How to convert a LTspice schematic file (.asc) to a .lib file?

Question

Hi, I have built a model using LTspice with schematic file (.asc), and I need to convert the .asc file to .lib file so that others could only see the netlist information instead of detailed circuits. 
 I have tried clicking the "VIEW"-->click "Spice Netlist" and copy the netlist to create a .lib file. Then, i use LTspice to import this .lib file and create a symbol (.asy). It turned out that the symbol file does not work, and i can't figure out. 
 Could anyone tell me the right way? many appreciate!

steve12 · Accepted Answer

i did it by copying the subcircuit 
 .subckt ... .ends 
 from the netlist to its own .sub modelfile and save it in a new folder

then i openend the hierarchical symbol, 
 which i defined for my subcircuit and which doesnt have any attributes defined

and edited the attributes 
 Prefix 
 Value 
 Modelfile 
 accordingly 
 
 save this .asy symbol file in the folder together with the .sub modelfile 
 
 then you can copy your .asc maincircuit file to this folder and it should work 
 
 here is the complete project 
 asc ... hierarchical subcircuit version 
 sub ... modelfile version 
 dreipunktregler.zip 
 
 hth steve)

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How to convert a LTspice schematic file (.asc) to a .lib file?