如何检查变量是否为枚举 [英] How to check if a variable is an Enum
问题描述
有没有办法检查某个变量是否为枚举？
示例代码：
public enum MyEnum {
星期一，
星期二，
星期三
}
public void MyMethod（）
{
MyEnum myEnum = MyEnum.Monday;
string myString =" Bla bla bla";
bool firstTry = IsEnum（myEnum）;
bool secondTry = IsEnum（myString）;
}
有没有办法写一个函数IsEnum（），以便firstTry为true，并且
secondTry为false？
myEnum.GetType（）告诉我myEnum属于MyEnum类型。
GetTypeCode（）告诉我它是一个Int32。
谢谢，
-Patrick
Is there a way to check if a certain variable is an enum?
Example code:
public enum MyEnum {
Monday,
Tuesday,
Wednesday
}
public void MyMethod()
{
MyEnum myEnum = MyEnum.Monday;
string myString = "Bla bla bla";
bool firstTry = IsEnum(myEnum);
bool secondTry = IsEnum(myString);
}
Is there a way to write a function IsEnum() so that firstTry is true and
secondTry is false?
myEnum.GetType() tells me that myEnum is of the type MyEnum.
GetTypeCode() tells me that it''s an Int32.
Thanks,
-Patrick
推荐答案
Patrick，
我的猜测是你可以在
问题 - 它应该在链中有System.Enum。
- < br $>
真诚的，
Dmitriy Lapshin [C＃/ .NET MVP]
今天将单元测试的强大功能带到VS .NET IDE！ /> http://www.x-unity.net/teststudio.aspx
" Patrick B" <是ne ******* @ devzoo.com>在消息中写道
新闻：Op ************** @ TK2MSFTNGP09.phx.gbl ...
Patrick,
My guess is that you can check the inheritance chain for the type in
question - it should have System.Enum in the chain.
--
Sincerely,
Dmitriy Lapshin [C# / .NET MVP]
Bring the power of unit testing to the VS .NET IDE today!
http://www.x-unity.net/teststudio.aspx
"Patrick B" <ne*******@devzoo.com> wrote in message
news:Op**************@TK2MSFTNGP09.phx.gbl...
有没有办法检查某个变量是否为枚举？
示例代码：
public enum MyEnum {
Monday，
Tuesday，
Wednesday
}
public void MyMethod（）
{
MyEnum myEnum = MyEnum.Monday;
string myString =" Bla bla bla" ;;
bool firstTry = IsEnum（myEnum）;
bool secondTry = IsEnum（myString）;
}
是否有办法编写函数IsEnum（），以便firstTry为true并且
secondTry是假的？
myEnum.GetType（）告诉我myEnum属于MyEnum类型。 GetTypeCode（）
告诉我它是一个Int32。
谢谢，
-Patrick
Is there a way to check if a certain variable is an enum?
Example code:
public enum MyEnum {
Monday,
Tuesday,
Wednesday
}
public void MyMethod()
{
MyEnum myEnum = MyEnum.Monday;
string myString = "Bla bla bla";
bool firstTry = IsEnum(myEnum);
bool secondTry = IsEnum(myString);
}
Is there a way to write a function IsEnum() so that firstTry is true and
secondTry is false?
myEnum.GetType() tells me that myEnum is of the type MyEnum. GetTypeCode()
tells me that it''s an Int32.
Thanks,
-Patrick
嗨帕特里克，
Enum.IsDefined（typeof（MyEnum），myValue）
Roland
" Patrick B" schrieb：
Hi Patrick,
Enum.IsDefined(typeof(MyEnum), myValue)
Roland
"Patrick B" schrieb:
有没有办法检查某个变量是否为枚举？
示例代码：
public enum MyEnum {
周一，周二，
周三
}
公开无效MyMethod（）
{
MyEnum myEnum = MyEnum.Monday;
string myString =" Bla bla bla" ;;
bool firstTry = IsEnum（myEnum）;
bool secondTry = IsEnum（myString）;
}
是有一种方法可以编写一个函数IsEnum（），以便firstTry为true，并且第二次尝试是假的吗？
myEnum.GetType（）告诉我myEnum属于MyEnum类型。
GetTypeCode（）告诉我它是Int32。
谢谢，
-Patrick
Is there a way to check if a certain variable is an enum?
Example code:
public enum MyEnum {
Monday,
Tuesday,
Wednesday
}
public void MyMethod()
{
MyEnum myEnum = MyEnum.Monday;
string myString = "Bla bla bla";
bool firstTry = IsEnum(myEnum);
bool secondTry = IsEnum(myString);
}
Is there a way to write a function IsEnum() so that firstTry is true and
secondTry is false?
myEnum.GetType() tells me that myEnum is of the type MyEnum.
GetTypeCode() tells me that it''s an Int32.
Thanks,
-Patrick
Roland，
有没有办法使用IsDefined，即使我没有myValue来检查
反对呢？我不想检查myValue是否已定义，如果Enum本身已定义，我想检查
。
谢谢，
Patrick
Roland Polzer写道：
Roland,
Is there a way to use IsDefined even if I don''t have a myValue to check
against it? I don''t want to check if myValue is defined, I want to check
if the Enum itself is defined.
Thanks,
Patrick
Roland Polzer wrote:
嗨Patrick，
Enum.IsDefined（typeof（MyEnum），myValue ）
Roland
Patrick B schrieb：
Hi Patrick,
Enum.IsDefined(typeof(MyEnum), myValue)
Roland
"Patrick B" schrieb:
这篇关于如何检查变量是否为枚举的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
