asp.net gridview vs writing innerhtml

Dim tab As New Table
For Each row In DataTable.Rows
  Dim tabRow as New TableRow
  For Each col In row.Columns
    dim tabCol as New TableColumn
    tabCol .Text = row(col)
    tabRow.Controls.Add(tabCol )
  Next
  tab.Rows.Add(tabRow)
Next
Page.Controls.Add(tab)