Question: Import file to Maple

Hi everybody,
I have a follow problem:
Maple offers generate graph (network) for example in this way:

where {{1,2},{1,3},{2,3}} is a list of edges.

In my study I need to generate a big graph (network), where list of edges is very long
(contains more than 100000 edges).
Can I import from my directory (for example C:\\Desktop\) file, contains edges.
Now I copy from txt file all list of edges and paste into Maple. This way is very unproffesional,
moreover Maple hangs sometimes then.
I tried ImportData() and Tools -> Assistants -> Import Data but I can't import file correctly.

Please advise me:)

In my dreams it looks like:


where list.dat looks like:


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