Issue with AsValueString()

[Anonymous]

Hello,

First of all, i'm working in meter.

As i could read on somes post, all data are store in feet in DB.

So my problème is that i have a value as '0.336 m³'

When i want to get it as : myparam.AsValueString(), i get '0.34 m³'

When i want to get it as myparam.AsDouble(), i get '11.84..' (the value as stored in database of revit)

The problem is that i don't find out to only get my value as shown : '0.336 m³'.

I read that i could use formatOptions, but i don't figure it out how to do..

I also read that use the method AsValueString() isn't advise, i cant' use builtinparameter for that.

Can you help me to get that ? 

Best regards,

[Anonymous]

I maybe found a solution.

I'm using FormatOptions like =

FormatOptions formatOtpions = new FormatOptions();

formatOption.UseDefault = false;

formatOptions.Accuracy = 0.0001

formatOption.DisplayUnits = myparam.DisplayUnitType

myparam.AsValueString(formatOption)

I'm gonna look if it works on all case and keep this update

UPDATE  :

If I use this, i have a lost of precision.

The result that i get is '0.3364'..

[jeremytammik]

I suggest not using AsValueString at all:

https://thebuildingcoder.typepad.com/blog/2019/04/batch-processing-and-aspects-of-asstringvalue.html...

Good luck!

Jeremy

[Anonymous]

Hi Jeremy,

As i said, i would like to avoid using the AsValuestring methode.

But when i'm using the AsDouble for example, it's give me the value of my parametre, but as saved in revit, not as shown.. 

So i'm getting the converting value, but I have a leak of accuracy..

[jeremytammik]

AsDouble is always at least as precise as AsValueString, and almost always more precise.

AsValueString generates an inaccuracy controlled by Revit, not you.

Using AsDouble, you have more accuracy and total control.