String Converters

These converters work with string values, converting them to booleans, images, or other formats for UI binding.

StringToBoolConverter

• Namespace: GenHub.Infrastructure.Converters
• Purpose: Converts string values to boolean based on whether they have content
• Parameters:
  • ConverterParameter: Set to "invert" to invert the logic (empty string = true)
• Return Type: bool

Basic Usage

<Button IsEnabled="{Binding SearchText, Converter={StaticResource StringToBoolConverter}}" />

Inverted Logic

<TextBlock IsVisible="{Binding ErrorMessage, Converter={StaticResource StringToBoolConverter},
                               ConverterParameter='invert'}" />

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StringToImageConverter

• Namespace: GenHub.Infrastructure.Converters
• Purpose: Converts string file paths to Avalonia Bitmap objects for image display
• Supported Formats:
  • Local file paths
  • avares:// URIs (embedded resources)
  • Web URLs (returns null for async loading)
• Return Type: Bitmap or null

File Path Usage

<Image Source="{Binding ImagePath, Converter={StaticResource StringToImageConverter}}" />

Embedded Resource Usage

<Image Source="{Binding 'avares://GenHub/Assets/Icons/default.png',
                        Converter={StaticResource StringToImageConverter}}" />

Error Handling

The converter gracefully handles invalid paths by returning null, preventing binding errors.

Real Usage in GameProfileCardView.axaml

<!-- Profile icon display -->
<Image Source="{Binding IconPath, Converter={StaticResource StringToImageConverter}}" 
       Width="40" Height="40" />

Real Usage in GameProfileSettingsWindow.axaml

<!-- Profile icon in settings -->
<Image Source="{Binding IconPath, Converter={StaticResource StringToImageConverter}, Mode=OneWay}" />

<!-- Game version icons -->
<Image Source="{Binding Path, Converter={StaticResource StringToImageConverter}}" />

<!-- Multiple icon displays for different game assets -->
<Image Source="{Binding Path, Converter={StaticResource StringToImageConverter}}" />
<Image Source="{Binding Path, Converter={StaticResource StringToImageConverter}}" />
<Image Source="{Binding Path, Converter={StaticResource StringToImageConverter}}" />

Real Usage Patterns

<!-- Build preset visibility -->
<Border IsVisible="{Binding BuildPreset, Converter={StaticResource NotNullOrEmptyConverter}}">
    <TextBlock Text="{Binding BuildPreset}" />
</Border>

<!-- Command line arguments display -->
<Border IsVisible="{Binding CommandLineArguments, Converter={StaticResource NotNullOrEmptyConverter}}">
    <TextBlock Text="{Binding CommandLineArguments}" />
</Border>