title: Updating the excelsheet using EPPlus in c#
body: <p>I have a excel file which contains sheet named <code>Data</code>. This sheet already contains few data. I need to open this file and add more data in it. I have tried searching about this but everyone is just creating new sheets in their workbook. I need to update the current sheet. Below is my code:</p>
  
  <pre><code>MemoryStream ms = new MemoryStream();
  using (FileStream fs = File.OpenRead(@"Path\File.xlsx")
  using (ExcelPackage excelPackage = new ExcelPackage(fs))
  {
    ExcelWorkbook excelWorkBook = excelPackage.Workbook;
    ExcelWorksheet excelWorksheet = excelWorkBook.Worksheets.First();
    excelWorksheet.Cells[1, 1].Value = "Test";
    excelWorksheet.Cells[3, 2].Value = "Test2";
    excelWorksheet.Cells[3, 3].Value = "Test3";
  
    excelPackage.SaveAs(ms); 
  } 
  </code></pre>
  
  <p>but it didnt update the sheet. I do not what I am doing wrong. Can anyone help me please. Thanks</p>