dg.columns[0].headerText = 'aaa';

var tempCols:Array = dg.columns;

tempCols[0].headerText = 'aaa';

dg.columns = tempCols;

var tempCols:Array = dataGrid.columns;

dg.columns = tempCols;

dg = new DataGrid();

 

var ac:ArrayCollection = new ArrayCollection();

var n:int = dataGrid.dataProvider.length;

for (var i:int = 0; i < n; i++)

{

        ac.addItem(ObjectUtil.copy(Object(dataGrid.dataProvider)[i]));

}

dg.dataProvider = ac;

 

var arr1:Array = new Array();

var m:int = dataGrid.columns.length;

for (var j:int = 0; j < m; j++)

{

        arr1.push(new DataGridColumn(dataGrid.columns[j].dataField));

}

dg.columns = arr1;

registerClassAlias ("copiedColumn", DataGridColumn);

var tempCols:Array = [];

for each(var col:DataGridColumn in dataGrid.columns)

{

        var buffer:ByteArray = new ByteArray();

        buffer.writeObject(col);

        buffer.position = 0;

 

        tempCols.push(buffer.readObject() as DataGridColumn);

}

 

dg.columns = tempCols;