public static class Extension

    {

        public static DataTable ListToDataTable<T>(this IList<T> data, string tableName)

        {

            DataTable table = new DataTable(tableName);

            //special handling for value types and string

            if (typeof(T).IsValueType || typeof(T).Equals(typeof(string)))

            {

                DataColumn dc = new DataColumn("Value");

                table.Columns.Add(dc);

                foreach (T item in data)

                {

                    DataRow dr = table.NewRow();

                    dr[0] = item;

                    table.Rows.Add(dr);

                }

            }

            else

            {

                PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T));

                foreach (PropertyDescriptor prop in properties)

                {

                    table.Columns.Add(prop.Name,

                    Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType);

                }

                foreach (T item in data)

                {

                    DataRow row = table.NewRow();

                    foreach (PropertyDescriptor prop in properties)

                    {

                        try

                        {

                            row[prop.Name] = prop.GetValue(item) ?? DBNull.Value;

                        }

                        catch (Exception ex)

                        {

                            row[prop.Name] = DBNull.Value;

                        }

                    }

                    table.Rows.Add(row);

                }

            }

            return table;

        }

    }