Response.Redirect simply sends a message to the browser, telling it to move to another page.

For Example:

1. Response.Redirect("default.aspx");
2. Response.Redirect("http://www.c-sharpcorner.com/")

Server.Transfer is similar in that it sends the user to another page:

For Example:

Server.Transfer("default.aspx").

Difference between Server.Transfer method and Response.Redirect method.

Response.Redirect should be used when:

• we want to redirect the request to some plain HTML pages on our server or to some other web server.
• we do not need to preserve Query String and Form Variables from the original request.
• we want our users to be able to see the new redirected URL where he is redirected in his browser (and be able to bookmark it if its necessary)

Server.Transfer should be used when:

• we want to transfer current page request to another .aspx page on the same server.
• we want to preserve Query String and Form Variables (optionally).
• we don't need to show the real URL where we redirected the request in the users Web Browser.