AutoCAD .NET :: Reading Objects Location (X / Y)

i want to write a command in C# that allow user to do 2 things:

1. choose a layer to work on
2. make a list/table of all objects in that layer, and their X Y coordinates.

for example - if a DWG file contain few layers, one of them has names (and only names). there are ~1500 objacts (text type) in that layer. every objact have a string (100,101,...,1350,1351...) and locating (X and Y). I want to be able to pick this layer, then bild a text file like this: (name X Y)

100 20456 40789
101 20344 40348
102 21034 40456

its dont has to be sorted. how do I do it? any lift to progress?