Assign new name to root file using root properties

Question

Hello There, 
I ve, 
Current File name = Test1.tdms
which has Properties such as :
     1. Lab = 123
     2. Load = Heavy
     3. Machine = 5
     4.Method = Fast
     5.Run = 2
my required New File name = concatenate of specified root properties spaced with underscore followed by the extension.tdms
i.e 
New File name = concatenate [Data.Root.Properties("Lab"),Data.Root.Properties(​"Load"),Data.Root.Properties("Machine"),Data.Root.​Properties("Method"),Data.Root.Properties("Run")] each property seperated by "_"
New File name = 123_Heavy_5_Fast_2.tdms
I need to perform this for multiple tdms files.
I ve attached a sample file
Please guide me thru this scripting process
Attachments:
Test1.tdms ‏1 KB

Answer 1

Thanks Sam,
This is how I approached it, let me know if you have any better way to do it. (refer attachement Test1.tdms from previous post)
dim a,b,c,d,e, newname
a=Data.Root.Properties("Lab").Value
b=Data.Root.Properties("Load").Value
c=Data.Root.Properties("Machine").Value
d=Data.Root.Properties("Method").Value
e=Data.Root.Properties("Run").Value
newname=a+"_"+b+"_"+c+"_"+d+"_"+e
Call DataFileSave(newname,"TDMS")
Ques 1 : When I use 'DataFileRename' it provides this error ---- >  Operating system error :"-2"
Ques2 : I would like to keep certain length of my current file name and replace the rest with customized name
eg: current name = LR1634240_U4_Double_Loop_12_C_150331_154739.tdms
       newname = newname + _150331_154739.tdms
       The first part of the name is customized based on the above aproach
       The value of second part after '+' is unique to the file but the format of the second part is common for all other files.
How to perform this action.
Thanks
Arun