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ReadOnlyAttribute Constructor

Initializes a new instance of the ReadOnlyAttribute class.

Namespace:  System.ComponentModel
Assembly:  System (in System.dll)
public ReadOnlyAttribute(
	bool isReadOnly
)

Parameters

isReadOnly
Type: System.Boolean

true to show that the property this attribute is bound to is read-only; false to show that the property is read/write.

Members that are marked with the ReadOnlyAttribute set to true or that do not have a Set method cannot be changed. Members that do not have this attribute or that are marked with the ReadOnlyAttribute set to false are read/write, and they can be changed. The default is No.

NoteNote

When you mark a property with the ReadOnlyAttribute set to true, the value of this attribute is set to the constant member Yes. For a property marked with the ReadOnlyAttribute set to false, the value is No. Therefore, when you want to check the value of this attribute in your code, you must specify the attribute as ReadOnlyAttribute.Yes or ReadOnlyAttribute.No.

The following code example marks a property as read-only. This code creates a new ReadOnlyAttribute, sets its value to ReadOnlyAttribute.Yes, and binds it to the property.

[ReadOnly(true)]
public int MyProperty {
   get {
      // Insert code here. 
      return 0;
   }
   set {
      // Insert code here.
   }
}
   

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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