updateFromXML

refreshes grid from XML (doesn't work for buffering, tree grid or rows in smart rendering mode)

url	string	url of the file
insert_new	boolean	insert new items (optional, true by default)
del_missed	boolean	delete missed rows (optional, false by default)
afterCall	function	the function that will be executed after refresh is completted

Example

//update grid from xml
mygrid.updateFromXML("grid_updated.xml");
//update grid from xml, insert new items, delete missed rows, 
//execute the doAfterUpdate() function after rows have been updated
mygrid.updateFromXML("grid_updated.xml",true,true,doAfterUpdate);

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