C# – this error: System.Runtime.InteropServices.COMException

.net-4.0cwpf

I keep getting this error:

System.Runtime.InteropServices.COMException was thrown on "C:\Users\---\documents\visual studio 2010\Projects\TBrowser\TBrowser\TBrowserWindow.xaml": Error HRESULT E_FAIL has been returned from a call to a COM component.

But I don't have a COM component in my .xaml file. It keeps popping up and saying the position of the error is line 1 column 1 and I just have a Window there and nothing else:

<Window x:Class="TBrowser.TBrowserWindow"
        xmlns:my="clr-namespace:TBrowser"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Height="800" Width="900" Icon="/TBrowser;component/Images/Icons/Icon.ico" MinHeight="143" MinWidth="358" Background="White" Loaded="Window_Loaded" Name="TBWindow1">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Themes/Generic.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>

    <DockPanel x:Name="Layout">
        <StatusBar Height="24" Name="TBStatusBar1" Background="WhiteSmoke" BorderBrush="Black" BorderThickness="0,1,0,0" VerticalContentAlignment="Bottom" DockPanel.Dock="Bottom">
            <StatusBarItem Width="300" HorizontalAlignment="Left" Padding="1" />
            <StatusBarItem HorizontalAlignment="Right" Padding="0" Margin="1" VerticalContentAlignment="Stretch">
                <ProgressBar Width="146" Height="18" HorizontalAlignment="Left" Margin="1" Name="TBProgessBar1"></ProgressBar>
            </StatusBarItem>
        </StatusBar>

        <my:TBOutputPannel x:Name="TBOutputPannel1" DockPanel.Dock="Bottom" MinHeight="48" MaxHeight="200" Visibility="Collapsed" />

        <my:TBControlBar Height="48" VerticalAlignment="Top" x:Name="TBControlBar1" DockPanel.Dock="Top">
            <my:TBControlBar.ContextMenu>
                <ContextMenu>
                    <MenuItem Header="Menubar" IsCheckable="True" IsChecked="True" />
                    <MenuItem Header="Favsbar" IsCheckable="True" IsChecked="True" />
                    <MenuItem Header="Statusbar" IsCheckable="True" IsChecked="True" />
                </ContextMenu>
            </my:TBControlBar.ContextMenu>
        </my:TBControlBar>
        <Grid DockPanel.Dock="Bottom">
            <my:TBTabControl x:Name="TBTabControl1">
                <my:TBAddTabItem Height="28" HorizontalAlignment="Left" IsSelected="False" Margin="0" x:Name="TBAddTabItem" VerticalAlignment="Top" Width="28"></my:TBAddTabItem>
            </my:TBTabControl>
            <Menu Height="24" Name="TBMenu1" VerticalAlignment="Top" Margin="0,29,0,0" Background="WhiteSmoke">
                <MenuItem Header="File">
                    <MenuItem Header="New tab" InputGestureText="Ctrl+T" Click="MenuItem_Click">
                        <MenuItem.Icon>
                            <Image Source="/TBrowser;component/Images/Images/TBNewTabIcon1.png" />
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="Duplicate tab" InputGestureText="Ctrl+K" Click="MenuItem_Click_1" />
                    <MenuItem Header="New window" InputGestureText="Ctrl+N" />
                    <MenuItem Header="New session" />
                    <MenuItem Command="ApplicationCommands.Open" Header="Open" />
                    <MenuItem Header="Edit with Notepad" />
                    <MenuItem Command="ApplicationCommands.Save" Header="Save" IsEnabled="False" />
                    <MenuItem Command="ApplicationCommands.SaveAs" Header="Save As..." InputGestureText="Ctrl+S" />
                    <MenuItem Header="Close tab" InputGestureText="Ctrl+W" />
                    <Separator />
                    <MenuItem Header="Page setup" />
                    <MenuItem Command="ApplicationCommands.Print" Header="Print" InputGestureText="Ctrl+P" />
                    <MenuItem Command="ApplicationCommands.PrintPreview" Header="Print preview" />
                    <MenuItem />
                </MenuItem>
            </Menu>
            <ToolBar Height="24" Margin="0,52,0,0" Name="TBFavsbar1" VerticalAlignment="Top" Style="{StaticResource TBFavsbar}">
                <my:TBFavsItem isAdder="True" IconSource="/TBrowser;component/Images/Images/TBAddFavs1.png" Margin="2,1,0,0" />
                <Separator Margin="2,1,0,0" />
            </ToolBar>
        </Grid>
    </DockPanel>

    <Window.TaskbarItemInfo>
        <TaskbarItemInfo x:Name="Display" />
    </Window.TaskbarItemInfo>
</Window>

I even keep getting this error:

System.NullReferenceException was unhandled by user code
  Message=Object reference not set to an instance of an object.
  Source=TBrowser
  StackTrace:
       at TBrowser.TBrowserWindow.TBMenubar1ShowButton_Checked(Object sender, RoutedEventArgs e) in C:\Users\---\documents\visual studio 2010\Projects\TBrowser\TBrowser\TBrowserWindow.xaml.cs:line 137
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
       at System.Windows.Controls.MenuItem.OnChecked(RoutedEventArgs e)
       at System.Windows.Controls.MenuItem.OnIsCheckedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
       at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
       at System.Windows.Baml2006.WpfKnownMemberInvoker.SetValue(Object instance, Object value)
       at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value)
       at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)

And this is what im using:

private void TBMenubar1ShowButton_Checked(object sender, RoutedEventArgs e)
{
    TBMenu1.Visibility = System.Windows.Visibility.Visible;
    TBrowser.Properties.Settings.Default.Menubar = System.Windows.Visibility.Visible;
}

And I don't get whats going on.

Best Answer

I think its caused by sending a 64 bit INT to an application that expects a 32 bit INT for example, to resolve (if it is this issue) follow the steps below.

Right click the Project (in Solution Explorer) -> Properties, Build Tab, Platform target set x86. Then do a Clean-Build and give it a whirl.

Platform Target

This is the style that Microsoft tends to use in their examples.

It appears that the guidance in this area may have changed, as StyleCop now enforces the use of the C# specific aliases.

C# – What are the correct version numbers for C#

C# language version history:

These are the versions of C# known about at the time of this writing:

C# 1.0 released with .NET 1.0 and VS2002 (January 2002)
C# 1.2 (bizarrely enough); released with .NET 1.1 and VS2003 (April 2003). First version to call Dispose on IEnumerators which implemented IDisposable. A few other small features.
C# 2.0 released with .NET 2.0 and VS2005 (November 2005). Major new features: generics, anonymous methods, nullable types, and iterator blocks
C# 3.0 released with .NET 3.5 and VS2008 (November 2007). Major new features: lambda expressions, extension methods, expression trees, anonymous types, implicit typing (var), and query expressions
C# 4.0 released with .NET 4 and VS2010 (April 2010). Major new features: late binding (dynamic), delegate and interface generic variance, more COM support, named arguments, tuple data type and optional parameters
C# 5.0 released with .NET 4.5 and VS2012 (August 2012). Major features: async programming, and caller info attributes. Breaking change: loop variable closure.
C# 6.0 released with .NET 4.6 and VS2015 (July 2015). Implemented by Roslyn. Features: initializers for automatically implemented properties, using directives to import static members, exception filters, element initializers, await in catch and finally, extension Add methods in collection initializers.
C# 7.0 released with .NET 4.7 and VS2017 (March 2017). Major new features: tuples, ref locals and ref return, pattern matching (including pattern-based switch statements), inline out parameter declarations, local functions, binary literals, digit separators, and arbitrary async returns.
C# 7.1 released with VS2017 v15.3 (August 2017). New features: async main, tuple member name inference, default expression, and pattern matching with generics.
C# 7.2 released with VS2017 v15.5 (November 2017). New features: private protected access modifier, Span<T>, aka interior pointer, aka stackonly struct, and everything else.
C# 7.3 released with VS2017 v15.7 (May 2018). New features: enum, delegate and unmanaged generic type constraints. ref reassignment. Unsafe improvements: stackalloc initialization, unpinned indexed fixed buffers, custom fixed statements. Improved overloading resolution. Expression variables in initializers and queries. == and != defined for tuples. Auto-properties' backing fields can now be targeted by attributes.
C# 8.0 released with .NET Core 3.0 and VS2019 v16.3 (September 2019). Major new features: nullable reference-types, asynchronous streams, indices and ranges, readonly members, using declarations, default interface methods, static local functions, and enhancement of interpolated verbatim strings.
C# 9.0 released with .NET 5.0 and VS2019 v16.8 (November 2020). Major new features: init-only properties, records, with-expressions, data classes, positional records, top-level programs, improved pattern matching (simple type patterns, relational patterns, logical patterns), improved target typing (target-type new expressions, target typed ?? and ?), and covariant returns. Minor features: relax ordering of ref and partial modifiers, parameter null checking, lambda discard parameters, native ints, attributes on local functions, function pointers, static lambdas, extension GetEnumerator, module initializers, and extending partial.

In response to the OP's question:

What are the correct version numbers for C#? What came out when? Why can't I find any answers about C# 3.5?

There is no such thing as C# 3.5 - the cause of confusion here is that the C# 3.0 is present in .NET 3.5. The language and framework are versioned independently, however - as is the CLR, which is at version 2.0 for .NET 2.0 through 3.5, .NET 4 introducing CLR 4.0, service packs notwithstanding. The CLR in .NET 4.5 has various improvements, but the versioning is unclear: in some places it may be referred to as CLR 4.5 (this MSDN page used to refer to it that way, for example), but the Environment.Version property still reports 4.0.xxx.

As of May 3, 2017, the C# Language Team created a history of C# versions and features on their GitHub repository: Features Added in C# Language Versions. There is also a page that tracks upcoming and recently implemented language features.

Best Answer

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C# – the difference between String and string in C#

This is the style that Microsoft tends to use in their examples.

C# – What are the correct version numbers for C#

C# language version history:

In response to the OP's question:

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