Function ExternIDimport(filename: string): integer
This function creates a lookup table, which can be used for translating between external ID (numbers or strings) and internal rowID (1,2,3..).
Supply a text file with one external ID on each line and call the function. It will automatically detect if numbers or strings are used and create the index most efficiently according to this. Use a fully qualified filename including path.
The index is kept in a file called index.bin in the same directory as the other network files (as defined by property directory)
The length of the external ID can not exceed 100 characters.
See also ExternIDimport2
Possible error codes: -32 -40
ActiveX / VCL / CLX component: RWnetBase