Replace usage of a class in a specific project

Question

I'm using VS2010 with Resharper 5.1.

I have two projects, a library project (Lib) and an application project (App), App references Lib.

Lib contains a class X which is used in both App and Lib. In App i now want to replace all usages of X with class Y. In my case Y is unrelated to X, but it could inherit from X if it makes refactoring easier.

My current plan to use the "Find usages" feature, group by project and change the usages one by one. Is there an easier/automated way to do this?

what about quick replace in current project - replace class name X with Y? — wiero
– wiero, Commented Oct 6, 2011 at 9:52

AakashM · Accepted Answer · 2011-10-06 11:06:01Z

4

Structural Search and Replace is your friend here. You get to it through ReSharper | Find | Search with Pattern....

Define a placeholder of type X, name it TX.
Make your Find pattern $TX$
Specify to "Look in" "Project"
As a check, carry out the search - you should see all the usages of X
Click the Replace toggle button
Make the Replace pattern the fully-qualified name of Y
Click Replace

ReSharper will show you all the mentions of X it wants to replace - ensure the checkbox at the top of the tree is checked, then click Replace.

edit

It is indeed by using a type placeholder in our Find pattern that ensure that only references to the type X, rather than anything else named X, are renamed.

If you would prefer to end up with

using A.B.C;

/* later */
Y obObject = ...

rather than

A.B.C.Y myObject

I think you can achieve this through:

In ReSharper | Options, Tools | Code Cleanup, define a new profile which has just "Optimize 'using' directives" checked
In ReSharper | Options, Languages | C# | Namespace Imports add A.B.C to "Namespaces that should always be imported`
Run ReSharper | Tools | Cleanup Code using the profile you just defined
Tidy up by removing A.B.C from the namespaces list you added it to

although this will also clean up all other usings, which might make the version control diff a bit larger than you want.

edited Oct 6, 2011 at 11:06

answered Oct 6, 2011 at 9:52

AakashM

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1 Comment

Bubblewrap Over a year ago

I assume the find pattern ensures that only references to the class X are replaced, and not occurences of X in comments or as property names? Also, as a follow up, what would be the easiest way to replace the fully-qualified names and add the correct using statements to the relevant files?

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