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PropertyAttributes Enumeration


Defines the attributes that can be associated with a property. These attribute values are defined in corhdr.h.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

Namespace:   System.Reflection
Assembly:  mscorlib (in mscorlib.dll)

public enum PropertyAttributes

Member nameDescription

Specifies that the property has a default value.


Specifies that no attributes are associated with a property.








Specifies a flag reserved for runtime use only.


Specifies that the metadata internal APIs check the name encoding.


Specifies that the property is special, with the name describing how the property is special.

To get the PropertyAttributes, first get the class Type. From the Type, get the PropertyInfo. From the PropertyInfo, get the Attributes.

The enumerated value is a number representing the bitwise OR of the attributes implemented on the method.

The following example builds three properties and displays the PropertyAttributes enumerated value. Note that the read-only property has no setter and thus cannot be changed by.Caption = statement.

using System;
using System.Reflection;

 // Define three properties: one read-write, one default,
 // and one read only. 
public class Aproperty  
    // Define a read-write property.
    private string caption = "A Default caption";
    public string Caption
        get{return caption;}
            if (caption != value){caption = value;}
public class Bproperty  
    // Define a default property.
    private string caption  = "B Default caption";
    public string this [int index]
        get {return "1";}
    public string Caption

        get{return caption;}
            if (caption != value){caption = value;}
public class Cproperty  
    // Define a read-only property.
    private string caption = "C Default caption";
    public string Caption
        get{return caption;}
        // No setting is allowed, because this is a read-only property.

class propertyattributesenum
    public static int Main(string[] args)

        // Determine whether a property exists, and change its value.
        Aproperty Mypropertya = new Aproperty();
        Bproperty Mypropertyb = new Bproperty();
        Cproperty Mypropertyc = new Cproperty();

        Console.Write("\n1. Mypropertya.Caption = " + Mypropertya.Caption );

        Console.Write("\n1. Mypropertyb.Caption = " + Mypropertyb.Caption );

        Console.Write("\n1. Mypropertyc.Caption = " + Mypropertyc.Caption );

        // Only Mypropertya can be changed, as Mypropertyb is read-only.
        Mypropertya.Caption = "A- This is changed.";
        Mypropertyb.Caption = "B- This is changed.";
        // Note that Mypropertyc is not changed because it is read only

        Console.Write("\n\n2. Mypropertya.Caption = " + Mypropertya.Caption );

        Console.Write("\n2. Mypropertyb.Caption = " + Mypropertyb.Caption );

        Console.Write("\n2. Mypropertyc.Caption = " + Mypropertyc.Caption );

        // Get the PropertyAttributes enumeration of the property.
        // Get the type.
        Type MyTypea = Type.GetType("Aproperty");
        Type MyTypeb = Type.GetType("Bproperty");
        Type MyTypec = Type.GetType("Cproperty");

        // Get the property attributes.
        PropertyInfo Mypropertyinfoa = MyTypea.GetProperty("Caption");
        PropertyAttributes Myattributesa = Mypropertyinfoa.Attributes;
        PropertyInfo Mypropertyinfob = MyTypeb.GetProperty("Item");
        PropertyAttributes Myattributesb = Mypropertyinfob.Attributes;
        PropertyInfo Mypropertyinfoc = MyTypec.GetProperty("Caption");
        PropertyAttributes Myattributesc = Mypropertyinfoc.Attributes;

        // Display the property attributes value.

        Console.Write("\n\na- " + Myattributesa.ToString());

        Console.Write("\nb- " + Myattributesb.ToString());

        Console.Write("\nc- " + Myattributesc.ToString());
        return 0;

// This example displays the following output to the console
// Reflection.PropertyAttributes
// 1. Mypropertya.Caption = A Default caption
// 1. Mypropertyb.Caption = B Default caption
// 1. Mypropertyc.Caption = C Default caption
// 2. Mypropertya.Caption = A- This is changed.
// 2. Mypropertyb.Caption = B- This is changed.
// 2. Mypropertyc.Caption = C Default caption
// a- None
// b- None
// c- None

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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