Sequential workflow example

Sequential workflow

http://www.codeproject.com/Articles/416393/Create-a-Workflow-using-Visual-Studio-2010

ex code:

private void codeActivity1_ExecuteCode(object sender, EventArgs e)

        {

            SPSite site = SPContext.Current.Site;

            SPWeb web = site.OpenWeb();

            SPList list = web.Lists["Sequentialwfex"];

            foreach (SPListItem item in list.Items)

            {

                if (item["Saddress"] == null)

                {

                    item["Saddress"] = "Please enter correct address value";

                    item.Update();

                    web.AllowUnsafeUpdates = true;

                }

            }

        }