DebuggerDisplayAttribute Kelas

Definisi

Ruang nama:

System.Diagnostics

Rakitan:

System.Runtime.dll

Sumber:

DebuggerDisplayAttribute.cs

Menentukan bagaimana kelas atau bidang ditampilkan di jendela variabel debugger.

public ref class DebuggerDisplayAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Delegate | System.AttributeTargets.Enum | System.AttributeTargets.Field | System.AttributeTargets.Property | System.AttributeTargets.Struct, AllowMultiple=true)]
public sealed class DebuggerDisplayAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Delegate | System.AttributeTargets.Enum | System.AttributeTargets.Field | System.AttributeTargets.Property | System.AttributeTargets.Struct, AllowMultiple=true)>]
type DebuggerDisplayAttribute = class
    inherit Attribute

Public NotInheritable Class DebuggerDisplayAttribute
Inherits Attribute

Warisan

Object

Attribute

DebuggerDisplayAttribute

Atribut

AttributeUsageAttribute

Contoh

Lihat contoh berikut di Visual Studio untuk melihat hasil penerapan DebuggerDisplayAttribute.

using namespace System;
using namespace System::Collections;
using namespace System::Diagnostics;
using namespace System::Reflection;

ref class HashtableDebugView;

[DebuggerDisplay("{value}", Name = "{key}")]
ref class KeyValuePairs
{
private:
    IDictionary^ dictionary;
    Object^ key;
    Object^ value;

public:
    KeyValuePairs(IDictionary^ dictionary, Object^ key, Object^ value)
    {
        this->value = value;
        this->key = key;
        this->dictionary = dictionary;
    }
};

[DebuggerDisplay("Count = {Count}")]
[DebuggerTypeProxy(HashtableDebugView::typeid)]
ref class MyHashtable : Hashtable
{
private:
    static const String^ TestString = "This should not appear in the debug window.";

internal:
    ref class HashtableDebugView
    {
    private:
        Hashtable^ hashtable;
    public:
        static const String^ TestString = "This should appear in the debug window.";
        HashtableDebugView(Hashtable^ hashtable)
        {
            this->hashtable = hashtable;
        }

        [DebuggerBrowsable(DebuggerBrowsableState::RootHidden)]
        property array<KeyValuePairs^>^ Keys
        {
            array<KeyValuePairs^>^ get()
            {
                array<KeyValuePairs^>^ keys = gcnew array<KeyValuePairs^>(hashtable->Count);

                IEnumerator^ ie = hashtable->Keys->GetEnumerator();
                int i = 0;
                Object^ key;
                while (ie->MoveNext())
                {
                    key = ie->Current;
                    keys[i] = gcnew KeyValuePairs(hashtable, key, hashtable[key]);
                    i++;
                }
                return keys;
            }
        }
    };
};

public ref class DebugViewTest
{
private:
    // The following constant will appear in the debug window for DebugViewTest.
    static const String^ TabString = "    ";
public:
    // The following DebuggerBrowsableAttribute prevents the property following it
    // from appearing in the debug window for the class.
    [DebuggerBrowsable(DebuggerBrowsableState::Never)]
    static String^ y = "Test String";

    static void Main()
    {
        MyHashtable^ myHashTable = gcnew MyHashtable();
        myHashTable->Add("one", 1);
        myHashTable->Add("two", 2);
        Console::WriteLine(myHashTable->ToString());
        Console::WriteLine("In Main.");
    }
};

int main()
{
    DebugViewTest::Main();
}

using System;
using System.Collections;
using System.Diagnostics;
using System.Reflection;

class DebugViewTest
{
    // The following constant will appear in the debug window for DebugViewTest.
    const string TabString = "    ";
    // The following DebuggerBrowsableAttribute prevents the property following it
    // from appearing in the debug window for the class.
    [DebuggerBrowsable(DebuggerBrowsableState.Never)]
    public static string y = "Test String";

    static void Main()
    {
        MyHashtable myHashTable = new MyHashtable();
        myHashTable.Add("one", 1);
        myHashTable.Add("two", 2);
        Console.WriteLine(myHashTable.ToString());
        Console.WriteLine("In Main.");
    }
}
[DebuggerDisplay("{value}", Name = "{key}")]
internal class KeyValuePairs
{
    private IDictionary dictionary;
    private object key;
    private object value;

    public KeyValuePairs(IDictionary dictionary, object key, object value)
    {
        this.value = value;
        this.key = key;
        this.dictionary = dictionary;
    }
}
[DebuggerDisplay("Count = {Count}")]
[DebuggerTypeProxy(typeof(HashtableDebugView))]
class MyHashtable : Hashtable
{
    private const string TestString = "This should not appear in the debug window.";

    internal class HashtableDebugView
    {
        private Hashtable hashtable;
        public const string TestString = "This should appear in the debug window.";
        public HashtableDebugView(Hashtable hashtable)
        {
            this.hashtable = hashtable;
        }

        [DebuggerBrowsable(DebuggerBrowsableState.RootHidden)]
        public KeyValuePairs[] Keys
        {
            get
            {
                KeyValuePairs[] keys = new KeyValuePairs[hashtable.Count];

                int i = 0;
                foreach(object key in hashtable.Keys)
                {
                    keys[i] = new KeyValuePairs(hashtable, key, hashtable[key]);
                    i++;
                }
                return keys;
            }
        }
    }
}

Imports System.Collections
Imports System.Diagnostics
Imports System.Reflection



Class DebugViewTest
    ' The following constant will appear in the debug window for DebugViewTest.
    Const TabString As String = "    "
    ' The following DebuggerBrowsableAttribute prevents the property following it
    ' from appearing in the debug window for the class.
    <DebuggerBrowsable(DebuggerBrowsableState.Never)> _
    Public Shared y As String = "Test String"

    Shared Sub Main() 
        Dim myHashTable As New MyHashtable()
        myHashTable.Add("one", 1)
        myHashTable.Add("two", 2)
        Console.WriteLine(myHashTable.ToString())
        Console.WriteLine("In Main.")

    End Sub
End Class
<DebuggerDisplay("{value}", Name := "{key}")>  _
Friend Class KeyValuePairs
    Private dictionary As IDictionary
    Private key As Object
    Private value As Object
    
    
    Public Sub New(ByVal dictionary As IDictionary, ByVal key As Object, ByVal value As Object) 
        Me.value = value
        Me.key = key
        Me.dictionary = dictionary

    End Sub
End Class
<DebuggerDisplay("Count = {Count}"), DebuggerTypeProxy(GetType(MyHashtable.HashtableDebugView))> _
Class MyHashtable
    Inherits Hashtable
    Private Const TestString As String = "This should not appear in the debug window."

    Friend Class HashtableDebugView
        Private hashtable As Hashtable
        Public Shared TestString As String = "This should appear in the debug window."

        Public Sub New(ByVal hashtable As Hashtable)
            Me.hashtable = hashtable
        End Sub

        <DebuggerBrowsable(DebuggerBrowsableState.RootHidden)> _
        ReadOnly Property Keys as KeyValuePairs()
            Get
                Dim nkeys(hashtable.Count) as KeyValuePairs

                Dim i as Integer = 0
                For Each key As Object In hashtable.Keys
                    nkeys(i) = New KeyValuePairs(hashtable, key, hashtable(key))
                    i = i + 1
                Next
                Return nkeys
            End Get
        End Property

    End Class
End Class

Keterangan

Konstruktor DebuggerDisplayAttribute memiliki argumen tunggal, string yang akan ditampilkan di kolom nilai untuk instans jenis. String ini dapat berisi kurung kurawal ({ dan }). Teks dalam sepasang kurung kurawal dievaluasi sebagai nama bidang, properti, atau metode. Misalnya, kode C# berikut menyebabkan "Hitungan = 4" ditampilkan ketika tanda plus (+) dipilih untuk memperluas tampilan debugger untuk instans MyHashtable.

[DebuggerDisplay("Count = {count}")]  
class MyHashtable  
{  
    public int count = 4;  
}  

Untuk informasi tentang menggunakan atribut ini di Visual Studio, lihat Menggunakan Atribut DebuggerDisplay.

Konstruktor

DebuggerDisplayAttribute(String)

Menginisialisasi instans baru kelas DebuggerDisplayAttribute.

Properti

Name	Mendapatkan atau mengatur nama untuk ditampilkan di jendela variabel debugger.
Target	Mendapatkan atau menetapkan jenis target atribut.
TargetTypeName	Mendapatkan atau menetapkan nama jenis target atribut.
Type	Mendapatkan atau mengatur string untuk ditampilkan di kolom jenis jendela variabel debugger.
TypeId	Ketika diimplementasikan di kelas turunan, mendapatkan pengidentifikasi unik untuk ini Attribute. (Diperoleh dari Attribute)
Value	Mendapatkan string untuk ditampilkan di kolom nilai jendela variabel debugger.

Metode

Equals(Object)	Mengembalikan nilai yang menunjukkan apakah instans ini sama dengan objek tertentu. (Diperoleh dari Attribute)
GetHashCode()	Mengembalikan kode hash untuk instans ini. (Diperoleh dari Attribute)
GetType()	Mendapatkan dari instans Type saat ini. (Diperoleh dari Object)
IsDefaultAttribute()	Ketika ditimpa di kelas turunan, menunjukkan apakah nilai instans ini adalah nilai default untuk kelas turunan. (Diperoleh dari Attribute)
Match(Object)	Saat ditimpa di kelas turunan, mengembalikan nilai yang menunjukkan apakah instans ini sama dengan objek tertentu. (Diperoleh dari Attribute)
MemberwiseClone()	Membuat salinan dangkal dari saat ini Object. (Diperoleh dari Object)
ToString()	Mengembalikan string yang mewakili objek saat ini. (Diperoleh dari Object)