Visual Studio 2005/2012: How to keep first curly brace on same line?

Solution 1:

C#

1. In the Tools Menu click Options
2. Click Show all Parameters (checkbox at the bottom left) (Show all settings in VS 2010)
3. Text Editor
4. C#
5. Formatting
6. New lines

And there check when you want new lines with brackets

Css:

almost the same, but fewer options

1. In the Tools Menu click Options
2. Click Show all Parameters (checkbox at the bottom left) (Show all settings in VS 2010)
3. Text Editor
4. CSS
5. Format

And than you select the formatting you want (in your case second radio button)

For Visual Studio 2015:

Tools → Options

In the sidebar, go to Text Editor → C# → Formatting → New Lines

and uncheck every checkbox in the section "New line options for braces"

For Mac OS users:
Preferences → Source Code → Code Formatting → choose what ever you want to change (like C# source code) → C# Format → Edit -→ New Lines

Solution 2:

Tools -> Options -> Text Editor -> C# -> Formatting -> New Lines -> New Line Options for braces -> Uncheck all boxes.

Solution 3:

The official MS guidelines (at the time in 2008) tells you to have the curly brace on the same line as the method/property/class and many other things which are not enforced in Visual Studio.

You can change all these auto-text settings under:
Tools -> Options -> Text Editor -> [The language you want to change]

UPDATE: This was based on the book "Framework Design Guidelines" written by some of the core-people from the .NET-team. If you look at the source-code for the likes of ASP.NET MVC, this is no longer accurate.