it is very simple with asp net .

Put a File Upload Button in yours controls.

suppose there is a button on urs controlls READ.

on the event handler Read on click event use this Code.

suppose FileUpload button have the ID

File1.PostedFile.SaveAs(Server.MapPath(filename to save));

for reading a file

String strXMLFileContent = "";
using (StreamReader SR = new StreamReader(Server.MapPath(FIle Name on which you have saved)))
{
while (SR.EndOfStream == false)
{
strXMLFileContent += SR.ReadLine();

}
SR.Close();
}


to delete File


File.Delete(Server.MapPath(Filename to delete from Server);