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this is potentially an expensive call:

[code]

 try

+          {

+            tuningDetails = d[channel.IdChannel];

+          }

+          catch (KeyNotFoundException)

+          {

+            tuningDetails = new List<TuningDetail>();

+          }

[/code]

use .TryGetValue whenever possible for performance.

[code]

IList<TuningDetail> tuningDetails;

if (!d.TryGetValue(channel.IdChannel, out tuningDetails) )

{

   tuningDetails = new List<TuningDetail>();

}

[/code]

/gibman