public virtual MemoryStream

After downloading and installing the ReSharper VS.NET plugin earlier tonight, I have to say I'm pretty impressed with this first release. While it's still got quite a while to go to before it gets close to IDEA, JetBrains did manage to add a lot of very useful functionality to VS.NET.

Here's an overview of the current functionality of this plugin:

• Automatic brace matching.
• Advanced syntax highlighting. This is disabled by default. To turn it on, go to Tools|Options|ReSharper|General and check "Enable Highlighting", then go to Tools|Options|Environment|Fonts&Colors and scroll down for the "ReSharper" customizations. This allows you to use different colors for constants, arguments, methods, etc.
• File Structure (Ctrl-F12) - I use this all the time in IDEA to quickly go to another method - it's similar to VS.NET's method-dropdown at the top-right of the editor, but has a keyboard shortcut for easy access and selects/filters as you start typing the method/field name.
• Alt-Up/Alt-Down to go the the next/previous method. I'm sure many people will find this useful. Personally, prefer to use Ctrl-F12.
• GoTo Type (Ctrl-N) / Goto File (Ctrl-Shift-N) - These shortcuts are extremely useful to quickly open another class/file in your project. Type Ctrl-N to get a popup-dropdown containing the classes in your project - the dropdown filters as you start typing the class name.
• Surround With... - This allows you to select a piece of code and easily surround it with an if, while, for, do or lock construct. IDEA has this functionality too and I use it often there to surround code with a try-catch, which is then generated with specific catch-blocks for all the possible checked exceptions in the selected code. C# does not have checked exceptions though, so that option is not included here. I never really use the other surround options in IDEA so don't expect to use them here either. I much prefer adding the surrounding code by hand, especially since VS.NET auto-indents the code when I close the block (one of the few VS.NET features that I find missing in IDEA)
• Select Word/Extend Selection - Very useful. VS.NET already had Ctrl-W bound to select-word, but the plugin improves upon this functionality by extending the selected block as you keep pressing Ctrl-W. So the first Ctrl-W will select the word, the second the (sub)expression, then a block of code, a method, the class, etc.
• Advanced error/warning highlighting, dynamically marking things like unused variables, type mismatches in method arguments and assignments, etc. Not nearly as good as is implemented in IDEA, but much improved over what VS.NET does on its own.
• LiveTemplates. Useful, but unfortunately only a limited amount has been supplied so far and I could not find a way to add new ones. It also did not indent the generated code correctly on my system. I'm sure these issues will be fixed in a future release of the plugin.
• Intelligent completion. You can use this for things like variable-naming (type "SomeClassName [Ctrl-Space]" and a dropdown will appear containing the proposed variable names someClassName, className and name), intelligent dropdowns for method parameters that only include available fields of the correct type, etc.
• Find Usages (Alt-F7) - this extremely useful shortcut will find all places in your solution where a method/field/property or variable is being used.
• Refactorings - only "Rename" is supported so far, which was somewhat disappointing to me. I'm sure more will be added in future releases though and one is still better than none.

On the downside, I've noticed some slowdowns where the IDE sometimes hangs for a couple seconds. This kind of stuff is to be expected with an initial beta release though. As long as they don't happen too often, it's a price I can live with to get all the added functionality mentioned above.

If you're a C# developer that uses VS.NET, I highly recommend giving the ReSharper plugin a try. Get it at http://www.jetbrains.net/resharper/.

UPDATE: If a picture is worth a thousand words, Michael Yuan's ReSharper review is about 20 times better than mine - check it out for the visual tour...

UPDATE2: Through the features page, I discovered another useful IDEA feature that made it into ReSharper: Ctrl-Shift-F7 will highlight all usages of a symbol in the current file. I also just noticed that a new build was released today - hopefully it fixes the syntax highlighting bug that was causing such frequent hangups for me that I had to temporarily disable that feature.