System.Windows.Markup.XamlParseException occurred. Microsoft visual studio community 2017
Please can someone be of help. I encountered this exception below, while trying to compile an XAML code.
System.Windows.Markup.XamlParseException occurred HResult=0x80131501 Message=’Provide value on ‘System.Windows.Baml2006.TypeConverterMarkupExtension’ threw an exception.’ Line number ’28’ and line position ’22’. Source=PresentationFramework StackTrace: at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri) at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri) at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream) at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator) at XAMLImage.MainWindow.InitializeComponent() in c:\users\mypc\documents\visual studio 2017\Projects\XAMLImage\XAMLImage\MainWindow.xaml:line 1
Inner Exception 1: IOException: Cannot locate resource ‘images/tahoe_01.jpg’.
The exception occurred at «InitializeComponent()» of the c# partial class of the code behind. Below is the c# partial class
Below is the XAML code
There is a blue squiggly line under the Source URL of the Image and ImageSource URL of the ImageBrush elements. I hover my mouse over them, and intellisense says «could not find file ‘c:\Program Files(x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\images%5Cmyfilename.gif'»(one of the files is a gif, and the other is a png). I thought these was an unsual path for the file to be located, but I went on and created the URLs on that path, but expection, still throwing.
Please can someone be of help. Am using Microsoft visual studio community 2017
System.Windows.Markup.XamlParseException
I have written a WPF application, on my compuyter it is running ok. Now I am trying to deploy wpf application on W7 computer. And getting following exception:
Any idea what is wrong here ?
6 Answers 6
This type of exception is common when some part of your main window constructor or load operations fail. If you can get your hands on the stack trace, look to the inner exception and you will probably find the real issue.
I had this problem because I was showing a form from in Application constructor. This form was using Style=»
I solved the problem by showing the form at a later stage in the application, when the Application object was fully constructed.
I had the same exception report. I could solve it by using the windbg program.
- download the windbg x86 (not x64) version.
- open the .exe file of the app in it (File menu -> open exe.)
- run these commands to see the real exception:
After the analysis, I found that the System.Net.Http.Formatting assembly was missing from the system.
the only thing I can think of is whether both boxes have same .NET version on it. NET 4 has some new features (re XAML parser) that 3.5 SP1 doesnt have
I noticed a similar behavior when installing a ClickOnce app on a clean machine. I solved by setting the requirements of the app for install both .Net 4 and .Net 3.5 full.
It was not happened anymore.
Make sure you are build in the correct architecture x86 or x64 when you run on the target machine. I face the same problem as well, the app able to run on my thumbdrive FAT32 however it failed on another machine with Windows 7 — 32bit (I know Windows 7 with 32bit is quite odd though) see http://social.msdn.microsoft.com/Forums/vstudio/en-US/8f803f28-dfda-4be5-9e8d-f7d82db95961/c-wpf-systemwindowsmarkupxamlparseexception?forum=wpf
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Xaml Parse Exception Class
Definition
Represents the exception class for parser-specific exceptions from a WPF XAML parser. This exception is used in XAML API or WPF XAML parser operations from .NET Framework 3.0 and .NET Framework 3.5, or for specific use of the WPF XAML parser by calling XamlReader API.
Remarks
XamlParseException is used only for the WPF-implemented XAML parser that performs the XAML parsing and loading for WPF applications. Specifically, the exception is only relevant when an application targets .NET Framework 3.0 and .NET Framework 3.5. The exception can also originate from user code in run-time calls to APIs that hook up the WPF-implemented XAML parser to load XAML from within a running WPF application (for example, calls to XamlReader.Load).
For .NET Framework 4, the XamlParseException exception that typically reports XAML processing exceptions is defined in a different namespace (System.Xaml) and a different assembly (System.Xaml).
Unless you are writing an equivalent to the WPF XAML parser or working with .NET Framework 3.0 and .NET Framework 3.5 targeting, you generally will not throw XamlParseException from your own code. However, handling for the exception is sometimes necessary. For application scenarios, where you may want to suppress XAML parse errors, a Dispatcher UnhandledException event handler at the application level is one way to handle a run-time XamlParseException. Whether to suppress exceptions or let them surface to user code depends on how you design your application for purposes of loading XAML, and the trust level that you assign to the XAML your application loads. For more information, see XAML Security Considerations or «XAML Security» section of XAML Overview (WPF).
For pages of an application, when the XamlParseException is thrown, it is usually in the context of the InitializeComponent call made by your page class, which is the entry point for the WPF application model’s usage of the WPF XAML parser at the per-page level. Therefore another possible handling strategy is to place try/catch blocks in InitializeComponent . However, this technique does not integrate well with templates, visual design surfaces and other generated sources that hook up InitializeComponent .
Constructors
Initializes a new instance of the XamlParseException class.
Initializes a new instance of the XamlParseException class.
Initializes a new instance of the XamlParseException class, using the specified exception message string.
Initializes a new instance of the XamlParseException class, using the specified exception message string and inner exception.
Initializes a new instance of the XamlParseException class, using the specified exception message string, and the specified line number and position in the line.
Initializes a new instance of the XamlParseException class, using the specified exception message, inner exception, line number, and position in the line.
Properties
Gets base URI information when the exception is thrown.
Gets a collection of key/value pairs that provide additional user-defined information about the exception.
Gets or sets a link to the help file associated with this exception.
Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.
Gets the Exception instance that caused the current exception.
Gets or sets the key value of the item in a dictionary where the exception occurred.
Gets the line number where the exception occurred.
Gets the position in the line where the exception occurred.
Gets a message that describes the current exception.
Gets or sets the XAML name of the object where the exception occurred.
Gets or sets the name of the application or the object that causes the error.
Gets a string representation of the immediate frames on the call stack.
Gets the method that throws the current exception.
Gets or sets the x:Uid Directive of the object where the exception occurred.
Methods
Determines whether the specified object is equal to the current object.
When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.
Serves as the default hash function.
Gets the data that is required to serialize the specified object by populating the specified SerializationInfo object.
Gets the runtime type of the current instance.
Creates a shallow copy of the current Object.
Creates and returns a string representation of the current exception.
Events
Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.