How to edit a parsed string? DataGrid?

I have a table that stored a question and response to a question.  They are both strings that I would like to build into some type of table for displaying and editing.   The columns and rows are both dynamic.  I'm using C#/Asp 1.1.

The data looks like
header = Name^Address^Phone
response (2 rows) = Jessica^123 Main^555-1212$$Pete^456 Center^666-1212

I can parse out the data without problem.  That isn't the issue.  I need to know the best method to display to information for the user to be able to edit it also.  The number of columns is dynamic as well as the row.  I know I will have to reparse to save as a string.  We is the best method to present this information to the user.  I was trying to use a datagrid but I don't know the number of columns beforehand and they really aren't going to be editing a "row".

Thanks in advance