How to Turn Off Showing Whitespace Characters in Visual Studio IDE

In Visual Studio 2010 the key sequence CTRL+E, S will also toggle display of whitespace characters.

In Visual Studio 2015 From the top menu

Edit -> Advanced -> View White Space

or CTRL + E, S

CTRL+R, CTRL+W : Toggle showing whitespace

or under the Edit Menu:

[BTW, it also appears you are using Tabs. It's common practice to have the IDE turn Tabs into spaces (often 4), via Options.]

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