can anyoen tell me when i use file upload in asp.net

Hi sanjeev kumar,

Read these links it helps you

http://aspforums.net/Threads/494969/ASPNet-FileUpload-Rename-file-name-before-saving-if-already-exists/

http://stackoverflow.com/questions/18095566/rename-file-in-c-net-when-its-is-uploaded-through-file-upload-control-and-save

Not quite sure if I understand the problem. You upload a file from your computer (e.g. sanjeev.txt) and on the server it needs to be called 123.txt ?

That would be simply a matter of

youruploadcontrol.SaveAs("somepath\\123.txt");