Class ImageConverter

 1private class MyImageSaveOptions : ImageSaveOptions
 2{
 3    private const string ResultBase = "result/images/";
 4    public override Stream GetStream(int pageIndex)
 5    {
 6        return File.Create(ResultBase + "res_" + pageIndex + ".png");
 7    }
 8}
 9ImageConverter converter = new ImageConverter();
10LoadOptions loadOptions = new LoadOptions();
11loadOptions.InputFile = "Template.xlsx";
12ImageSaveOptions saveOptions = new MyImageSaveOptions();
13converter.Process(loadOptions, saveOptions);