Here is a snap example of using the CSPhantomJS using C#:

CSPhantomJS-Snap-Example.cs

//Create a new instance of the library with the path of 
//the phantomjs libraries:
_WebpageCapture = new CSPhantomJS(@"../../../libs/phantomjs/bin", "UserName", "RegKey");

_WebpageCapture.DestinationFormat = DestinationFormat.Image;
_WebpageCapture.ImageFormat = "1920px";
_WebpageCapture.URL = "https://www.microncode.com";
_WebpageCapture.OutFile = _FileName;

//You can add an additional arguments:
//_WebpageCapture.ArgsAdditional = "-more arg1";

//Or if you want to set your own arguments:
//_WebpageCapture.ArgsDirect = "";

//You can get the final arguments of the command:
//string cmd = _WebpageCapture.GetArgs();

//On start event
_WebpageCapture.OperationStart += (o) =>
{
    Debug.WriteLine("Start");
};

//On progress event
_WebpageCapture.OperationOutput += (o, s) =>
{
    Debug.WriteLine(s);
};

//On closed
_WebpageCapture.OperationClosed += (o) =>
{
    Debug.WriteLine("Closed");
};

//On done
_WebpageCapture.OperationDone += (o) =>
{
    this.Invoke(new Action(() =>
    {
        Debug.WriteLine("Done");
    }));
};

//Start the capture operation
_WebpageCapture.Capture();