Is it possible to change the walltype name through API

[jeffreybo.liu]

 I would like to change the walltype name of a wall through API, but it seems it does not work right. It seems the members in WallType cannot be modified, even public ones.

foreach (Element collectedElem in collection) {
                   
                    if (collectedElem.GetType().Name == "Wall") {
                        Wall wall = (Wall)collectedElem;
                                             
                    string wallValue=collectedElem.Level.Name+";"+collectedElem.Name;
                        
                    TaskDialog.Show("Wallvalue", wallValue);
    
                    if (walltype.Contains(wallValue) == false)
                    {
                  
                        walltype.Add(wallValue);                      
                    }
                    else {
                       
                        wall.WallType.Name="NewName";

                        TaskDialog.Show("change value", wall.WallType.Name  );
                    }
                    }
           
                }
                
                TaskDialog.Show("Test", "End of searching document!");
            }

[jeffreybo.liu]

 I would like to change the walltype name of a wall through API, but it seems it does not work right. It seems the members in WallType cannot be modified, even public ones.

foreach (Element collectedElem in collection) {
                   
                    if (collectedElem.GetType().Name == "Wall") {
                        Wall wall = (Wall)collectedElem;
                                             
                    string wallValue=collectedElem.Level.Name+";"+collectedElem.Name;
                        
                    TaskDialog.Show("Wallvalue", wallValue);
    
                    if (walltype.Contains(wallValue) == false)
                    {
                  
                        walltype.Add(wallValue);                      
                    }
                    else {
                       
                        wall.WallType.Name="NewName";

                        TaskDialog.Show("change value", wall.WallType.Name  );
                    }
                    }
           
                }
                
                TaskDialog.Show("Test", "End of searching document!");
            }

[jeremytammik]

Dear jeffreybo.liu,

There is no reason why you cannot programmatically modify the name of a wall type.

However, your code below mixes together a number of different steps in one place.

I would suggest that you do one thing at a time, e.g. 

• Iterate over the collector and store the desired wall element.
• Close the iteration.
• Extract the wall type from the selected wall. 
• Open a transaction.
• Change the wall type name.
• Commit the transaction.

I hope this helps.

Best regards,

Jeremy

[jeffreybo.liu]

Thank you very much!:-)

I did not open a transaction before I made the change on the revit document. Revit threw it into an exception. I was too noooobie... Working harder~~

[jeremytammik]

I am glad it helped.

Please look at the getting started material before doing anything else:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#2

Especially, work through the My first plugin and DevTV tutorials.

That will give you the hang of things.

Cheers, 

Jeremy