Aspose.Tasks.Examples.CSharp.WorkingWithFormulas.UsingTasksAndResourceFieldsInFormulaCalculations.Run C# (CSharp) Method

        public static void Run()
        {
            try
            {
                // The path to the documents directory.
                string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.FullName);

                Project project = CreateTestProjectWithCustomField();
                Task task = project.RootTask.Children.GetById(1);

                // Set formula for extended attribute
                ExtendedAttributeDefinition extendedAttributeDefinition1 = project.ExtendedAttributes[0];
                extendedAttributeDefinition1.Alias = "Days from finish to deadline";
                extendedAttributeDefinition1.Formula = "[Deadline] - [Finish]";

                // Set Task Deadline and save project
                Task task1 = project.RootTask.Children.GetById(1);
                task.Set(Tsk.Deadline, new DateTime(2015, 3, 20, 17, 0, 0));
                project.Save(dataDir + "project_UsingTasksAndResourceFields_out.mpp", SaveFileFormat.MPP);             
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message + "\nThis example will only work if you apply a valid Aspose License. You can purchase full license or get 30 day temporary license from http://www.aspose.com/purchase/default.aspx.");
            }            
        }