sql server compact edition Data editor
sql-server-ce
Solution
As you mentioned in your comment, you can edit the table data via the Server Explorer in Visual Studio.
Just add a new connection to the .sdf file, expand the Tables view, right-click on the table you want to edit, and select "Show Table Data".
This will bring up a grid view you can edit.
Problem
Is there any gui/tool which allows you to edit the data in the ssce db file ?? like the sql server management studio which allows you to the select a table in sql express+ and edit-add/update/delete the data in that table using a grid interface !