ThreadStatic Member Lose Value On Every Page Load?

Aug 20, 2010

[ThreadStatic]

private static BackgroundProcessManager2 _Instance;

public static BackgroundProcessManager2 Instance
{
get
{
if (_Instance == null) // **
{
_Instance = new BackgroundProcessManager2();
}
return _Instance;
}
}

And ussually everything is fine, but this time on every page load _Instance is null.

Additionally, i have very strange error when trying to watch _Instance in line marked **:

Cannot fetch the value of field '_Instance' because information about the containing class is unavailable.

What can couse this class to upload?

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