How does "Binding" knows which object I want (Xaml, DataGridTextColumn) -

sorry unclear question: didn't know how write wanted ask, code helps me clear it:

vehiclewidget.xaml

<local:parkingwidget x:class="vehicleswidget"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:local="clr-namespace:widgets" loaded="parkingwidget_loaded" mc:ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" height="65" width="420"> <grid height="61" width="411">     <grid.columndefinitions>         <columndefinition width="5"/>    <!--0-->         <columndefinition width="auto"/> <!--1-->         <columndefinition width="auto"/> <!--2-->         <columndefinition width="298"/>         <columndefinition width="0*" />         <columndefinition width="38*" />         <!--3-->     </grid.columndefinitions>     <grid.rowdefinitions>         <rowdefinition height="5"/>   <!--0-->         <rowdefinition height="auto"/> <!--1-->         <rowdefinition height="5"/>    <!--2-->         <rowdefinition height="auto"/> <!--3-->         <rowdefinition height="5"/>   <!--4-->                </grid.rowdefinitions>      <label         content="vehicles"         grid.column="1" grid.row="1"/>      <button         name="btnrefresh"         grid.column="2" grid.row="1"         content="refresh"         width="98"         horizontalalignment="right"         click="btnrefresh_click" grid.columnspan="2" margin="0,2,257,2">     </button>      <datagrid         name="vehiclesdatagrid"         autogeneratecolumns="false"         isreadonly="true"         grid.column="1" grid.row="3" grid.columnspan="3" fontfamily="arial" margin="0,0,3,0">          <datagrid.columns>             <datagridtextcolumn header="time" x:name="timecolumn" binding="{binding path=time}" />             <datagridtextcolumn header="ticketid" x:name="tickedidcolumn" binding="{binding path=ticketid}" />             <datagridtextcolumn header="lpn" x:name="lpncolumn" binding="{binding path=lpn}" visibility="hidden" />             <datagridhyperlinkcolumn header="picture" x:name="picturecolumn" binding="{binding path=ticketid}" visibility="hidden">                 <datagridhyperlinkcolumn.elementstyle>                     <style>                         <eventsetter event="hyperlink.click" handler="hyperlink_click"/>                     </style>                 </datagridhyperlinkcolumn.elementstyle>             </datagridhyperlinkcolumn>             <datagridtextcolumn header="class" x:name="classcolumn" binding="{binding path=heightclassification}" />             <datagridtextcolumn header="weight" x:name="weightcolumn" binding="{binding path=weight}" />             <datagridtextcolumn header="orientation" x:name="orientationcolumn" binding="{binding path=orientation.degrees}" />             <datagridtextcolumn header="piston1" x:name="piston1column" binding="{binding path=piston1}" />             <datagridtextcolumn header="piston2" x:name="piston2column" binding="{binding path=piston2}" />             <datagridtextcolumn header="location" x:name="locationcolumn" binding="{binding path=location}" />         </datagrid.columns>     </datagrid> </grid> 

in "vehiclewidget.xaml.cs" have "list vehicles", , in "vehicle" class have properties of: piston1, piston2, size, lpn , of course weight

the follows line, add column grid , names "weight" , bind weight.

<datagridtextcolumn header="weight" x:name="weightcolumn" binding="{binding path=weight}" /> 

how binding knows choose object, takes it's properties?

i ask question because want bind property of different object (not vehicle, in example, newvehicle, inherited vehicle).

bindings in xaml "link" between variable or object , xaml widget textview, gridviews etc. there lot of ways use it. give few examples:

-1- property sourcecode binded textblock. when variable changes value, textblock becomes updated:

 <textblock text="{binding someproperty}"/>  

-2- more complicated example, textbox's value becomes updated if variable changes , variable becomes updated when value of textbox changed:

 <textblock text="{binding somevar, mode=twoway}"/>  

-3- databinding converter, means can write converter in c# processes binded value , returns custom value/object:

xaml

 <textblock text="trafficlight" background="{binding trafficlightstate, converter={staticressource trafficlightstatetocolorconverter}}"> 

c#

 public class trafficlightstatetocolorconverter : ivalueconverter  {     public object convert(object value, type targettype, object parameter, system.globalization.cultureinfo culture) {         if(value.equals("green"))             return color.fromknowncolor(knowncolor.green)         else if(value.equals("yellow"))             return color.fromknowncolor(knowncolor.yellow)         else            return color.fromknowncolor(knowncolor.red)     }  } 

does answer questions, how xaml knows object has used?