使用ReSharper为属性生成只读字段

Question

Since I didn't find whether is ReSharper capable of generating a private readonly backing field for a property, is there a way how to define custom script that could do that?

Imagine you have a property

public Type PropertyName { get; set; }

and then you set a cursor on this line, press Alt+Enter and there would be a menu item which transforms the property to

private readonly Type propertyName;

public Type PropertyName { get { return propertyName; } }

I have found myself in the situation where I would actually use this many times.

Answer 1

With R#, you can create a Live Template . In this case:

1. ReSharper > Templates Explorer
2. Live Templates Tab > New Template (small grid icon)
3. Shorcut: propReadOnly (this will be the shortcut used with intellisense)
4. Description: whatever works for you...
5. Available: in C# 2.0 where type member declaration is allowed

6. Create the template as:

   private readonly $Type$ $propertyName$;

   public $Type$ $PropertyName$ { get { return $propertyName$; } }

Enclosing text in $SomeText$ will designate that text as a variable for R# to maninpulate.

In the variable name panel:

Name             Value             Editable Occurence
Type             Choose Macro*     #2
PropertyName     Choose Macro*     checkbox is checked
propertyName     (see below)       not editable
                 Macro > - Value of annother variable with the first character in lower case
                         - Select "PropertyName" as the other variable

*Choose Macro is displayed when no macro is selected; this is the default setting

Save and you can use the template immediately in Visual Studio by typing the shortcut used, ie, "propReadOnly"

Answer 2

You could work the other way around with ReSharper .

Create your private readonly backing field:

private readonly Type propertyName;

Then press alt + insert to generate the property.

Also see: Generating Properties

Edit:

Another option is to first create a property like this:

public MyProperty PropertyName { get { return propertyField;  } }

Then press alt + enter with your cursor on the fieldName to create the field. You will then jump to the field and by pressing alt + enter again Resharper will make it a Constructor parameter. Last but not least you'll now get the option to press alt + enter again to make the field readonly.