Delete a SharePoint ListItem using silverLight Client Object Model

Write this in button click event.

private string siteUrl = "http://Spserver:100/";

try

            {

                ClientContext clientContext = new ClientContext(siteUrl);

                List oList = clientContext.Web.Lists.GetByTitle("New Ideas");

                ListItem oListItem = oList.GetItemById(4);

                oListItem.DeleteObject();

                clientContext.ExecuteQueryAsync(onQuerySucceeded, onQueryFailed);

            }

            catch (Exception Ex)

            {

                lblErrorMessage.Content = Ex.ToString();

            }

private void onQuerySucceeded(object sender, ClientRequestSucceededEventArgs args)

        {

            UpdateUIMethod updateUI = DisplayInfo;

            this.Dispatcher.BeginInvoke(updateUI);

        }

        private void DisplayInfo()

        {

            //MyOutput.Text = "New item created in " + oList.Title;

            lblErrorMessage.Content = "Item Deleted";

        }

        private delegate void UpdateUIMethod();

        private void onQueryFailed(object sender, ClientRequestFailedEventArgs args)

        {

            MessageBox.Show("Request failed. " + args.Message + "\n" + args.StackTrace);

        }