XAML errors and warnings

When authoring XAML, Visual Studio analyzes the code as you type. A squiggle appears on a line of code when an error is detected. Hovering over the squiggle gives you more information about the error or warning. For some errors and warnings, a Quick Action lightbulb is displayed, and using the Ctrl+. keyboard shortcut displays the options to fix the issue.

Error types

Behind the scenes, multiple tools analyze the XAML in parallel. XAML errors are categorized into one of the following three types, based on the tool that detected the error:

Error detected by	Error code format	Visual Studio Version
XAML Language Service (XAML editor)	XLSxxxx	All Versions
XAML Designer	XDGxxxx	All Versions
XAML Edit & Continue	XECxxxx	Visual Studio 2019 version 16.1 or earlier
XAML Hot Reload	XHRxxxx	Visual Studio 2019 version 16.2 or later

For more details on the rebranding of XAML Edit & Continue as XAML Hot Reload, see our release notes

Note

Not all errors or warnings have a corresponding code. Such errors are usually XAML Designer errors.

Suppress XAML Designer errors

Open the Options dialog by selecting Tools > Options, and then select Text Editor > XAML > Miscellaneous.

Uncheck the Show errors detected by the XAML designer check box.