CODEWITHSUNDEEP
c#visual-studio-2008
JacquesB
JacquesB

Reputation: 42669

Write custom refactorings for Visual Studio

Is there a way to write custom refactorings or code transformations for Visual Studio?

An example: I have a codebase with a billion instances of:

DbConnection conn = null;
conn = new DbConnection();
conn.Open();
...a number of statements using conn...
conn.Close();
conn = null;

I would like to transform this into:

using (DbConnection conn = GetConnection()){
   ...statements...
}

Everywhere the above pattern appears.

Edit: The above is just an example. The point is that I need to do a number of code transformations which are too complex to perform with a text-based search-replace. I wonder if I can hook into the same mechanism underlying the built-in refactorings to write my own code transformations.

Upvotes: 6

Views: 1354

Answers (3)

Dmitri Nesteruk
Dmitri Nesteruk

Reputation: 23799

As Marc said, this is more of a 'replace' thing than a refactoring. But in any case, ReSharper is an option, and if you decide to use it, you can check out this guide. Good luck!

It appears that the above link is now broken, try this one instead

Upvotes: 2

Marc Gravell
Marc Gravell

Reputation: 1063013

Strictly speaking, that isn't a pure refactor, since it changes the code in a way that significantly changes the behaviour (in particular, calling Dispose()). I would hope that either "Resharper" or "Refactor! Pro" would have a bulk "introduce using" (or similar). I've checked on "Refactor! Pro" (since that is what I use), and although it detects the undisposed local (at least, it does with DbConnection conn = new SqlConnection();), it doesn't offer an automated fix (trivial to do manually, of course). I would suggest:

  • check Resharper (there is an evaluation period)
  • if not, do it manually

Upvotes: 1

Andrew Hare
Andrew Hare

Reputation: 351536

You would need to write a macro to do this.

Upvotes: 0

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