Hi Neil,
Thanks for posting your query to us.
1) Edit mode does not function properly?
I am afraid that I am not able to reproduce the issue of improper functioning of edit button. Please check with the code below for setting the edit to work:
this.GridGroupingControl1.TableDescriptor.AllowEdit = true;
Also I have created a sample to test this issue. Please refer the link below:
http://websamples.syncfusion.com/samples/Grid.Web/6.2.0.40/trialeditingmode/main.htm
2) To bind LINQ query with the grid?
It is possible to bind the grid to the query result by creating a new LINQ to the SQL model and adding it to the application that enables to model classes which maps to the database. Please refer the link below for detailed information:
http://64.78.15.37:89/technologies/database/linq/default.aspxPlease let me know if you have any questions.
Regards,
Janagan.