Problem with Visual Studio and .NET framework

From a few days ago I'm facing annoying problems with Visual Studio and .net framework. First I couldn't use breakpoints, but after a few changes I'm able to.

Yesterday, I've changed my Model of Entity Framework and renamed a few columns. Now the web server assumes that no change have been made.

I've made a simple test: removed a condition that I had in my masterpage where I checked a session and created a breakpoint there, when I run it VS goes to the breakpoint, the condition isn't there but he keeps working like it was.

I've tried t开发者_运维技巧o use the fusion log to check assembly errors on run time but none give me errors.

I can only assume that I'm not running the "newest" version of the project but I don't know why.

It sounds like your dlls are out of date. Try using the option "Clean Solution" and then re-build the solution.