Word-wrapping text columns in DataGrid

 
Just word-wrapping DataGridTextColumns in DataGrid sounds straightforward, but you have to use a few tricks…

<DataGrid ItemsSource="{Binding Source={StaticResource DataProvider}, XPath=transunit}" AutoGenerateColumns="False">
    <DataGrid.Columns>
        <DataGridTextColumn Width="Auto" Binding="{Binding XPath=@id}" Header="ID"/>
        <DataGridTextColumn Width="*" Binding="{Binding XPath=source}" Header="Source">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="TextWrapping" Value="Wrap"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>
        <DataGridTextColumn Width="*" Binding="{Binding XPath=target}" Header="Target">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="TextWrapping" Value="Wrap"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>
    </DataGrid.Columns>
</DataGrid>

Add DataGridTextColumn.ElementStyle to the columns to be word-wrapped. Each Style and Setter child element needs to be configured as TargetType="TextBlock", Property="TextWrapping", and Value="Wrap". You also have to specify Width="*" or an explicit value in DataGridTextColumn so that the horizontal scrollbar will be disabled in DataGrid.

Link to source code: WordWrapTextColumnDemo