one datagrid, numerous (xml) datasources

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i have prospective application following setup:

one datagrid, numerous buttons elsewhere in application

desired procedure:

upon clicking 1 of buttons -

the datagrid unloaded of datasource loaded (is necessary?);
the datagrid populated specific, different xml datasource (xml file) assigned specific button(while showing busycursor, , upon completion of data load, normal cursor returned).

any appreciated.

the easiest thing (imho) combine each of sources single datasource , provide filterfunction collection. when button pressed makes necessary change view switch out filterfunctions, set columns visible or not, , refresh collection.


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