In Eclipse, selecting a line and pressing Alt + ↑/↓ will move the line up and down, a quick way to avoid copy&paste. Is there
This is now working out of the box with Visual Studio 2013, same way as in Eclipse.
ReSharper's Ctrl + Shift + Alt + ↑/↓/←/→ is even more powerful - when on the beginning of the line, it will move the entire line, but can also be used to move entire methods, change the order of parameters, etc.
In Visual Studio 2013 and later, this functionality is built in. ALT + UP/DOWN will move a line up or down.
If you need this functionality in VS2012 (works with VS2010 too), take a look at the MoveLine Visual Studio Extension or the Productivity Power Tools suite.
With the VSCommands extension, you have exactly that keyboard shortcut. And, by the way, a Stack OVerflow notification toolbar :)
For me in Visual Studio 2019 it comes default closed.
For open it:
Tools -> Options -> Keyboard then select Edit.MoveSelectedLinesUp, click "Press shortcut keys" input and press Alt + Up (or whatever you want for it). And the other one is Edit.MoveSelectedLinesDown, click "Press shortcut keys" input and press Alt + Down (or whatever you want for it).
In Visual Studio 2013 and later, you can move lines up and down using Alt + ↑ / Alt + ↓. Unfortunately this will not adjust the indentation if you move between blocks, as of today only ReSharper (and all other IDE's by Jetbrains including Rider) can help you with that.
To move entire blocks of code around you can move the cursor to its head and press Ctrl + m twice fast to collapse it, and then use the command above to move it around.
Here is a neat reference to all default keyboard shortcuts in different versions of Visual Studio.