ObsoleteAttribute.Message 속성
중요
일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.
해결 방법 메시지를 가져옵니다.
public:
property System::String ^ Message { System::String ^ get(); };
public string Message { get; }
public string? Message { get; }
member this.Message : string
Public ReadOnly Property Message As String
해결 방법 텍스트 문자열입니다.
다음 예제에서는 사용되지 않는 것으로 표시된 두 멤버를 포함하는 클래스를 정의합니다. 첫 번째 속성 OldProperty
은 호출될 경우 컴파일러 경고를 생성합니다. 두 번째 메서드 CallOldMethod
는 컴파일러 오류를 생성합니다. 이 예제에서는 리플렉션을 사용하여 형식의 멤버에 적용된 특성에 대한 ObsoleteAttribute 정보를 얻고 해당 특성과 IsError 속성의 Message 값을 표시합니다.
using System;
using System.Reflection;
public class Example
{
// Mark OldProperty As Obsolete.
[ObsoleteAttribute("This property is obsolete. Use NewProperty instead.", false)]
public string OldProperty
{ get { return "The old property value."; } }
public string NewProperty
{ get { return "The new property value."; } }
// Mark OldMethod As Obsolete.
[ObsoleteAttribute("This method is obsolete. Call NewMethod instead.", true)]
public string OldMethod()
{
return "You have called OldMethod.";
}
public string NewMethod()
{
return "You have called NewMethod.";
}
public static void Main()
{
// Get all public members of this type.
MemberInfo[] members = typeof(Example).GetMembers();
// Count total obsolete members.
int n = 0;
// Try to get the ObsoleteAttribute for each public member.
Console.WriteLine("Obsolete members in the Example class:\n");
foreach (var member in members) {
ObsoleteAttribute[] attribs = (ObsoleteAttribute[])
member.GetCustomAttributes(typeof(ObsoleteAttribute),
false);
if (attribs.Length > 0) {
ObsoleteAttribute attrib = attribs[0];
Console.WriteLine("Member Name: {0}.{1}", member.DeclaringType.FullName, member.Name);
Console.WriteLine(" Message: {0}", attrib.Message);
Console.WriteLine(" Warning/Error: {0}", attrib.IsError ? "Error" : "Warning");
n++;
}
}
if (n == 0)
Console.WriteLine("The Example type has no obsolete attributes.");
}
}
// The example displays the following output:
// Obsolete members in the Example class:
//
// Member Name: Example.OldMethod
// Message: This method is obsolete. Call NewMethod instead.
// Warning/Error: Error
// Member Name: Example.OldProperty
// Message: This property is obsolete. Use NewProperty instead.
// Warning/Error: Warning
open System
type Example() =
// Mark OldProperty As Obsolete.
[<ObsoleteAttribute("This property is obsolete. Use NewProperty instead.", false)>]
member _.OldProperty =
"The old property value."
member _.NewProperty =
"The new property value."
// Mark OldMethod As Obsolete.
[<ObsoleteAttribute("This method is obsolete. Call NewMethod instead.", true)>]
member _.OldMethod() =
"You have called OldMethod."
member _.NewMethod() =
"You have called NewMethod."
// Get all public members of this type.
let members = typeof<Example>.GetMembers()
// Count total obsolete members.
let mutable n = 0
// Try to get the ObsoleteAttribute for each public member.
printfn "Obsolete members in the Example class:\n"
for m in members do
let attribs = m.GetCustomAttributes(typeof<ObsoleteAttribute>, false) |> box :?> ObsoleteAttribute[]
if attribs.Length > 0 then
let attrib = attribs[0]
printfn $"Member Name: {m.DeclaringType.FullName}.{m.Name}"
printfn $" Message: {attrib.Message}"
printfn $""" Warning/Error: {if attrib.IsError then "Error" else "Warning"}"""
n <- n + 1
if n = 0 then
printfn "The Example type has no obsolete attributes."
// The example displays the following output:
// Obsolete members in the Example class:
//
// Member Name: Example+Example.OldMethod
// Message: This method is obsolete. Call NewMethod instead.
// Warning/Error: Error
// Member Name: Example+Example.OldProperty
// Message: This property is obsolete. Use NewProperty instead.
// Warning/Error: Warning
Imports System.Reflection
Public Module Example
' Mark OldProperty As Obsolete.
<ObsoleteAttribute("This property is obsolete. Use NewProperty instead.", False)>
Public ReadOnly Property OldProperty As String
Get
Return "The old property value."
End Get
End Property
Public ReadOnly Property NewProperty As String
Get
Return "The new property value."
End Get
End Property
' Mark OldMethod As Obsolete.
<ObsoleteAttribute("This method is obsolete. Call NewMethod instead.", True)>
Public Function OldMethod() As String
Return "You have called OldMethod."
End Function
Public Function NewMethod() As String
Return "You have called NewMethod."
End Function
Public Sub Main()
' Get all public members of this type.
Dim members() As MemberInfo = GetType(Example).GetMembers()
' Count total obsolete members.
Dim n As Integer = 0
' Try to get the ObsoleteAttribute for each public member.
Console.WriteLine("Obsolete members in the Example class:")
Console.WriteLine()
For Each member In members
Dim attribs() As ObsoleteAttribute = CType(member.GetCustomAttributes(GetType(ObsoleteAttribute),
False), ObsoleteAttribute())
If attribs.Length > 0 Then
Dim attrib As ObsoleteAttribute = attribs(0)
Console.WriteLine("Member Name: {0}.{1}", member.DeclaringType.FullName, member.Name)
Console.WriteLine(" Message: {0}", attrib.Message)
Console.WriteLine(" Warning/Error: {0}", if(attrib.IsError, "Error", "Warning"))
n += 1
End If
Next
If n = 0 Then
Console.WriteLine("The Example type has no obsolete attributes.")
End If
End Sub
End Module
' The example displays the following output:
' Obsolete members in the Example class:
'
' Member Name: Example.OldMethod
' Message: This method is obsolete. Call NewMethod instead.
' Warning/Error: Error
' Member Name: Example.OldProperty
' Message: This property is obsolete. Use NewProperty instead.
' Warning/Error: Warning