c# - How to bind innergrid in datagrid? -

basically new databinding here tried insert inner grid in each row displaying marks. can 1 me how achieve one.

xaml code:

   <grid>     <datagrid x:name="datagrid" autogeneratecolumns="true" rowdetailsvisibilitymode="visiblewhenselected">           <datagrid.rowdetailstemplate>             <datatemplate>                 <datagrid itemssource="{binding marks}" autogeneratecolumns="true"/>             </datatemplate>         </datagrid.rowdetailstemplate>      </datagrid>   </grid> 

below code contains 2 classes 1 students , marks

code:

public partial class mainwindow : window {     public mainwindow()     {         initializecomponent();          datagrid.itemssource = getstudentsinfo();     }      private list<student> getstudentsinfo()     {         list<student> stdcoll = new list<student>();          stdcoll.add(new student() { id = 1, name = "aaa", marks = new marks() { sub1 = 75, sub2 = 80, sub3 = 90 } });         stdcoll.add(new student() { id = 2, name = "bbb", marks = new marks() { sub1 = 45, sub2 = 50, sub3 = 70 } });         stdcoll.add(new student() { id = 3, name = "ccc", marks = new marks() { sub1 = 35, sub2 = 80, sub3 = 60 } });         stdcoll.add(new student() { id = 4, name = "ddd", marks = new marks() { sub1 = 75, sub2 = 40, sub3 = 90 } });          return stdcoll;     } } public class student {     public int id { get; set; }     public string name { get; set; }     public marks marks { get; set; } }  public class marks {     public int sub1 { get; set; }     public int sub2 { get; set; }     public int sub3 { get; set; } } 

your inner datagrid has bind list outer one.

make changes mark class

public class mark {      public int sub { get; set; }    } 

change mark property list

public marks marks { get; set; } 

to

public list<mark> marks { get; set; } 

when add student, give them new list instead of mark

stdcoll.add(new student() { id = 4, name = "ddd", marks = new list<mark>() { new mark(){ sub = 90; } } }); 

then minor name change binding

itemssource="{binding marks}" 

so binding looks property marks inside class student

as recommendation, mvvm pattern , how use it.