d:Text property does not exist in namespace http://schemas.microsoft.com/expression/blend/2008

Carolina Gritti 41 Reputation points


i'm working on a WPF application on Visual Studio 2019 version 16.8.3.
I need to use design time data.
I followed what is written in this article

But when i try to add a TextBlock in this way

<TextBlock Text="{Binding Name}" d:Text="Name!" />

designer says that "Text property does not exist in namespace http://schemas.microsoft.com/expression/blend/2008"

Any suggestions?

Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
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An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
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A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
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  1. Viorel 113.7K Reputation points

    It seems that the feature is available in .NET Core and .NET 5 projects. Try experimenting with a new “WPF Application” instead of “WPF App (.NET Framework)”.

    In case of .NET Framework, try enabling an option: menu, Tools, Options, Environment, Preview Features, “New WPF XAML Designer…”. Then restart Visual Studio.

    Make sure the the <Window> contains the definitions of xmlns:d and xmlns:mc, which usually are already present by default.

    Also consider updating Visual Studio.

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  1. Carolina Gritti 41 Reputation points

    Thank you very much!

    First i tried with a new “WPF Application” (not “WPF App (.NET Framework)”) and it works!

    But then i updated Visual Studio and enabled the option “New WPF XAML Designer…” and it works also with a WPF App (.NET Framework) application.

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