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25 lines
1.6 KiB
Markdown
25 lines
1.6 KiB
Markdown
---
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title: "How to: Implement the INotifyPropertyChanged Interface"
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description: Learn how to implement the INotifyPropertyChanged interface on business objects that are used in Windows Forms data binding.
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ms.date: "03/30/2017"
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dev_langs:
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- "csharp"
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- "vb"
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helpviewer_keywords:
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- "INotifyPropertyChanged interface [Windows Forms], implementing"
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ms.assetid: eac428af-b43b-46ac-80d9-1a5f88658725
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---
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# How to: Implement the INotifyPropertyChanged Interface
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The following code example demonstrates how to implement the <xref:System.ComponentModel.INotifyPropertyChanged> interface. Implement this interface on business objects that are used in Windows Forms data binding. When implemented, the interface communicates to a bound control the property changes on a business object.
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## Example
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[!code-csharp[System.ComponentModel.IPropertyChangeExample#1](~/samples/snippets/csharp/VS_Snippets_Winforms/System.ComponentModel.IPropertyChangeExample/CS/Form1.cs#1)]
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[!code-vb[System.ComponentModel.IPropertyChangeExample#1](~/samples/snippets/visualbasic/VS_Snippets_Winforms/System.ComponentModel.IPropertyChangeExample/VB/Form1.vb#1)]
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## See also
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- [How to: Apply the PropertyNameChanged Pattern](how-to-apply-the-propertynamechanged-pattern.md)
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- [Windows Forms Data Binding](windows-forms-data-binding.md)
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- [How to: Raise Change Notifications Using a BindingSource and the INotifyPropertyChanged Interface](./controls/raise-change-notifications--bindingsource.md)
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- [Change Notification in Windows Forms Data Binding](change-notification-in-windows-forms-data-binding.md)
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