解析.CSV文件并以XML格式填充数据

I am trying to display a real time graph using the data which is coming from a device attached to a external source, the data coming from the device will be a .csv file, now i want to use this data and populate the content in an XML file and display the graph with XML datasource. Is it good doing it using XML or i should go for MySQL database keeping performance in mind? And After parsing the .CSV file line by line, how do i populate the data in XML in C#? Thanks in advance. I am trying to display a real time graph using