DataTable.Clear Method ()
Clears the DataTable of all data.
Assembly: System.Data (in System.Data.dll)
All rows in all tables are removed. An exception is generated if the table has any enforced child relations that would cause child rows to be orphaned.
If the DataSet is bound to an XmlDataDocument, calling DataSet.Clear or raises the NotSupportedException. To avoid this situation, traverse each table, removing each row one at a time. When you use NewRow to create new rows, the rows must be processed before you call .
Available since 1.1