C# - Download File From Server And Then Delete

i am downloading a file from a server and i plan to delete the file that i have downloaded on the server after it gets downloaded on the client side. My download code is working fine but i dont know when to put the command to delete the file.

string filepath = restoredFilename.ToString();
// Create New instance of FileInfo class to get the properties of the file being downloaded
FileInfo myfile = new FileInfo(filepath);
// Checking if file exists
if (myfile.Exists)
{
// Clear the content of the response
Response.ClearContent();
// Add the file name and attachment, which will force the open/cancel/save dialog box to show, to the header
Response.AddHeader("Content-Disposition", "attachment; filename=" + myfile.Name);
//Response.AddHeader("Content-Disposition", "inline; filename=" + myfile.Name);
// Add the file size into the response header
Response.AddHeader("Content-Length", myfile.Length.ToString());
// Set the ContentType
Response.ContentType = ReturnExtension(myfile.Extension.ToLower());
//// Write the file into the response (TransmitFile is for ASP.NET 2.0. In ASP.NET 1.1 you have to use WriteFile instead)
Response.TransmitFile(myfile.FullName);
// End the response
Response.End();
}

Now i know the response.End() will stop every thing and return the value, so is there another way too do so. I need to call a function

DeleteRestoredFileForGUI(restoredFilename);

to delete the file but dont know where to put it.. i tried putting before and after Response.End() but it does not work.