How Can I give white space to a string without giving actual space in XAML WPF?

Question

Hi there, I have a string name “Selected application” but I want to write it as “Selected application …” but I don’t want to do this in this way because it’s too much ugly I hope there some other methods are present. I know a method is present in C# called string.padright but I want to do this in WPF using pure XAML and data binding though efficient C# code is welcome.

But one problem is, this String "Selected application" is added from a List<>. I add this string in the last as a simple string. If I apply the string.padright method then my other items of the List is effected as well. I want an efficient way to adding space without adding space manually.

the code from which I add this "Selected application" in the list is :

devices.Insert(devices.Count - 0, new AudioDevice() { Name = "Selected application...", Direction = "Recording", Id = "Idlast", Default = false });  

As you see clearly, in the code Name = "Selected application..." I want to write it as Name = "Selected application ..." depending upon the space I want.

Please give your valuable opinion.

Answer 1

You could try to set the data source string Selected application, set StringFormat when binding to add spaces and . . . .

<Window.DataContext>  
        <local:ViewModel/>  
    </Window.DataContext>  

<ComboBox Name="cb2" Width="400" Height="30" ItemsSource="{Binding List}"    
                 SelectedIndex="{Binding Selected}">  
            <ComboBox.ItemTemplate>  
                <DataTemplate>  
                    <TextBlock Text="{Binding Name, StringFormat='{}{0}\  ...'}">  
                             
                    </TextBlock>  
                </DataTemplate>  
            </ComboBox.ItemTemplate>  
        </ComboBox>  

Update:

    <Window.DataContext>  
            <local:ViewModel/>  
        </Window.DataContext>  
 <Window.Resources>  
        <local:Converter x:Key="converter"/>  
    </Window.Resources>  
    <ComboBox Name="cb2" Width="400" Height="30" ItemsSource="{Binding List}"    
                 SelectedIndex="{Binding Selected}"  DisplayMemberPath="Name" >  
            <ComboBox.ItemContainerStyle>  
                <Style TargetType="{x:Type ComboBoxItem}">  
                    <Setter Property="ContentTemplate">  
                        <Setter.Value>  
                            <DataTemplate>  
                                <StackPanel>  
                                    <TextBlock Text="{Binding Name}" />  
                                </StackPanel>  
                            </DataTemplate>  
                        </Setter.Value>  
                    </Setter>  
                    <Style.Triggers>  
                        <DataTrigger Binding="{Binding Converter={StaticResource converter}, RelativeSource={RelativeSource Self}}" Value="IsLastItem">  
                            <Setter Property="ContentTemplate">  
                                <Setter.Value>  
                                    <DataTemplate>  
                                        <StackPanel>  
                                            <TextBlock  Text="{Binding Name, StringFormat='{}{0}\  ...'}" />  
                                        </StackPanel>  
                                    </DataTemplate>  
                                </Setter.Value>  
                            </Setter>  
                        </DataTrigger>  
                    </Style.Triggers>  
                </Style>  
            </ComboBox.ItemContainerStyle>  
        </ComboBox>  

Codebehind:

253794-combobx-last-item-style-converter.txt

Update2:

The Code:
256297-withespace.txt
The result:

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