快手上经常用的歌曲:asp.net问题

myTable它是一个表名Dim myTable As DataTable = DS.Tables("user")
pageno是用户选择的第几页.
PageSize.SelectedItem.Value是每页显示的条数.
Dim newRow As DataRow = tempTable.NewRow()
For J = 0 To myTable.Columns.Count -1
newRow(myTable.Columns(J).ColumnName) = myTable.Rows(I).Item(J)
Next
tempTable.Rows.Add(newRow)
上边一段我就不知道了.只知道是clone好像是制复一个相同的表名为tempTable.请高手说说.详细点.

Dim tempTable As DataTable = myTable.Clone()

Dim I, J As Integer
For I = (PageNo -1) * PageSize.SelectedItem.Value To PageNo * PageSize.SelectedItem.Value - 1
If I > myTable.Rows.Count -1 Then Exit For
Dim newRow As DataRow = tempTable.NewRow()
For J = 0 To myTable.Columns.Count -1
newRow(myTable.Columns(J).ColumnName) = myTable.Rows(I).Item(J)
Next
tempTable.Rows.Add(newRow)
Next
myGuestbook.DataSource = tempTable
myGuestbook.DataBind()
End Sub