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PropertyDescriptor.CanResetValue Method

When overridden in a derived class, returns whether resetting an object changes its value.

[Visual Basic]
Public MustOverride Function CanResetValue( _
   ByVal component As Object _
) As Boolean
[C#]
public abstract bool CanResetValue(
 object component
);
[C++]
public: virtual bool CanResetValue(
 Object* component
) = 0;
[JScript]
public abstract function CanResetValue(
   component : Object
) : Boolean;

Parameters

component
The component to test for reset capability.

Return Value

true if resetting the component changes its value; otherwise, false.

Remarks

Typically, this method is implemented through reflection.

Notes to Inheritors:  When overridden in a derived class, this method looks for a DefaultValueAttribute. If it finds one, it compares the value of the attribute with the property's current value. It returns true when the default value does not match the property's current value. If this method cannot find a DefaultValueAttribute, it looks for a "ShouldPersistMyProperty" method that you need to implement yourself. If this is found, CanResetValue returns what "ShouldPersistMyProperty" returns. Otherwise, it looks for a "ResetMyProperty" method that you need to implement yourself. If this is found, CanResetValue returns true. If it cannot find a DefaultValueAttribute, a "ShouldPersistMyProperty" method, or a "ResetMyProperty" method, then it returns false.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

See Also

PropertyDescriptor Class | PropertyDescriptor Members | System.ComponentModel Namespace | PropertyDescriptor

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