linq to csv extension method

Can be used to convert list of strongly typed objects to csv output.

    public static class extensionmethods
    {
        #region LinqToCSV
        public static string ToCsv<T>(this IEnumerable<T> items)
            where T : class
        {
            var csvBuilder = new StringBuilder();
            var properties = typeof(T).GetProperties();
            string header = string.Join(",", properties.Select(p => p.Name.ToCsvValue()).ToArray());
            csvBuilder.AppendLine(header);

            foreach (T item in items)
            {
                string line = string.Join(",", properties.Select(p => p.GetValue(item, null).ToCsvValue()).ToArray());
                csvBuilder.AppendLine(line);
            }
            return csvBuilder.ToString();
        }

        private static string ToCsvValue<T>(this T item)
        {
            if (item == null) return "\"\"";

            if (item is string)
            {
                return string.Format("\"{0}\"", item.ToString().Replace("\"", "\\\""));
            }
            double dummy;
            if (double.TryParse(item.ToString(), out dummy))
            {
                return string.Format("{0}", item);
            }
            return string.Format("\"{0}\"", item);
        }
        #endregion
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About Ronnie Diaz

Ronnie Diaz is an enterprise software engineer responsible for front-end and back-end development for companies in many industries. Heavily involved in cloud development, online retail, e-commerce and electronic ordering, fulfillment and customer relational systems.

Posted on March 11, 2013, in Uncategorized and tagged , , , , . Bookmark the permalink. Leave a comment.

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