title: Deleting the previously downloaded excel sheet and download new one
body: <p>I have an application which downloaded excel sheet on button click, the problem is the downloaded excel sheet tells how many times it was downloaded, like, if the sheet name is ExtractReport.xlsx, the after downloading I get ExtractReport(10).xlsx if i have downloaded it 10th time.</p>
  
  <p>Here is the code:</p>
  
  <pre><code>Response.ClearContent();
  Response.BinaryWrite(excelExtract.GenerateExtractExcel());
  Response.AppendHeader("content-disposition", "attachment; filename = Extract Report.xlsx");
  Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
  Response.Flush();
  Response.End();[excel sheet downloaded screen shot][1]
  </code></pre>