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In non-Clickonce cases, there is no automatic upgrade - you have to call Upgrade yourself. Here is one idea for determining when to call Upgrade:

Have a boolean setting called CallUpgrade with a default value of true. When your app starts up, do the following:

if (Properties.Settings.Value.CallUpgrade)

{

Properties.Settings.Value.Upgrade();

Properties.Settings.Value.CallUpgrade = false;

}

This will ensure that Upgrade( ) is called only the first time the application runs after a new version is deployed.