If I have the following code to create a dataset:

            ' Create a dataset
            loDataSet.Tables.Add("Temp")
            loDataSet.Tables(0).Columns.Add("Name", GetType(System.String))
            loDataSet.Tables(0).Columns.Add("Length", GetType(System.Int32))
            loDataSet.Tables(0).Columns.Add("LastWriteTime", GetType(System.DateTime))

How can I update the first column line to create a character field of a specific length instead of a memo field?