xml row id

When I use a row id composed of three large dotted numbers the data grid row selected attributed does not always clear causing multiple lines to appear selected. is there a way to use something other than a simple number as the row id?

Any text string can be  used as row ID , it not limited by numbers ( its just most common case used in samples )

I have fond the problem appears whenever the row id is a number iwth a decimal point

By default grid uses commas for separation data in lists, so while the decimal point is safe, the comma can cause problems.
If you need to use commas inside IDs - you can change the default separator char to something different

If you still have problems with ID, which contains decimal point - please provide any kind of sample where issue can be reconstructed.