Uploadfile Control not working for file size > 3MB.

Question

 I m using uploadfile control in ASP.NET(C#) so that user can browse the file. After that i want  to use that path of the browse file to do my further processing. Its working fine if i m browsing file of size less than 3 MB. When i select a file of large size and click on the browse button which is in a control then it gives an error that PaGE CANNOT bE DISPLAYED. IS there any restriction for uploadfile control regarding the file size.....? Kindly help.