Clearing column in a DataSet - is this a hack?

I have a dataset that I'm working with that will sit in memory for as long as the user has the program running. Let's say there's a column in this dataset whose values will change as the user works, and at some point the user decides to restart everything. The way I am currently resetting the particular column in the dataset is:

dsDataSet.Tables("TableName").Columns.Remove("ColumnName")

...and then re-adding the column (default values are OK for my purposes). Is this the "right" way to clear a table column in a dataset or is there a better/more accepted way? While there's a .Clear method for tables, there isn't one for columns.

Hmm, maybe this is "cleaner":

Code:

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        Dim objSelectedRows() As DataRow
        objSelectedRows = dsDataSet.Tables("TableName").Select("Value <> 0")
        For Each objRow In objSelectedRows
            objRow("Value") = 0
        Next

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