A ListView is a specialized ListBox (that is, it inherits from ListBox).  It allows you to specify different views rather than a straight list. You can either roll your own view, or use GridView (think explorer-like &quot;details view&quot;).   It&#39;s basically the multi-column listbox, the cousin of windows form&#39;s listview.

If you don&#39;t need the additional capabilities of ListView, you can certainly use ListBox if you&#39;re simply showing a list of items (Even if the template is complex).  

I found the discussion on [Do you test private method][1] informative.

I have decided, that in some classes, I want to have protected methods, but test them.
Some of these methods are static and short. Because most of the public methods make use of them, I will probably be able to safely remove the tests later. But for starting with a TDD approach and avoid debugging, I really want to test them.

I thought of the following:

  - [Method Object][2] as adviced in [an answer][3] seems to be overkill for this.
  - Start with public methods and when code coverage is given by higher level tests, turn them protected and remove the tests.
  - Inherit a class with a testable interface making protected methods public

Which is best practice? Is there anything else?

It seems, that JUnit automatically changes protected methods to be public, but I did not have a deeper look at it. PHP does not allow this via [reflection][4].


  [1]: https://stackoverflow.com/questions/105007/do-you-test-private-method
  [2]: http://www.refactoring.com/catalog/replaceMethodWithMethodObject.html
  [3]: https://stackoverflow.com/questions/105007/do-you-test-private-method#105021
  [4]: http://php.net/language.oop5.reflection

Best practices to test protected methods with PHPUnit

We are logging any exceptions that happen in our system by writing the Exception.Message to a file. However, they are written in the culture of the client. And Turkish errors don&#39;t mean a lot to me.

So how can we log any error messages in English without changing the users culture?

Exception messages in English?

I&#39;m considering either a ListBox or a ListView for a WPF application.  It seems either supports data binding and item templates.  My application has a simple list of items that I intend to be able to search/sort/filter based on user input.  The data binding demo (http://msdn.microsoft.com/en-us/library/ms771319.aspx) uses a ListBox with a CollectionViewSource.  

Does anyone have pros/cons for which control to use and when?

ListBox vs. ListView - how to choose for data binding

<p>I'm considering either a ListBox or a ListView for a WPF application.  It seems either supports data binding and item templates.  My application has a simple list of items that I intend to be able to search/sort/filter based on user input.  The data binding demo (<a href="http://msdn.microsoft.com/en-us/library/ms771319.aspx" target="_blank" rel="noopener noreferrer">http://msdn.microsoft.com/en-us/library/ms771319.aspx</a>) uses a ListBox with a CollectionViewSource.</p>
<p>Does anyone have pros/cons for which control to use and when?</p>


What does `InitializeComponent()` do, and how does it work in WPF?

In general first, but I would especially be interested to know the gory details of order of construction, and what happens when there are Attached Properties.

What does InitializeComponent() do, and how does it work in WPF?

I am trying to build a dropdown list for a winform interop, and I am creating the dropdown in code. However, I have a problem getting the data to bind based on the DataTemplate I specify.

What am I missing?

    drpCreditCardNumberWpf = new ComboBox();  
    DataTemplate cardLayout = new DataTemplate {DataType = typeof (CreditCardPayment)};   
    StackPanel sp = new StackPanel
    {
        Orientation = System.Windows.Controls.Orientation.Vertical
    };   
 
    TextBlock cardHolder = new TextBlock {ToolTip = &quot;Card Holder Name&quot;};
    cardHolder.SetBinding(TextBlock.TextProperty, &quot;BillToName&quot;);
    sp.Children.Add(cardHolder);

    TextBlock cardNumber = new TextBlock {ToolTip = &quot;Credit Card Number&quot;};
    cardNumber.SetBinding(TextBlock.TextProperty, &quot;SafeNumber&quot;);
    sp.Children.Add(cardNumber);

    TextBlock notes = new TextBlock {ToolTip = &quot;Notes&quot;};
    notes.SetBinding(TextBlock.TextProperty, &quot;Notes&quot;);
    sp.Children.Add(notes);

    cardLayout.Resources.Add(sp, null);

    drpCreditCardNumberWpf.ItemTemplate = cardLayout;

How do I build a DataTemplate in c# code?

I have a listbox, and I have the following ItemTemplate for it:

    &lt;DataTemplate x:Key=&quot;ScenarioItemTemplate&quot;&gt;
    	&lt;Border Margin=&quot;5,0,5,0&quot;
    			Background=&quot;#FF3C3B3B&quot;
    			BorderBrush=&quot;#FF797878&quot;
    			BorderThickness=&quot;2&quot;
    			CornerRadius=&quot;5&quot;&gt;
    		&lt;DockPanel&gt;
    			&lt;DockPanel DockPanel.Dock=&quot;Top&quot;
    					   Margin=&quot;0,2,0,0&quot;&gt;
    				&lt;Button HorizontalAlignment=&quot;Left&quot;
    						DockPanel.Dock=&quot;Left&quot;
    						FontWeight=&quot;Heavy&quot;
    						Foreground=&quot;White&quot; /&gt;
    				&lt;Label Content=&quot;{Binding Path=Name}&quot;
    					   DockPanel.Dock=&quot;Left&quot;
    					   FontWeight=&quot;Heavy&quot;
    					   Foreground=&quot;white&quot; /&gt;
    				&lt;Label HorizontalAlignment=&quot;Right&quot;
    					   Background=&quot;#FF3C3B3B&quot;
    					   Content=&quot;X&quot;
    					   DockPanel.Dock=&quot;Left&quot;
    					   FontWeight=&quot;Heavy&quot;
    					   Foreground=&quot;White&quot; /&gt;
    			&lt;/DockPanel&gt;
    			&lt;ContentControl Name=&quot;designerContent&quot;
    							Visibility=&quot;Collapsed&quot;
    							MinHeight=&quot;100&quot;
    							Margin=&quot;2,0,2,2&quot;
    							Content=&quot;{Binding Path=DesignerInstance}&quot;
    							Background=&quot;#FF999898&quot;&gt;
    			&lt;/ContentControl&gt;
    		&lt;/DockPanel&gt;
    	&lt;/Border&gt;
    &lt;/DataTemplate&gt;


As you can see the ContentControl has Visibility set to collapsed.

I need to define a trigger that causes the Visibility to be set to &quot;Visible&quot;


when the ListItem is selected, but I can&#39;t figure it out.

Any ideas? 

UPDATE: Of course I could simply duplicate the DataTemplate and add triggers
to the ListBox in question to use either one or the other, but I want to prevent duplicating this code.

WPF Trigger for IsSelected in a DataTemplate for ListBox items

What I am looking for is the equivalent of `System.Windows.SystemParameters.WorkArea` for the monitor that the window is currently on.

**Clarification:**  The window in question is `WPF`, not `WinForm`.


How can I get the active screen dimensions?

How can I bring my WPF application to the front of the desktop? So far I&#39;ve tried:

    SwitchToThisWindow(new WindowInteropHelper(Application.Current.MainWindow).Handle, true);
    
    SetWindowPos(new WindowInteropHelper(Application.Current.MainWindow).Handle, IntPtr.Zero, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
    
    SetForegroundWindow(new WindowInteropHelper(Application.Current.MainWindow).Handle);

None of which are doing the job (`Marshal.GetLastWin32Error()` is saying these operations completed successfully, and the P/Invoke attributes for each definition do have `SetLastError=true`).

If I create a new blank WPF application, and call `SwitchToThisWindow` with a timer, it works exactly as expected, so I&#39;m not sure why it&#39;s not working in my original case.

**Edit**: I&#39;m doing this in conjunction with a global hotkey.


Bring a window to the front in WPF

Does anyone know how to databind the .Source property of the WebBrowser in WPF ( 3.5SP1 )?
I have a listview that I want to have a small WebBrowser on the left, and content on the right, and to databind the source of each WebBrowser with the URI in each object bound to the list item.

This is what I have as a proof of concept so far, but the &quot;`&lt;WebBrowser Source=&quot;{Binding Path=WebAddress}&quot;`&quot; does not compile.

 

    &lt;DataTemplate x:Key=&quot;dealerLocatorLayout&quot; DataType=&quot;DealerLocatorAddress&quot;&gt;                
        &lt;StackPanel Orientation=&quot;Horizontal&quot;&gt;
             &lt;!--Web Control Here--&gt;
            &lt;WebBrowser Source=&quot;{Binding Path=WebAddress}&quot;
                ScrollViewer.HorizontalScrollBarVisibility=&quot;Disabled&quot; 
                ScrollViewer.VerticalScrollBarVisibility=&quot;Disabled&quot; 
                Width=&quot;300&quot;
                Height=&quot;200&quot;
                /&gt;
            &lt;StackPanel Orientation=&quot;Vertical&quot;&gt;
                &lt;StackPanel Orientation=&quot;Horizontal&quot;&gt;
                    &lt;Label Content=&quot;{Binding Path=CompanyName}&quot; FontWeight=&quot;Bold&quot; Foreground=&quot;Blue&quot; /&gt;
                    &lt;TextBox Text=&quot;{Binding Path=DisplayName}&quot; FontWeight=&quot;Bold&quot; /&gt;
                &lt;/StackPanel&gt;
                &lt;TextBox Text=&quot;{Binding Path=Street[0]}&quot; /&gt;
                &lt;TextBox Text=&quot;{Binding Path=Street[1]}&quot; /&gt;
                &lt;TextBox Text=&quot;{Binding Path=PhoneNumber}&quot;/&gt;
                &lt;TextBox Text=&quot;{Binding Path=FaxNumber}&quot;/&gt;
                &lt;TextBox Text=&quot;{Binding Path=Email}&quot;/&gt;
                &lt;TextBox Text=&quot;{Binding Path=WebAddress}&quot;/&gt;
            &lt;/StackPanel&gt;
        &lt;/StackPanel&gt;
    &lt;/DataTemplate&gt;



databind the Source property of the WebBrowser in WPF

I have a 2-dimensional array of objects and I basically want to databind each one to a cell in a WPF grid.  Currently I have this working but I am doing most of it procedurally.  I create the correct number of row and column definitions, then I loop through the cells and create the controls and set up the correct bindings for each one.  

At a minimum I would like to be able to use a template to specify the controls and bindings in xaml.  Ideally I would like to get rid of the procedural code and just do it all with databinding, but I&#39;m not sure that&#39;s possible.

Here is the code I am currently using:

    public void BindGrid()
    {
        m_Grid.Children.Clear();
        m_Grid.ColumnDefinitions.Clear();
        m_Grid.RowDefinitions.Clear();

        for (int x = 0; x &lt; MefGrid.Width; x++)
        {
            m_Grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star), });
        }

        for (int y = 0; y &lt; MefGrid.Height; y++)
        {
            m_Grid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star), });
        }

        for (int x = 0; x &lt; MefGrid.Width; x++)
        {
            for (int y = 0; y &lt; MefGrid.Height; y++)
            {
                Cell cell = (Cell)MefGrid[x, y];                    

                SolidColorBrush brush = new SolidColorBrush();

                var binding = new Binding(&quot;On&quot;);
                binding.Converter = new BoolColorConverter();
                binding.Mode = BindingMode.OneWay;

                BindingOperations.SetBinding(brush, SolidColorBrush.ColorProperty, binding);

                var rect = new Rectangle();
                rect.DataContext = cell;
                rect.Fill = brush;
                rect.SetValue(Grid.RowProperty, y);
                rect.SetValue(Grid.ColumnProperty, x);
                m_Grid.Children.Add(rect);
            }
        }
        
    }

How to populate a WPF grid based on a 2-dimensional array

When implementing the ViewModel in a Model-View-ViewModel architecture WPF application there seem to be two major choices how to make it databindable. I have seen implementations that use `DependencyProperty` for properties the View is going to bind against and I have seen the ViewModel implementing `INotifyPropertyChanged` instead. 

My question is when should I prefer one over the other? Are there any performance differences? Is it really a good idea to give the ViewModel dependencies to WPF? What else do I need to consider when make the design decision?

INotifyPropertyChanged vs. DependencyProperty in ViewModel

My WPF application generates sets of data which may have a different number of columns each time.  Included in the output is a description of each column that will be used to apply formatting.  A simplified version of the output might be something like:

    class Data
    {
        IList&lt;ColumnDescription&gt; ColumnDescriptions { get; set; }
        string[][] Rows { get; set; }
    }

This class is set as the DataContext on a WPF DataGrid but I actually create the columns programmatically:

    for (int i = 0; i &lt; data.ColumnDescriptions.Count; i++)
    {
        dataGrid.Columns.Add(new DataGridTextColumn
        {
            Header = data.ColumnDescriptions[i].Name,
            Binding = new Binding(string.Format(&quot;[{0}]&quot;, i))
        });
    }

Is there any way to replace this code with data bindings in the XAML file instead?

How do I bind a WPF DataGrid to a variable number of columns?

Say I have an interface like this:

    public interface ISomeInterface
    {
    ...
    }

I also have a couple of classes implementing this interface;

    public class SomeClass : ISomeInterface
    {
    ...
    }

Now I have a WPF ListBox listing items of ISomeInterface, using a custom DataTemplate.

The databinding engine will apparently not (that I have been able to figure out) allow me to bind to interface properties - it sees that the object is a SomeClass object, and data only shows up if SomeClass should happen to have the bound property available as a non-interface property. 

How can I tell the DataTemplate to act as if every object is an ISomeInterface, and not a SomeClass etc.?

Thanks!


WPF databinding to interface and not actual object - casting possible?

I have a WPF ListView which repeats the data vertically. I cannot figure out how to make it repeat horizontally, like the slideshow view in Windows Explorer. My current ListView definition is:

    &lt;ListView ItemsSource=&quot;{StaticResource MyDataList}&quot; ItemTemplate=&quot;{StaticResource ListViewTemplate}&quot;&gt;
    &lt;/ListView&gt;

The DataTemplate is (although I believe this should not matter);
 &lt;DataTemplate x:Key=&quot;ListViewTemplate&quot;&gt;
            &lt;Border Margin=&quot;3&quot; Padding=&quot;3&quot; BorderBrush=&quot;Blue&quot; BorderThickness=&quot;2&quot; CornerRadius=&quot;4&quot;&gt;
                &lt;Grid&gt;
                    &lt;Grid.RowDefinitions&gt;
                        &lt;RowDefinition Height=&quot;54&quot; /&gt;
                        &lt;RowDefinition /&gt;
                    &lt;/Grid.RowDefinitions&gt;
                    &lt;Grid.ColumnDefinitions&gt;
                        &lt;ColumnDefinition Width=&quot;100&quot;/&gt;
                    &lt;/Grid.ColumnDefinitions&gt;
                    &lt;Image x:Name=&quot;imgPhoto&quot; Width=&quot;80&quot; Height=&quot;60&quot; Grid.Row=&quot;0&quot; Source=&quot;{Binding Path=InstanceState.OverlayPath}&quot; RenderTransformOrigin=&quot;0.5,0.5&quot;&gt;
                        &lt;Image.RenderTransform&gt;
                            &lt;TransformGroup&gt;
                                &lt;ScaleTransform ScaleX=&quot;1&quot; ScaleY=&quot;1&quot;/&gt;
                                &lt;SkewTransform AngleX=&quot;0&quot; AngleY=&quot;0&quot;/&gt;
                                &lt;RotateTransform Angle=&quot;0&quot;/&gt;
                                &lt;TranslateTransform X=&quot;0&quot; Y=&quot;0&quot;/&gt;
                            &lt;/TransformGroup&gt;
                        &lt;/Image.RenderTransform&gt;
                    &lt;/Image&gt;

                    &lt;Rectangle HorizontalAlignment=&quot;Stretch&quot; Margin=&quot;0,1,0,0&quot; x:Name=&quot;rectReflection&quot; Width=&quot;Auto&quot; Grid.Row=&quot;1&quot; Height=&quot;30&quot;&gt;
                        &lt;Rectangle.Fill&gt;
                            &lt;VisualBrush Stretch=&quot;None&quot; AlignmentX=&quot;Center&quot; AlignmentY=&quot;Top&quot; Visual=&quot;{Binding ElementName=imgPhoto}&quot;&gt;
                                &lt;VisualBrush.RelativeTransform&gt;
                                    &lt;TransformGroup&gt;
                                        &lt;MatrixTransform Matrix=&quot;1,0,0,-1,0,0&quot; /&gt;
                                        &lt;TranslateTransform Y=&quot;1&quot; /&gt;
                                    &lt;/TransformGroup&gt;
                                &lt;/VisualBrush.RelativeTransform&gt;
                            &lt;/VisualBrush&gt;
                        &lt;/Rectangle.Fill&gt;
                        &lt;Rectangle.OpacityMask&gt;
                            &lt;RadialGradientBrush GradientOrigin=&quot;0.5,1.041&quot;&gt;
                                &lt;RadialGradientBrush.RelativeTransform&gt;
                                    &lt;TransformGroup&gt;
                                        &lt;ScaleTransform CenterX=&quot;0.5&quot; CenterY=&quot;0.5&quot; ScaleX=&quot;1.202&quot; ScaleY=&quot;2.865&quot;/&gt;
                                        &lt;SkewTransform AngleX=&quot;0&quot; AngleY=&quot;0&quot; CenterX=&quot;0.5&quot; CenterY=&quot;0.5&quot;/&gt;
                                        &lt;RotateTransform Angle=&quot;0&quot; CenterX=&quot;0.5&quot; CenterY=&quot;0.5&quot;/&gt;
                                        &lt;TranslateTransform X=&quot;-0.002&quot; Y=&quot;-0.491&quot;/&gt;
                                    &lt;/TransformGroup&gt;
                                &lt;/RadialGradientBrush.RelativeTransform&gt;
                                &lt;GradientStop Color=&quot;#D9000000&quot; Offset=&quot;0&quot;/&gt;
                                &lt;GradientStop Color=&quot;#01FFFFFF&quot; Offset=&quot;0.8&quot;/&gt;
                            &lt;/RadialGradientBrush&gt;
                        &lt;/Rectangle.OpacityMask&gt;
                    &lt;/Rectangle&gt;
                &lt;/Grid&gt;
            &lt;/Border&gt;
        &lt;/DataTemplate&gt;

How do I make WPF ListView items repeat horizontally, like a horizontal scrollbar?

I&#39;m creating a WPF application where several ListView selections are made in a row (similar to the iTunes browser). The problem is that the default inactive selection color is too light. (see below)
![Default inactive selection color (too light)][1]

How can I change this color so my inactive listview looks like this? (see below)
![Inactive and active selection colors the same][2]

Solution
------------

Override the default SystemColor with a `Style` like so:

    &lt;Style TargetType=&quot;ListViewItem&quot;&gt;
        &lt;Style.Resources&gt;
            &lt;SolidColorBrush x:Key=&quot;{x:Static SystemColors.ControlBrushKey}&quot; Color=&quot;{x:Static SystemColors.HighlightColor}&quot;/&gt;
        &lt;/Style.Resources&gt;
    &lt;/Style&gt;


  [1]: http://i.stack.imgur.com/hwctc.jpg
  [2]: http://i.stack.imgur.com/aORZ9.jpg


WPF ListView Inactive Selection Color

I have a list view that is periodically updated (every 60 seconds). It was anoying to me that i would get a flicker every time it up dated. The method being used was to clear all the items and then recreate them. I decided to instead of clearing the items I would just write directly to the cell with the new text. Is this a better approach or does anyone have a better solution.


c# flickering Listview on update

How do I display a list of images using the ListView? I am downloading the images at run time. The total number of images is not fixed.


How to display a list of images in a ListView in Android?

To add items to column 1 in my `listView` control (`Winform`) I&#39;m using `listView1.Items.Add`, this works fine but how do I add items to columns 2 and 3 etc? 

C# listView, how do I add items to columns 2, 3 and 4 etc?

This seems to be an absurdly simple question but Google and Stack Overflow searches yield nothing. How can I disable horizontal scrolling in a WPF [ListBox][1] when items take up more horizontal space than is available in the box?


  [1]: https://docs.microsoft.com/en-gb/dotnet/api/system.windows.controls.listbox

How can I disable horizontal scrolling in a WPF ListBox?

I have a WPF listbox which displays messages. It contains an avatar on the left side and the username and message stacked vertically to the right of the avatar. The layout is fine until the message text should word wrap, but instead I get a horizontal scroll bar on the listbox. 

I&#39;ve Googled and found solutions to similar issues, but none of them worked.


    &lt;ListBox HorizontalContentAlignment=&quot;Stretch&quot;  ItemsSource=&quot;{Binding Path=FriendsTimeline}&quot;&gt;
        &lt;ListBox.ItemTemplate&gt;
            &lt;DataTemplate&gt;
                &lt;StackPanel Orientation=&quot;Horizontal&quot;&gt;
                    &lt;Border BorderBrush=&quot;DarkBlue&quot; BorderThickness=&quot;3&quot; CornerRadius=&quot;2&quot; Margin=&quot;3&quot; &gt;
                        &lt;Image Height=&quot;32&quot; Width=&quot;32&quot;  Source=&quot;{Binding Path=User.ProfileImageUrl}&quot;/&gt;
                    &lt;/Border&gt;
                    &lt;StackPanel Orientation=&quot;Vertical&quot;&gt;
                        &lt;TextBlock Text=&quot;{Binding Path=User.UserName}&quot;/&gt;
                        &lt;TextBlock Text=&quot;{Binding Path=Text}&quot; TextWrapping=&quot;WrapWithOverflow&quot;/&gt; &lt;!-- This is the textblock I&#39;m having issues with. --&gt;
                    &lt;/StackPanel&gt;
                &lt;/StackPanel&gt;
            &lt;/DataTemplate&gt;
        &lt;/ListBox.ItemTemplate&gt;
    &lt;/ListBox&gt;



Force TextBlock to wrap in WPF ListBox

In the example below I have a ListBox with dozens of font names in it.

I would have thought it would automatically have a vertical scrollbar on it so that you can select ANY font, not just the first ones in the list, but it doesn&#39;t.

So I added a &quot;ScrollViewer&quot; and that puts a &quot;scrollbar area&quot; on the right but there is no scrollbar in the scrollbar area so that you can scroll (!).

Why isn&#39;t a scrollbar automatic and how do I force it to have a scrollbar?

    &lt;StackPanel Name=&quot;stack1&quot;&gt;
        &lt;Grid&gt;
            &lt;Grid.RowDefinitions&gt;
                &lt;RowDefinition Height=&quot;2*&quot;&gt;&lt;/RowDefinition&gt;
                &lt;RowDefinition Height=&quot;*&quot;&gt;&lt;/RowDefinition&gt;
            &lt;/Grid.RowDefinitions&gt;
            &lt;ScrollViewer&gt;
                &lt;ListBox Grid.Row=&quot;0&quot; Name=&quot;lstFonts&quot; Margin=&quot;3&quot;  ItemsSource=&quot;{x:Static Fonts.SystemFontFamilies}&quot;/&gt;
            &lt;/ScrollViewer&gt;
        &lt;/Grid&gt;
    &lt;/StackPanel&gt;

How can I get a vertical scrollbar in my ListBox?

I have a horizontal listbox with a custom controlIemplate. The selected item gets a dotted frame when focused. Anyone know how to get rid of it?

Content Type	Original Author	Original Content on Stackoverflow
Question	Geoff Cox	View Question on Stackoverflow
Solution 1 - Wpf	Philip Rieck	View Answer on Stackoverflow

ListBox vs. ListView - how to choose for data binding

Wpf Problem Overview

Wpf Solutions

Solution 1 - Wpf

Exception messages in English?

Best practices to test protected methods with PHPUnit

Attributions