Deleting in XML

Hi again... i am having problems getting my code to delete certain parts on an XML.

I've tried..

Code:

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DirectCast(ListBox2.SelectedItem, Data.DataRowView).Item("name").Delete()
            DirectCast(ListBox2.SelectedItem, Data.DataRowView).Item("description").Delete()
            DirectCast(ListBox2.SelectedItem, Data.DataRowView).Item("manufacturer").Delete()
            DirectCast(ListBox2.SelectedItem, Data.DataRowView).Item("year").Delete()
            DirectCast(ListBox2.SelectedItem, Data.DataRowView).Item("type").Delete()

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But get

Quote:

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Public member 'Delete' on type 'String' not found

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I have also tried

Code:

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ds1.Tables.Remove(ListBox2.SelectedItem)

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and

Code:

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ds1.Tables.Remove(ListBox2.SelectedItem.ToString)

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but they don't work either..