void LoadSdkValues(IPhoneSdkVersion selectedVersion)
        {
            sdkStore.Clear();
            sdkStore.AppendValues(GettextCatalog.GetString("Default"), IPhoneSdkVersion.UseDefault);

            int idx  = 0;
            var sdks = IPhoneFramework.GetInstalledSdkVersions(isSim);

            for (int i = 0; i < sdks.Count; i++)
            {
                var v = sdks[i];
                if (selectedVersion.Equals(v))
                {
                    idx = i + 1;
                }
                sdkStore.AppendValues(v.ToString(), v);
            }

            if (idx == 0 && !selectedVersion.IsUseDefault)
            {
                sdkStore.AppendValues(GettextCatalog.GetString("{0} (not installed)", selectedVersion), selectedVersion);
                idx = sdks.Count + 1;
            }

            sdkCombo.Active = idx;
        }