EPLAN_PROD_Plugin/Sinvo.EplanHpD.Plugin.WPFUI/Themes/Theme.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/SkinDefault.xaml" />
        <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/Theme.xaml" />
    </ResourceDictionary.MergedDictionaries>
    <Style BasedOn="{StaticResource DataGridBaseStyle}" TargetType="DataGrid">
        <Setter Property="RowHeight" Value="NaN" />
    </Style>
</ResourceDictionary>