Hi,
Are you totally new to LabVIEW? If you are, perhaps you should look into some fundamental examples shipped with LabVIEW using its Example Finder. You may also search online for some LabVIEW tutorials.
However, if you are not new to LabVIEW, you may use Table or Multicolumn Listbox.
For Table, writing/ reading data will be directly as 2D String Array. Of course, some String and or Array functions are necessary to further manipulate or process the read data.
For Multicolumn Listbox, data of 2D String Array is written or read from it through the use of Property Node i.e. ItemNames. Again, some String and or Array functions are necessary to further manipulate or process the read data.