I have a requirement where,I need to display comma separated values from database into gridview.(Not from a CSV file)

I have a table with KeyID,KeyName & KeyVal as columns.KeyVal column is comma separated value.

In the grid,KeyName & KeyVal should be displayed where comma separated values in KeyVal should be always falling in new row meaning

KeyName KeyVal
Help H1
H2

The user should be given an option to insert, update & delete these comma separated values in grid.

I am not using the basic gridview insert/update/delete options,meaning I am using buttons to perform these operations.I need help to get hold of the cell values of the gridview in these buttons so that I can edit,delete based on cell values.

The full code in C# with the aspx design will be highly appreciated.