How to disable undesirable auto-complete with Visual Studio + ReSharper?

Question

I'm using Visual Studio 2010 and ReSharper 5.

I define this at the top of a .cs file.

#if X86 using size_t = System.Int32; #else using size_t = System.Int64; #endif 

Then I can use size_t and know that it is a native integer, 32 bits if compiled as a 32 bit assembly, and 64 bits if compiled as a 64 bit assembly. (for those that are curious, the alternatives are always use Int64, or branch at runtime on IntPtr.Size == 4 and have two versions of the code. I prefer this solution.)

However, if I type size_t and hit space, it will be automatically converted to Int64 (or Int32 if X86 is defined). Obviously that's undesirable.

I went into ReSharper options and went to Environment \ Intellisence \ Completion behavior and disabled all the checkboxes under "Automatically complete single item with:".

It still happens, is there anything else I can try?

Answer 1

I ran into a similar issue (using VS2013 and Resharper 8.2).

To stop the undesirable auto-completion on every "space" hit, I had to disable IntelliSense completion on "space" both within VS and R# options:

1. VS > Tools > Options > Text Editor > C# > IntelliSense > "Committed by pressing the space bar" checkbox
2. VS > Resharper > Options > Environment > IntelliSense > Completing Characters > C# "Complete on space" checkbox

Cheers!

Answer 2

One solution would be to toggle to suggestion completion mode for intellisense. The default key binding for the toggle is Ctrl+Alt+Space. When in suggestion mode, it will only change what you type if you explicitly choose a value to change to. You can read more about it here:

http://blogs.msdn.com/b/zainnab/archive/2012/05/01/9943045.aspx

In the VS2017 menu hierarchy the suggestion mode can be found under:

Edit -> Intellisense -> Toggle Completion Mode 

Additionally when the suggestion mode is enabled, it is visually indicated by the following button (and can also be enabled/disabled by clicking the button):