If you cannot change the data type to decimal (which would be the preferred solution), you can fetch the string data from a row and then use
Decimal.TryParse Method[
^].
Now you would have an actual number in your hand and then format it as you like for example using
Decimal.ToString Method (String)[
^].
Noet: Watch out the decimal separator. If the data is from different culture, you may have to replace the decimal separator used in the data with current cultures decimal separator