Copy of https://www.codeproject.com/Tips/469452/WPF-ExceptionViewer
Licence: https://www.codeproject.com/info/cpol10.aspx
Nuget: https://www.nuget.org/packages/WpfExceptionViewer2 \

Supported frameworks

• net45
• netcoreapp3.1

Usage

App.xaml

<ResourceDictionary>
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="pack://application:,,,/WpfExceptionViewer2;component/DarkColors.xaml" />
        
        <!--or bright colors-->
        <!--<ResourceDictionary Source="pack://application:,,,/WpfExceptionViewer2;component/BrightColors.xaml" />-->
    </ResourceDictionary.MergedDictionaries>

    <!--or custom colors-->
    <!--
    <SolidColorBrush x:Key="BackgroundBrush"
         options:Freeze="True"
         Color="Pink" />

    <SolidColorBrush x:Key="ForegroundBrush"
         options:Freeze="True"
         Color="Green" />
    -->
</ResourceDictionary>

Invoke Dialog

WpfExceptionViewer.ExceptionViewer.DefaultTitle = "Sorry";
new WpfExceptionViewer.ExceptionViewer(ex.Message, ex).Show();