/// <summary>
/// take screenshot and save to a file
/// </summary>
/// <param name="filepath"></param>
/// <returns></returns>
public static string TakeScreenshot(string filepath)
{
if (string.IsNullOrEmpty(filepath))
{
filepath = string.Format(@"{0}\{1}.png", Environment.CurrentDirectory, TextHelper.RandomString(10));
}
var bmp = TakeSnapshot();
bmp.Save(filepath, ImageFormat.Png);
return(filepath);
}
