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Debugging and Interpreting Errors in the WPF Designer

.NET Framework 3.5

Visual Studio 2010

The Windows Presentation Foundation (WPF) Designer for Visual Studio provides full debugging support for your WPF controls and applications. If errors occur, various tools and resources are available to interpret and correct the errors.

In This Section

XAML Errors and Help: Describes the Error List window and how to get help on XAML errors that appear in the WPF Designer.
Error Message Reference for the WPF Designer: Contains links to topics that describe XAML errors that appear in the WPF Designer.
Debugging and Interpreting Errors Walkthroughs: Contains links to topics that describe how to debug and interpret runtime errors in the WPF Designer.
Loading of the visual designer was cancelled: Describes the message that appears in the WPF Designer when you cancel loading a XAML file.
The document root element is not supported by the visual designer: Describes the message that appears in the WPF Designer when you open a XAML file without any visual objects.
The document contains errors that must be fixed: Describes the message that appears in the WPF Designer when a XAML file contains an error.
An unhandled exception has occurred: Describes the message that appears in the WPF Designer when a XAML file accesses code that contains an exception.

Reference

XamlParseException: Represents the exception class for parser-specific exceptions.
ExceptionRoutedEventArgs: Provides data for the Image and MediaElement failed events.
DispatcherUnhandledException: Occurs when code executing by way of the Dispatcher raises an exception which is not handled.

Related Sections

Troubleshooting WPF Designer Load Failures: Describes procedures for understanding unexpected behavior in your custom designer code.
XAML: Contains links to topics that describe how to use XAML markup to define your WPF controls and applications.
XAML Namespace (x:) Language Features: Contains links to topics that describe elements and attributes in the XAML namespace.
WPF Namespace XAML Extensions: Contains links to topics that describe XAML markup extensions.
Error List Window: Describes how errors, warnings, and messages are displayed in the Error List window.
Exception Assistant: Describes the Exception Assistant dialog box, which you can use to interpret runtime exceptions.
Debugging in Visual Studio: Contains links to topics that describe how to use Visual Studio to debug applications.
Exception Handling (Debugging): Describes how to use the error handling features of Visual Studio to interpret runtime exceptions.
Unhandled Application Exceptions Sample: Describes how to handle the DispatcherUnhandledException event to process recoverable and unrecoverable unhandled application exceptions.

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