Insert not happening in SQL through ADO.net

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SQL

ADO.NET

Silverlight

I am working on an application where i am populating controls from the database table, for this i have written linq query to fetch the data.

The data can be fetched from the databse but when i try to insert values in the table it just doesn;t do anything. The values are not getting stored in the table and there is no error or exception generated while doing the same.

I am using this piece of code to insert the value.

Tasks tsk = new Tasks
                {
                    game_id = 1,
                    platform_id = 1,
                    version_id = 1,
                    description = "abcd",
                    activity_name = "abcd",
                    projected_start_date = Convert.ToDateTime("01/13/2010"),
                    projected_end_date = Convert.ToDateTime("01/14/2010"),
                    duration = 1,
                    parent_task_id = 1
                };
svcContext.MergeOption = MergeOption.AppendOnly;
svcContext.AddObject("Tasks", tsk);
svcContext.UpdateObject(tsk);

i have tried using BeginSavechanges :doh: as well as endSave changes but that also didnt work.

I am stuck with this and any help of this will be greatly appreciated. :)