Resize dataGrid column in wpf

See this one


<window>
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:ed="http://schemas.microsoft.com/expression/2010/drawing" xmlns:local="clr-namespace:WpfStepByStep1" mc:Ignorable="d"
x:Class="WpfStepByStep1.MainWindow"
x:Name="Window"
Title="reponsive" Height="600" Width="825" ResizeMode="CanResizeWithGrip" >


<window.datacontext>
<local:addressbookviewmodel x:name="ViewModel" xmlns:x="#unknown" xmlns:local="#unknown">




<grid x:name="LayoutRoot" xmlns:x="#unknown">
<textblock horizontalalignment="Left" margin="8,8,0,0" textwrapping="Wrap" text="Address Book" verticalalignment="Top">
<listbox x:name="___No_Name_" margin="8,62,0,65" horizontalalignment="Left" width="213" itemssource="{Binding Contacts}" selecteditem="{Binding SelectedContact}" displaymemberpath="Name"> <textblock horizontalalignment="Left" margin="237,62,0,0" textwrapping="Wrap" text="Address Book" verticalalignment="Top">
<textblock horizontalalignment="Left" margin="238,119,0,0" textwrapping="Wrap" text="Name" verticalalignment="Top">
<textbox horizontalalignment="Right" margin="0,116,44.446,0" textwrapping="Wrap" text="{Binding SelectedContact.Name}" verticalalignment="Top" width="226.553">
<textblock horizontalalignment="Left" margin="238,144.96,0,0" textwrapping="Wrap" text="E-Mail" verticalalignment="Top">
<textbox horizontalalignment="Right" margin="0,141.96,44.446,0" textwrapping="Wrap" text="{Binding SelectedContact.Email}" verticalalignment="Top" width="226.553">
<textblock horizontalalignment="Left" margin="238,170.92,0,0" textwrapping="Wrap" text="Phone" verticalalignment="Top">
<textbox horizontalalignment="Right" margin="0,167.92,44.446,0" textwrapping="Wrap" text="{Binding SelectedContact.PhoneNumber}" verticalalignment="Top" width="226.553">


<textbox height="23" horizontalalignment="Left" margin="532,207,0,0" name="textBox1" verticalalignment="Top" width="227">