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setColumnHidden is not working


I am using bellow Code. my data is coming from Databae to JS Array and then to Grid. I want to hide the ID Column. More over i have got a save button when i click that so it gets all the fresh data from grid and sends it to server so if ID is hidden while getting it should still work.

or while clicking at it i should get the ID of it.

Could please please help me in this regard.

Thanks in advance for your support and co-operation.


function doInitGrid(){


mygrid = new dhtmlXGridObject('mygrid_container');

mygrid.setImagePath("codebase/imgs/");

mygrid.setHeader("ID,Name,Father Name,Province,Phone,DOB");
mygrid.attachHeader(",#text_filter,#text_filter,#select_filter,#numeric_filter,#numeric_filter");
mygrid.setInitWidths("50,150,150,100,100,100");
mygrid.setColAlign("left,left,left,left,right,right");
mygrid.setColTypes("ro,ed,txt,ro,ed,dhxCalendar");
mygrid.setSkin("light");

mygrid.setColSorting("int,str,str,str,int,date");
//mygrid.setDateFormat("%m/%d/%Y");
//mygrid.enableHeaderMenu();
mygrid.attachEvent("onRowDblClicked",doOnRowDblClicked);



mygrid.init();
mygrid.setColumnHidden(1);
//var ar = [[11,12,13],[21,22,23],[31,32,33]]

//arrMain='['+ arrMain + ']';
mygrid.parse(arrMain,"jsarray");
//mygrid.loadXML("step3.xml");
fillddlProvinceEdit();
hideDiv('dvProvince');

}

 

I tried

mygrid.setColumnHidden(0,true);

 

It does not hide the column, and also the Javascrip array data is also not shown now. i dont know whats the link of this line with data.