I'd like to prompt the user to download a file, generate it once they accept, and delete the file once they have made the transfer (if they accept the download.)
Does anyone know the c sharp or html code to achieve something like this?
Thanks.
You can use a file handler ashx for that eg, download.ashx and here is a fast example what you can have inside...
public void ProcessRequest(HttpContext context)
{
// example for the csv
context.Response.ContentType = "text/html";
// what is the file name that the user see to save
context.Response.AppendHeader("Content-disposition", "attachment; filename=" + cFileNameToShowAndDownload);
context.Response.Write("here is your text to send");
context.Response.Flush();
}
When the user accepts the download (ie. click on a button):
Generate CSV file and save it to temporary folder (use File class utility methods to get a temporary path)
Use
Response.ContentType = "text/csv"; Response.AppendHeader("Content-disposition", "attachment; filename=file.csv");
Call Response.WriteFile
passing the file path as argument, as generated before, then Response.Flush()
to make sure all the file was sent
finally
, delete the file
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