C#: [Løst] Exception error, men vet ikke hva som er galt?

[frankhaugen]

Jeg har skrevet en funksjon for å lage 200 linjer i et canvas objekt, objektet skrevet manuelt inn i XAML er ikke et problem men når det jeg skal gjøre dette i kode kresjer compileren, (VS2010), og gir meg feilmelding. vennligst se på koden å feilmeldingen og fortell meg hva jeg gjør galt:

 

public void createGrid()
{
int Ypositions = -1000;
//int Xpositions = -1000;
while (Ypositions &--#60; 1001)
{
	// Create a white Brush
	SolidColorBrush whiteBrush = new SolidColorBrush();
	whiteBrush.Color = Colors.White;

	Line gridLine = new Line();
	gridLine.X1 = 1;
	gridLine.Y1 = 1;
	gridLine.X2 = 1;
	gridLine.Y2 = 2000;
	gridLine.SetValue(Canvas.LeftProperty, 1);
	gridLine.SetValue(Canvas.TopProperty, Ypositions);
	gridLine.Stroke = whiteBrush;
	gridLine.StrokeThickness = 1;
	gridLine.SetValue(Panel.ZIndexProperty, -900);
	Ypositions +=10;
	starfield.Children.Add(gridLine);
}

}

 

Feilmelding:

System.Windows.Markup.XamlParseException was unhandled

Message='The invocation of the constructor on type 'WpfApplication1.MainWindow' that matches the specified binding constraints threw an exception.' Line number '3' and line position '9'.

Source=PresentationFramework

LineNumber=3

LinePosition=9

StackTrace:

at System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri)

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.LoadBamlStreamWithSyncInfo(Stream stream, ParserContext pc)

at System.Windows.Application.LoadComponent(Uri resourceLocator, Boolean bSkipJournaledProperties)

at System.Windows.Application.DoStartup()

at System.Windows.Application.&--#60;.ctor&--#62;b__1(Object unused)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

at System.Windows.Threading.DispatcherOperation.InvokeImpl()

at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)

at System.Threading.ExecutionContext.runTryCode(Object userData)

at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Windows.Threading.DispatcherOperation.Invoke()

at System.Windows.Threading.Dispatcher.ProcessQueue()

at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)

at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)

at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)

at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)

at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)

at System.Windows.Application.RunDispatcher(Object ignore)

at System.Windows.Application.RunInternal(Window window)

at System.Windows.Application.Run(Window window)

at System.Windows.Application.Run()

at WpfApplication1.App.Main() in C:\Users\Frank Haugen\Documents\Visual Studio 2010\Projects\WpfApplication1\WpfApplication1\obj\x86\Debug\App.g.cs:line 0

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException: System.ArgumentException

Message='0' is not a valid value for property 'Left'.

Source=WindowsBase

StackTrace:

at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)

at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)

at WpfApplication1.MainWindow.createGrid() in C:\Users\Frank Haugen\Documents\Visual Studio 2010\Projects\WpfApplication1\WpfApplication1\MainWindow.xaml.cs:line 107

at WpfApplication1.MainWindow..ctor() in C:\Users\Frank Haugen\Documents\Visual Studio 2010\Projects\WpfApplication1\WpfApplication1\MainWindow.xaml.cs:line 27

InnerException:

 

takk for all hjelp!!!

 

-frank

Endret 30. mars 2012 av frankhaugen

[GeirGrusom]

Message='0' is not a valid value for property 'Left'.

[frankhaugen]

Message='0' is not a valid value for property 'Left'.

Takk, jeg fant dog en bedre måte å gjøre dette på

 

-frank

 

PS: Det er visst bare du GeirGrusom som er til noe hjelp i C# underforumet, og du gjør en god jobb, kansje du burde blir moderator/forumveileder XD