IMinutesFieldManager Interface

try
 {
     Qdv.UserApi.Fields.IMinutesFieldManager fieldMan = es.GetMinutesFieldManager();
     Qdv.UserApi.Fields.IMinutesField field;
    
     // Cleanup first, if there are some fields from previous tests.
     fieldMan.DeleteField("AAA");
     fieldMan.DeleteField("_AAA");
     fieldMan.DeleteField("BBB");
     fieldMan.DeleteField("CCC");
     fieldMan.DeleteSetOfFields("MAT", SetOfFieldType.Material);
     fieldMan.DeleteSetOfFields("WF", SetOfFieldType.Workforce);
     fieldMan.DeleteSetOfFields("TF", SetOfFieldType.TimeFrame);
     fieldMan.DeleteField("DESCRIPTION_NL_BE");
     fieldMan.DeleteField("UNIT_NL_BE");
     fieldMan.DeleteField("HAS_REFERENCE_IN_BOQ");
     fieldMan.DeleteField("IMPORTED_REFERENCE");
     fieldMan.DeleteField("THROUGHPUT_PACE");
     fieldMan.DeleteField("QUANTITY_FACTOR");
     fieldMan.ApplyChanges();
     // End of cleanup.
    
     // Create or modify field "AAA".
     if (!fieldMan.FieldExists("AAA"))
     {
         field = fieldMan.AddField("AAA", "aaa");
         field.Comment = "aaa comment";
     }
     else
     {
         field = fieldMan.GetField("AAA");
         field.Formula = "=IF([WPU] <> 0 , 2, 0)";
     }
     fieldMan.ApplyChanges();
    
     // Create field "BBB" if not created yet and simulate an exception.
     if (!fieldMan.FieldExists("BBB"))
     {
         field = fieldMan.AddField("BBB", "");
         try
         {
             // This should throw an exception due to the empty field name.
             fieldMan.ApplyChanges();
         }
         catch (Exception exx)
         {
             MessageBox.Show(exx.ToString(), "Example of an exception. We will continue sccessfuly.");
             // Set the field name to fix the problem.
             field.FieldName = "bbb";
         }
         // The name is OK, no exception should occur now.
         fieldMan.ApplyChanges();
     }
    
     // Create and delete field "CCC".
     field = fieldMan.AddField("CCC", "ccc");
     fieldMan.ApplyChanges();
     fieldMan.DeleteField("CCC");
     fieldMan.ApplyChanges();
    
     // Create the field "CCC" again. It will be used as a replacement field for native "Quantity" field.
     field = fieldMan.AddField("CCC", "ccc");
     fieldMan.ApplyChanges(); // this is needed if you want to make CCC a replacement field in the next step
    
     // Set CCC as a replacement field for native "Quantity" field.
     field = fieldMan.GetField("Quantity");
     field.Formula = "=1";    //must be a non empty string in order to set ReplacementField
     field.ReplacementField = "CCC";
     fieldMan.ApplyChanges();
    
     // Add sets of fields.
     string sofProblem = "";
     if (!fieldMan.AddSetOfFields("MAT", "mat", SetOfFieldType.Material))
     {
         sofProblem += "MAT ";
     }
     if (!fieldMan.AddSetOfFields("WF", "wf", SetOfFieldType.Workforce))
     {
         sofProblem += "WF ";
     }
     if (!fieldMan.AddSetOfFields("TF", "tf", SetOfFieldType.TimeFrame))
     {
         sofProblem += "TF ";
     }
     if (sofProblem != "")
     {
         MessageBox.Show("A problem creating the following sets of fields: " + sofProblem);
     }
     fieldMan.ApplyChanges();
    
     // Modify some fields in previously created "MAT" set of fields.
     fieldMan = es.GetMinutesFieldManager("MAT");
     field = fieldMan.GetField("MAT_TotalCost");
     field.ParentName = "custom_parent";
     //field.Formula = "aaa"; // not allowed here
     fieldMan.ApplyChanges();
    
     // Create some special fields.
     fieldMan = es.GetMinutesFieldManager();
     field = fieldMan.AddSpecialField(SpecialFieldKind.DescriptionLanguage, "NL-BE", "");
     field = fieldMan.AddSpecialField(SpecialFieldKind.UnitLanguage, "NL-BE", "");
     field = fieldMan.AddSpecialField(SpecialFieldKind.HasReferenceInBoQ);
     field = fieldMan.AddSpecialField(SpecialFieldKind.ImportedReference);
     field = fieldMan.AddSpecialField(SpecialFieldKind.ThroughputPace);
     field = fieldMan.AddSpecialField(SpecialFieldKind.QuantityFactor);    
     fieldMan.ApplyChanges();
    
     // Make the new fields AAA and BBB visible in some views.
     var fields = new List<String>();
     fields.Add("AAA");
     fields.Add("BBB");
     //   Make them visible at the end in Minutes.
     fieldMan.MakeFieldsVisible(fields, EstimateColumnsView.Minutes, FieldUserScope.AllUsers);
     //   Make them visible before Family column in Nomenclatures.
     fieldMan.MakeFieldsVisible(fields, EstimateColumnsView.Nomenclatures, FieldUserScope.AdminAndThisUser,
         FieldPlacementPosition.BeforeGivenField, "Family");
     //fieldMan.MakeFieldsInvisible(fields, EstimateColumnsView.Minutes, FieldUserScope.AllUsers);
     // Repaint the view to see the changes immediately.
     es.RepaintCurrentView();
 }
 catch (Exception ex)
 {
     MessageBox.Show(ex.ToString());
 }