Как скруглить углы где названия колонок
Стиль таблицы
<Style TargetType="DataGrid">
<Setter Property="Background" Value="#6959f2"/>
<Setter Property="Foreground" Value="White"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="FontSize" Value="14"/>
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="VerticalAlignment" Value="Top"/>
<Setter Property="RowHeight" Value="35"/>
<Setter Property="ColumnHeaderHeight" Value="40"/>
<Setter Property="CellStyle">
<Setter.Value>
<Style TargetType="DataGridCell">
<Setter Property="Foreground" Value="Black"/>
<Setter Property="HorizontalAlignment" Value="Center"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="FontSize" Value="14"/>
</Style>
</Setter.Value>
</Setter>
<Setter Property="ColumnHeaderStyle">
<Setter.Value>
<Style TargetType="DataGridColumnHeader">
<Setter Property="Background" Value="#6959f2"/>
<Setter Property="Foreground" Value="White"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="HorizontalAlignment" Value="Center"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="FontSize" Value="14"/>
<Setter Property="Padding" Value="0,10,0,10"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#0984e3"/>
</Trigger>
</Style.Triggers>
</Style>
</Setter.Value>
</Setter>
</Style>
Сама таблица
<DataGrid x:Name="dataGrid" AutoGenerateColumns="False" SelectionUnit="CellOrRowHeader" IsReadOnly="True" Margin="112,410,113,0" HeadersVisibility="Column" VerticalAlignment="Top">
<DataGrid.Columns>
<DataGridTextColumn Header="Date" Binding="{Binding Date}" CanUserSort="False" Width="*" />
<DataGridTextColumn Header="Name" Binding="{Binding Login}" CanUserSort="False" Width="*" />
<DataGridTextColumn Header="Amount" Binding="{Binding Value}" CanUserSort="False" Width="*" />
</DataGrid.Columns>
</DataGrid>