How to get data change when edit on Spreadsheet and save to file?

I opened file exel from URL and edited. I want to save data change to file. Can you support me to slove this.

<button class="e-btn" onclick="saveToServer()">Save Back to Server</button>  <ejs-spreadsheet id="spreadsheet" openUrl="Home/Open" saveUrl="Home/Save" created="onCreated"></ejs-spreadsheet>    <script>      function onCreated() {          var spreadsheetObj = ej.base.getComponent(document.getElementById('spreadsheet'), 'spreadsheet');          var request = new XMLHttpRequest();          request.responseType = "blob";          request.onload = () => {              var file = new File([request.response], "Sample1.xlsx");              spreadsheetObj.open({ file: file });          }          request.open("GET", "/Files/" + "Sample1.xlsx");          request.send();      }        function saveToServer() {          var spreadsheetObj = ej.base.getComponent(document.getElementById('spreadsheet'), 'spreadsheet');          spreadsheetObj.save();      }  </script>

public string Save(SaveSettings saveSettings)          {              ExcelEngine excelEngine = new ExcelEngine();              IApplication application = excelEngine.Excel;              try              {                  // Convert Spreadsheet data as Stream                  Stream fileStream = Workbook.Save<Stream>(saveSettings);                  IWorkbook workbook = application.Workbooks.Open(fileStream);                  var filePath = Startup._env.ContentRootPath.ToString() +  "/Files/Sample1.xlsx";                  FileStream outputStream = new FileStream(filePath, FileMode.Create);                  workbook.SaveAs(outputStream);                  return "Spreadsheet saved in server";              }              catch (Exception ex)              {                  return "Failure";              }          }

Thank you so much for your reply.
I ran project example in your link, when i clicked on button "Save Back to Server", the button did not working. Press F12, in Console tab, i got error with message :"Uncaught Uncaught SyntaxError: Unexpected token 'function'" in file constants.js:93.
Please, support me to slove this plobrem. Thank you.

<script src="https://cdn.syncfusion.com/ej2/17.3.16/dist/ej2.min.js"></script>

Thank you  very much. I soved this problem.