Question

In our application, based on some input data, an image will be rendered. The images are some charts. As part of our test automation I need to download those charts.

I just have image source url. How can I download the image from the source and save it to disk.

I tried of using different methods and able to download the file. But when I try to open the file, getting a message saying ‘not a valid bitmap file,or its format currently not supported.’

Here is my html

<div id="chart">
    <img id="c_12" src="Bonus/ModelChartImage?keys%5B0%5D=UKIrelandEBIT&values%5B0%5D=100&privacyModeServer=False&modelId=Bonus" alt="" usemap="#c_12ImageMap" style="height:300px;width:450px;border-width:0px;" />
<map name="c_12ImageMap" id="c_12ImageMap">

    <area shape="rect" coords="255,265,357,266" class="area-map-section" share="Core Bonus" alt="" />
    <area shape="rect" coords="128,43,229,265" class="area-map-section" share="Core Bonus" alt="" />
</map>    
</div> 

Answer 1

Found the answer. We have to set the cookie container from the web site to your request.

public static Stream DownloadImageData(CookieContainer cookies, string siteURL)
{
    HttpWebRequest httpRequest = null;
    HttpWebResponse httpResponse = null;

    httpRequest = (HttpWebRequest)WebRequest.Create(siteURL);

    httpRequest.CookieContainer = cookies;
    httpRequest.AllowAutoRedirect = true;

    try
    {
        httpResponse = (HttpWebResponse)httpRequest.GetResponse();
        if (httpResponse.StatusCode == HttpStatusCode.OK)
        {
            var httpContentData = httpResponse.GetResponseStream();

            return httpContentData;
        }
        return null;
    }
    catch (WebException we)
    {
        return null;
    }
    finally
    {
        if (httpResponse != null)
        {
            httpResponse.Close();
        }
    }
}