This blog describes how to delete a rows one by one of gridview using command.

<Window x:Class="HorseRace.Forms.DeleteRow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 Title="DeleteRow" Height="300" Width="786" Loaded="Window_Loaded">
<Grid>
<DataGrid AutoGenerateColumns="False" Height="160" HorizontalAlignment="Left" Margin="20,47,0,0" Name="dataGrid1"
VerticalAlignment="Top" Width="238"
 <DataGrid.Columns>
<DataGridTextColumn Header="Sports" Binding="{Binding Name}"/>
<DataGridTextColumn Header="Sports ID" Binding="{Binding ID}"/>
<DataGridTextColumn Header="Acitve" Binding="{Binding Active}"/>
<DataGridTemplateColumn Header="Action">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate >
<Button Name="btnDelete" Content="Delete" Command="Delete" ></Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>