As said in the comments, you can use Telerik Grid. However, if you want to build the table yourself the Grid control will suffice.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="50"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50"/>
<ColumnDefinition Width="50"/>
<ColumnDefinition Width="50"/>
</Grid.ColumnDefinitions>
</Grid>
The above will create a grid with 3 rows and 3 columns. If you want to autosize the columns:
<ColumnDefinition Width="*"/>
<RowDefinition Width="Auto"/>
This will create, respectively, a column that sizes itself based on the amount of available space and a row that sizes itself to its content.
To make your grid look like a table (ie. borders between each cell), use the border control:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
...
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50"/>
...
</Grid.ColumnDefinitions>
<Border Grid.Row="2" Grid.Column="1" BorderBrush="Black" BorderThickness="2">
//Content here
</Border>
</Grid>
You can place the Border control in each 'cell' by adjusting the Grid.Row and Grid.Column properties.