Populate ComboBox with data from a column in 2D array

I have an Array that I have finally managed to create but now I want to use the information in it for my GUI

The data looks like as follows

[0]          Local Area Connection          MAC Address          IP Address 1          IP Address 2

[1]          Local Area Connection 2       MAC Address          IP Address 1          IP Address 2

[2]          Local Area Connection 3       MAC Address          IP Address 1          IP Address 2

I want to be able to take the Local Area Connection values from the column and populate a ComboBox with them

I cant seem to figure out how to do it as I keep just getting Array subscript errors

Any help appreciated