DebuggerDisplayAttribute Klasse

Definition

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)]
[System.Runtime.InteropServices.ComVisible(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

[<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)>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type DebuggerDisplayAttribute = class
    inherit Attribute

Public NotInheritable Class DebuggerDisplayAttribute
Inherits Attribute

Vererbung

Object

Attribute

DebuggerDisplayAttribute

Attribute

AttributeUsageAttribute ComVisibleAttribute

Beispiele

Sehen Sie sich das folgende Beispiel in Visual Studio an, um die Ergebnisse der Anwendung der DebuggerDisplayAttribute anzuzeigen.

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

Hinweise

Der DebuggerDisplayAttribute Konstruktor weist ein einzelnes Argument auf: eine Zeichenfolge, die in der Wertspalte für Instanzen des Typs angezeigt werden soll. Diese Zeichenfolge kann geschweifte Klammern ({ und }) enthalten. Der Text innerhalb eines Klammerpaars wird als Name eines Felds, einer Eigenschaft oder einer Methode ausgewertet. Der folgende C#-Code bewirkt beispielsweise, dass "Count = 4" angezeigt wird, wenn das Pluszeichen (+) ausgewählt ist, um die Debuggeranzeige für eine Instanz von MyHashtablezu erweitern.

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

Informationen zur Verwendung dieses Attributs in Visual Studio finden Sie unter Using the DebuggerDisplay Attribute.