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// DataSet manipulation with SageFrame.Web.Utilities.DataSourceHelper under SageFrame.Common

DataSet dataset = ...
if (dataset != null && dataset.Tables.Count > 0)
{
    List<SettingInfo> lstSettingInfo = DataSourceHelper.FillCollection<SettingInfo>(dataset.Tables[0].CreateDataReader());
    if (lstSettingInfo == null)
        return null;
}