Server side export in Angular DocumentEditor component

  //API controller for the conversion.
  [HttpPost]
  public void ExportSFDT([FromBody]SaveParameter data)
  {
    //Export the document in specified format.
    Stream document = WordDocument.Save(data.content, FormatType.Docx);
    FileStream file = new FileStream("sample.docx", FileMode.OpenOrCreate, FileAccess.ReadWrite);
    document.CopyTo(file);
    file.Close();
    document.Close();
  }

  public class SaveParameter
  {
  public string content { get; set; }
  }

import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import {
DocumentEditorComponent, EditorService, SelectionService, SfdtExportService, TextExportService, WordExportService
} from '@syncfusion/ej2-angular-documenteditor';

@Component({
  selector: 'app-container',
  template: `<div><button ejs-button (click)="saveAsSfdt()" >Export SFDT</button>
  <ejs-documenteditor #document_editor  id="container" height="330px" style="display:block" [isReadOnly]=false [enableEditor]=true [enableWordExport]=true [enableSfdtExport]=true> </ejs-documenteditor></div>`,
  encapsulation: ViewEncapsulation.None,
  providers: [EditorService, SelectionService, SfdtExportService, TextExportService]
})

export class AppComponent {
@ViewChild('document_editor')
public documentEditor: DocumentEditorComponent;

public saveAsSfdt(): void {
    let http: XMLHttpRequest = new XMLHttpRequest();
    http.open('POST', 'http://localhost:5000/api/documenteditor/ExportSFDT');
    http.setRequestHeader('Content-Type', 'application/json;charset=UTF-8');
    http.responseType = 'json';
    //Serialize the document content as sfdt.
    let sfdt: any = { content: this.documentEditor.serialize() };
    http.send(JSON.stringify(sfdt));
};
}