c# - DataContext to DataGrid in user control -

i have main window tabcontrol. adding new tabitem user control content. in xaml:

    <grid><datagrid  datacontext="{binding path=patients, mode=twoway}">             <datagrid.columns>             <datagridtextcolumn header="id"                                 width="auto"                                 binding="{binding id}"/> 

in code behind: opening context,

 var query = pp in context.patients select pp;  var patients = query.tolist();          tabitem patientsview = new tabitem(); // adding new tabitem  stackpanel header = new stackpanel  header.children.add(new textblock {text="patients"});  patientsview.header = header;  patientsview.content = new viewdatapatients{datacontext = patients}; 

it refuses populate bind data grid. idea doing wrong?

can't understand why need such approach, still. you've set datacontext of usercontrol patiense, datagrid alreay have data context, enought following:

<datagrid datacontext="{binding}"> 

but redundant in case. populate datagrid data set itemssource:

<datagrid itemssource="{binding}"> 

hope helps.

king regards, nazar