Hi Alex,

Thank you for contacting Infragistics!

The `IgxExcelExporterService` exports the array of objects that you've passed. To change the order, you can simply map the array with a transform function before passing it to the `exportData` method:

const arrangeData: (obj: { [key:string] : any}) => {[key: string]: any} = (obj) => {
//Return an object with the mapped keys in proper order
  return {
  name: obj.name,
  age: obj.age,
  uid: obj.uid
  }

You can change the date that will be populated in the cells by subscribing to the `onRowExport` event and changing the data that you want to write:

this.excelExportService.onRowExport.pipe(takeUntil(this.destroy$)).subscribe((args: IRowExportingEventArgs) => {
     
      args.rowData["account_balance"] = '$' + args.rowData["account_balance"].toFixed(2);
    })

In the above example, `rowData.account_balance` is changed from `number` to `string`, with an appended dollar sign to the beginning. 

As for the headers, you can subscribe to the `onColumnExport` event and change the header of the column that is being exported:

this.excelExportService.onColumnExport.pipe(takeUntil(this.destroy$)).subscribe((args: IColumnExportingEventArgs) => {
      if (args.field === "uid") {
        args.header = "Unique ID";
      }
    })

Here is a StackBlitz example - please have a look when you get the chance!

I hope this helps!

Also is there a place where most of these options a documented ? I went to https://ko.infragistics.com/products/ignite-ui-angular/angular/components/exporter_excel.html

but there is not to much info what’s avail as far as formatting of data etc goes. I see I can manipulate basic string stuff but it does not show how to apply an actual excel format like number or change cell background

The IgxExcelExporterService I've used in my examples is a lightweight solution for exporting data to Excel. It handles information as strings and exports it as such. You can manipulate the date that will be populated in the spreadsheet fields to a limited extent, e.g. transforming the value before writing to the document, as shown in my example above.

Using the IgxExcelExporterService is ideal if you want to export large amounts of string data to a .csv file, for example (as excel formatting is not applicable there).

If you want to achieve more complex formatting and functionality, you can use the Excel Library. Under the topic, you can find example on how to set up the library and how you can use it to format cells or use worksheets in your export.

Hope this helps!