SharePoint 2010 动态创建calculate column

 static void Main(string[] args)

        {

            using (SPSite site = new SPSite("http://serverName/sites/Vijai/"))

            {

                using (SPWeb web = site.OpenWeb())

                {

                    SPList list = web.Lists.TryGetList("Custom");

                    if (list != null)

                    {

                        ////Create a calculated field                  

                        string calculatedColumn = list.Fields.Add("CalculatedColumn", SPFieldType.Calculated, false);

                        ////Get the newly created calculated field                     

                        SPFieldCalculated calculatedField = list.Fields[calculatedColumn] as SPFieldCalculated;

                        ////Set the calculated field formula                     

                        calculatedField.Formula = "=[Title]";

                        ////Set the data type returned from this formula               

                        calculatedField.OutputType = SPFieldType.Text;

                        ////Update the calculated field                     

                        calculatedField.Update();

                    }

                }

            }

        }