How to switch default browser for debug asp.net in visual studio 2008 / 2010?

Since system install the default browser was opera but suddenly become IE in both 2008 and 2010 versions. Default browser in my system is opera. How I can switch mak开发者_Python百科e Opera default for debug again?

In Visual Studio 2010 you can right click any aspx file in Solution Exlorer and you get an option of Browse With in the Context menu. Select Browse with and you get the list of browsers in the system. There you can select the default browser.

Add an otherwise unneeded HTML page to your app via right-clicking the project and selecting Add > HTML Page, then right-click that page and select "Browse With" For more detail, see Runscope API Tools' answer here: Set Google Chrome as the Debugging Browser in Visual Studio