ReadOnlyAttribute.IsReadOnly Property

Definition

Namespace:

System.ComponentModel

Assembly:

System.ComponentModel.Primitives.dll

Source:

ReadOnlyAttribute.cs

Gets a value indicating whether the property this attribute is bound to is read-only.

public:
 property bool IsReadOnly { bool get(); };

public bool IsReadOnly { get; }

member this.IsReadOnly : bool

Public ReadOnly Property IsReadOnly As Boolean

Property Value

Boolean

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

Examples

The following code example checks to see whether MyProperty is read-only. First, the code gets the attributes for MyProperty by doing the following:

• Retrieving a PropertyDescriptorCollection with all the properties for the object.

• Indexing into the PropertyDescriptorCollection to get MyProperty.

• Saving the attributes for this property in the attributes variable.

Then the code sets myAttribute to the value of the ReadOnlyAttribute in the AttributeCollection and checks whether the property is read-only.

// Gets the attributes for the property.
AttributeCollection^ attributes = TypeDescriptor::GetProperties( this )[ "MyProperty" ]->Attributes;

// Checks to see whether the property is read-only.
ReadOnlyAttribute^ myAttribute = dynamic_cast<ReadOnlyAttribute^>(attributes[ ReadOnlyAttribute::typeid ]);
if ( myAttribute->IsReadOnly )
{
   // Insert code here.
}

// Gets the attributes for the property.
AttributeCollection attributes = 
   TypeDescriptor.GetProperties(this)["MyProperty"].Attributes;

// Checks to see whether the property is read-only.
ReadOnlyAttribute myAttribute = 
   (ReadOnlyAttribute)attributes[typeof(ReadOnlyAttribute)];

if(myAttribute.IsReadOnly) {
   // Insert code here.
}

' Gets the attributes for the property.
Dim attributes As AttributeCollection = _
   TypeDescriptor.GetProperties(Me)("MyProperty").Attributes
       
' Checks to see whether the property is read-only.
Dim myAttribute As ReadOnlyAttribute = _
   CType(attributes(GetType(ReadOnlyAttribute)), ReadOnlyAttribute)
   
If myAttribute.IsReadOnly Then
    ' Insert code here.
End If

See also

• ReadOnlyAttribute
• Attribute
• PropertyDescriptor
• AttributeCollection
• PropertyDescriptorCollection