What is shown in this sample:Adding columns
will add the Stock Level and Postal Code columns at the end
of DataGrid if they are not already present.Updating columns will update the
Weight column's data formatter and the Order
Time column's allowFilter and width properties, if these columns
exist.Removing columns will remove the Weight, Postal Code and
Stock
Level columns from the DataGrid, if they are present.Inserting columns
will insert the Weight, Postal Code, and Stock
Level columns before the last column, if they are not already present. If they are, they will be
ignored and will keep their original values and positions.