Code Completion

Match case

Select this option if you want letter case to be taken into account when suggesting matches for code completion. Choose whether you want to match case for the first letter of for all letters. This will also affect how CamelCased identifiers are matched. If First letter only is chosen, you will need to type the first letter of a CamelCased identifier in the upper case, and then you can type middle letters that you want to match in the upper or lower case. If All letters is chosen, you will need to type all dividing letters of a CamelCased identifier in the upper case to match it.

Automatically insert single suggestions for

Choose whether you want to automatically complete your code if there's just one code completion suggestion for basic and/or type-matching completion.

Sort suggestions alphabetically

Choose this option if you want to sort items in the suggestions list in the alphabetical order instead of sorting them by relevance.

You can change this behavior at any time by clicking the or icons in the suggestion list.

Show suggestions as you type

Select this checkbox if you want the suggestion list to be invoked automatically, without having to call completion explicitly.

Preselect the best match to insert it by pressing dot, parentheses, and other keys

If selected, the best match in the auto-completion popup is pre-selected with hard selection, otherwise with soft selection.

• Hard selection works the same as if the completion popup was invoked explicitly, you can insert the selected item with Enter, Tab, Space, as well as dot, open parenthesis, open bracket, semicolon, and so on (depending on the context). Completion on Space can be enabled or disabled with the Whitespace inserts selected suggestion... checkbox on this settings page.

  

• Soft selection will gently highlight the best match, but it will not interfere with typing — you can either continue typing to close the popup or choose the desired item manually. But if you see that the highlighted item is suggested correctly, you can still insert it by pressing Tab. Optionally you can also use Enter for inserting the suggestion with the soft selection — this can be enabled with the Enter inserts suggestion... checkbox on this settings page.

  

Show the documentation popup in

Select this checkbox to have JetBrains Rider automatically show a popup for each item in the suggestions list with the documentation for the class, method, or field currently highlighted in the lookup list.

In the field to the right, specify the delay (in milliseconds), after which the popup should appear.

Automatically insert parenthesis after completion:

This group of options defines how parentheses are inserted when completing a method.

Show import items in basic completion

Using these checkboxes, you can optionally add completion items suggested by the Second basic completion to the completion lists of Basic completion.

Enter inserts suggestion even if completion popup is not focused (gray selection)

When cleared, this option allows additionally disabling completion on pressing Enter (it will insert a new line) only when the Preselect the best match... option above is cleared and the best match is not pre-selected:

Whitespace inserts selected suggestion when completion popup is focused (blue selection)

When cleared, this option allows disabling completion on pressing Space (it will insert a whitespace) when the Preselect the best match... option above is enabled and the best match is pre-selected: