FastReport

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using System;
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using System.Data;
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using System.IO;
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namespace MVC.Service
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{
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    public class DataSetService
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    {
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        public string ReportsPath { get; private set; }
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        public DataSet DataSet { get; private set; } = new DataSet();
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        public DataSetService()
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        {
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            SetReportsFolder();
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            SetDataSet();
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        }
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        private void SetReportsFolder() => ReportsPath = FindReportsFolder(Environment.CurrentDirectory);
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        private void SetDataSet() => DataSet.ReadXml(Path.Combine(ReportsPath, "nwind.xml"));
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        private string FindReportsFolder(string startDir)
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        {
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            string directory = Path.Combine(startDir, "Reports");
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            if (Directory.Exists(directory))
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                return directory;
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            for (int i = 0; i < 6; i++)
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            {
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                startDir = Path.Combine(startDir, "..");
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                directory = Path.Combine(startDir, "Reports");
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                if (Directory.Exists(directory))
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                    return directory;
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            }
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            throw new Exception("Demos/Reports directory is not found");
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        }
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    }
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}