clearAndLoad

clears the existing grid state and loads data from an external file ( xml, json, jsarray, csv )

url	string	url to an external file
call	function	after loading callback function, optional
type	string	type of data (xml,csv,json,jsarray), optional, XML by default

Example

//clear grid and load new data
myTreeGrid.clearAndLoad("grid_new.xml");
//clear grid, load new data, execute doAfterRefresh() function after grid was loaded
myTreeGrid.clearAndLoad("grid_new.xml",doAfterRefresh);
//clear grid, load new data in csv format, execute doAfterRefresh() function after grid was loaded
myTreeGrid.clearAndLoad("grid_new.csv",doAfterRefresh,csv);

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