Question

Is it possible to make a call to the Google Charts API in a console app and save the result as a JPEG or PNG file? I can do it easily in a web app, just not quite sure how to do it in C#.

Many thanks-

https://chart.googleapis.com/chart

Answer 1

You could use the googlechartsharp wrapper for the Charts API to get a URL at which you can view the chart.

Using the HttpWebRequest and HttpWebResponse classes (or the WebClient class as per Joey’s answer), you could capture the response stream as a byte array (the image) and write that to a file with the proper extension (a *.png file). Something like:

string chartUrl = chart.GetUrl();
byte[] chartBytes = null;
WebClient client = new WebClient();
chartBytes = client.DownloadData(chartUrl);

using (var memStream = new MemoryStream())
{
    memStream.Write(chartBytes, 0, chartBytes.Length);
}

File.WriteAllBytes("C:\temp\myChart.png", chartBytes);