PropertyAttributes Enumeration
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: System.ReflectionAssembly: mscorlib (in mscorlib.dll)
[SerializableAttribute] [FlagsAttribute] [ComVisibleAttribute(true)] public enum PropertyAttributes
/** @attribute SerializableAttribute() */ /** @attribute FlagsAttribute() */ /** @attribute ComVisibleAttribute(true) */ public enum PropertyAttributes
SerializableAttribute FlagsAttribute ComVisibleAttribute(true) public enum PropertyAttributes
| Member name | Description | |
|---|---|---|
![]() | HasDefault | Specifies that the property has a default value. |
![]() | None | Specifies that no attributes are associated with a property. |
![]() | Reserved2 | Reserved. |
![]() | Reserved3 | Reserved. |
![]() | Reserved4 | Reserved. |
![]() | ReservedMask | Specifies a flag reserved for runtime use only. |
![]() | RTSpecialName | Specifies that the metadata internal APIs check the name encoding. |
![]() | SpecialName | Specifies that the property is special, with the name describing how the property is special. |
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;} set { 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;} set { 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) { Console.WriteLine("\nReflection.PropertyAttributes"); // 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; } }
import System.*;
import 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";
/** @property
*/
public String get_Caption()
{
return caption ;
} //get_Caption
/** @property
*/
public void set_Caption(String value)
{
if (caption != value) {
caption = value;
}
} //set_Caption
} //AProperty
public class BProperty
{
// Define a default property.
private String caption = "B Default caption";
/** @property
*/
public String get_Item(int index)
{
return "1" ;
} //get_Item
/** @property
*/
public String get_Caption()
{
return caption ;
} //get_Caption
/** @property
*/
public void set_Caption (String value)
{
if (caption != value) {
caption = value;
}
} //set_Caption
} //BProperty
public class CProperty
{
// Define a read-only property.
private String caption = "C Default caption";
/** @property
*/
public String get_Caption()
{
return caption ;
// No setting is allowed, because this is a read-only property.
} //get_Caption
} //CProperty
class PropertyAttributesEnum
{
public static void main(String[] args)
{
Console.WriteLine("\nReflection.PropertyAttributes");
// 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.get_Caption()));
Console.Write(("\n1. Mypropertyb.Caption = "
+ myPropertyB.get_Caption()));
Console.Write(("\n1. Mypropertyc.Caption = "
+ myPropertyC.get_Caption()));
// Only myPropertyA can be changed, as myPropertyB is read-only.
myPropertyA.set_Caption("A- This is changed.");
myPropertyB.set_Caption("B- This is changed.");
// Note that myPropertyC is not changed because it is read only
Console.Write(("\n\n2. Mypropertya.Caption = "
+ myPropertyA.get_Caption()));
Console.Write(("\n2.Mypropertyb.Caption = "
+ myPropertyB.get_Caption()));
Console.Write(("\n2. Mypropertyc.Caption = "
+ myPropertyC.get_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.get_Attributes();
PropertyInfo myPropertyInfoB = myTypeB.GetProperty("Item");
PropertyAttributes myAttributesB = myPropertyInfoB.get_Attributes();
PropertyInfo myPropertyInfoC = myTypeC.GetProperty("Caption");
PropertyAttributes myAttributesC = myPropertyInfoC.get_Attributes();
// Display the property attributes value.
Console.Write(("\n\nA- " + myAttributesA.ToString()));
Console.Write(("\nB-" + myAttributesB.ToString()));
Console.Write(("\nC- " + myAttributesC.ToString()));
} //main
} //PropertyAttributesEnum
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
