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Copy file name to clipboardExpand all lines: dotnet-desktop-guide/winforms/whats-new/net100.md
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title: What's new in WinForms for .NET 10 Release Candidate
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description: Learn about what's new in Windows Forms for .NET 10 Release Candidate. New versions of Windows Forms are released yearly with .NET.
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title: What's new in WinForms for .NET 10
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description: Learn about what's new in Windows Forms for .NET 10. New versions of Windows Forms are released yearly with .NET.
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ms.topic: whats-new
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ms.date: 10/08/2025
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ms.date: 11/06/2025
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ms.service: dotnet-desktop
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ms.update-cycle: 365-days
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dev_langs:
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#customer intent: As a developer, I want to know what's changed so that I can remain up-to-date.
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# What's new in Windows Forms for .NET 10 Release Candidate
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# What's new in Windows Forms for .NET 10
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This article provides a high-level overview about what's new with Windows Forms (WinForms) in .NET 10 Release Candidate. For detailed information, see the [release announcements](#release-announcements).
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This article provides a high-level overview about what's new with Windows Forms (WinForms) in .NET 10. For detailed information, see the [release announcements](#release-announcements). Use the release announcements to get an overview of the entire .NET 10 release. The rest of the sections sections highlight some of most the important changes to Windows Forms.
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.NET 10 RC 2 was released in October 2025.
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.NET 10 was released in November 2025.
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## Release announcements
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Each release announcement provides detailed information about Windows Forms changes for .NET 10:
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## Clipboard changes
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Windows Forms is shipping new code for the clipboard API. The clipboard is redesigned in a way that its code can be shared with Windows Presentation Foundation (WPF). Both desktop technologies now share the same code and unify how they interact with the clipboard.
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Windows Forms is shipping new code for the clipboard API. The clipboard is redesigned in a way that its code can be shared with Windows Presentation Foundation (WPF). Both desktop technologies now share the same code and unify how they interact with the clipboard. For more information, see [Windows Forms clipboard and DataObject changes in .NET 10](../migration/clipboard-dataobject-net10.md).
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.NET 9 obsoleted `BinaryFormatter`, which is used in some clipboard operations. These clipboard operations required you to opt in to compatibility package, or work around the operation. To ease the pain of moving away from `BinaryFormatter`, .NET 10 is obsoleting certain clipboard methods to indicate that they shouldn't be used. More methods are being added to help JSON serialization with clipboard data, circumventing the need for `BinaryFormatter`.
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title: What's new in WPF for .NET 10 Release Candidate
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description: Learn about what's new in Windows Presentation Foundation (WPF) for .NET 10 Release Candidate. New versions of WPF are released yearly with .NET.
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title: What's new in WPF for .NET 10
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description: Learn about what's new in Windows Presentation Foundation (WPF) for .NET 10. New versions of WPF are released yearly with .NET.
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ms.topic: whats-new
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ms.date: 10/08/2025
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ms.date: 11/06/2025
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ms.service: dotnet-desktop
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ms.update-cycle: 365-days
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#customer intent: As a developer, I want to know what's changed so that I can remain up-to-date.
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---
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# What's new in WPF for .NET 10 Release Candidate
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# What's new in WPF for .NET 10
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This article provides a high-level overview about what's new with Windows Presentation Foundation (WPF) in .NET 10 Release Candidate. For detailed information, see the [release announcements](#release-announcements).
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This article provides a high-level overview about what's new with Windows Presentation Foundation (WPF) in .NET 10. For detailed information, see the [release announcements](#release-announcements).Use the release announcements to get an overview of the entire .NET 10 release. The rest of the sections sections highlight some of most the important changes to Windows Forms.
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.NET 10 RC 2 was released in October 2025.
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.NET 10 was released in November 2025.
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## Release announcements
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Each release announcement provides detailed information about WPF changes for .NET 10:
> WPF didn't contain any notable changes for the .NET 10 RC1 release.
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## Performance improvements
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Performance was improved by replacing internal data structures with base .NET types, such as <xref:System.Collections.ObjectModel.ReadOnlyCollection`1>. This minimized allocations in UI automation and file dialogs, and speeding up pixel format conversions.
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