IIS6: Neuen ApplicationPool anlegen

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/// <summary>
///   Updated or creates the application pool for classic .net 4.
/// </summary>
/// <param name = "poolName">Name of the pool.</param>
public void SetPool(string poolName)
{
  using (var w3svc = new DirectoryEntry("IIS://localhost/W3SVC/AppPools"))
  {
    w3svc.RefreshCache();
    //if you want to assign existing application pool, get that
    Trace.WriteLine("getting app pool");
    var appPool = w3svc.Children.OfType<DirectoryEntry>().FirstOrDefault(child => poolName.Equals(child.Name, StringComparison.OrdinalIgnoreCase))
      ?? w3svc.Children.Add(poolName, "IIsApplicationPool");
    if (Environment.Is64BitOperatingSystem)
      appPool.InvokeSet("Enable32BitAppOnWin64", true);
    appPool.InvokeSet("AppPoolIdentityType", 2);
    appPool.InvokeSet("AppPoolState", 2);
    appPool.InvokeSet("Win32Error", 0);
    appPool.InvokeSet("AppPoolCommand", 1);
    appPool.CommitChanges();
  }
}