sql - DataGrid with small rows and no data after binding to the ItemSource with LINQ query -

i'm new linq , wpf , i'm trying bind custom query linq , rows barely appear although when debugging ienumerable<ordersummary> ordersummary has info in it. believe empty rows showing amount of rows returned query:

xaml:

<datagrid  name="dgrorders" margin="59,54,161,285" /> 

code behind:

orderitdataclassesdatacontext dc = new orderitdataclassesdatacontext(); ienumerable<ordersummary> ordersummary = dc.executequery<ordersummary>("select * [order]",1); dgrorders.itemssource = ordersummary;  public class ordersummary {     int orderid { get; set; }     datetime orderdate { get; set; }     int customerid { get; set; }  } 

i suppose should use properties instead of fields. check examples on msdn

public class ordersummary {     public int orderid { get; set; }     public datetime orderdate { get; set; }     public int customerid { get; set; } } 

the second thing may try - specify dgrorders datacontext, not itemsource.