并出现类型不匹配错误：

YourEnum := 3 as YourNum

任何想法将int转换为Enum的语法是什么？

Answer 1

@Robo，将int转换为Enum的语法是

YourEnumVar := YourEnum(3);

或

YourEnumVar := Object(3) as YourEnum;

参见此示例

namespace ConsoleAppEnumsDelphiPrism;

interface

type
  Language = (Delphi=1,Delphi_Prism,CBuilder);

  ConsoleApp = class
  public
    class method Main;
  end;

implementation

class method ConsoleApp.Main;
var
    MyEnum : Language;
begin
  // String to Enum
  MyEnum := Language(Enum.Parse(typeof(Language), 'Delphi_Prism'));
  Console.WriteLine(MyEnum.ToString());//Print Delphi_Prism

  // Int to Enum
  MyEnum:=Language(2);
  Console.WriteLine(MyEnum.ToString());//Print Delphi_Prism

  // Int to Enum using "as"   
  MyEnum:= Object(1) as Language;
  Console.WriteLine(MyEnum.ToString());//Print Delphi

  Console.ReadKey();
end;

end.

在Delphi Prism中将int转换为Enum

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