Yesterday after my talk at MS' Big>Days 2006 in Vienna I was asked how to recycle an IIS app pool from within an application / script / code. I knew I had seen it somewhere before, so I promised to post the information in my blog as soon as I had dug it up.
There are actually a few others that have posted that information before, for example on the aspitalia.com blogs - Riciclare un application pool di IIS 6 da codice C#. It does exactly what the post title implies: recycling an application pool with C#. This approach uses ADSI (aka System.DirectoryServices) to do the bidding, and I have the non-ASP.NET bound version here:
public void RecycleAppPool(string machine, string appPoolName)
string path = "IIS://" + machine + "/W3SVC/AppPools/" + appPoolName;
DirectoryEntry w3svc = new DirectoryEntry(path);
So, now the question arises - how do I know the names of the app pools? One way is to enumerate all the existing application pools on a box - the blog post Control the Application Pool shows how to pull it off using WMI.
Finally, I went to the authoritative source, Chris Adams blog. He has a post up titled Recycling Application Pools using WMI in IIS 6.0, so this is along the lines of the previous one. He has samples in VBScript as well as C# online. He also shows a quick way (end of the post) how to find out which app pool is servicing which IIS Web application.
I think this should cover the topic nicely Also looking forward to how easy recycling app pools will be in IIS7.