How to pass parameter to my event handling code for printing image

Question

I am using the below code to print an image from my C# code. Can some body tell me how to pass the filePath as an argument when i assign my event handler ?

  public static bool PrintImage(string filePath)
    {
        PrintDocument pd = new PrintDocument();
        pd.PrintPage += new PrintPageEventHandler(printPage);
        pd.Print();
        return true;

    }
    private static void printPage(object o, PrintPageEventArgs e)
    {
        //i want to receive the file path as a paramter here.

        Image i = Image.FromFile("C:\\Zapotec.bmp");
        Point p = new Point(100, 100);
        e.Graphics.DrawImage(i, p);
    }

Answer 1

The simplest way is to use a lambda expression:

PrintDocument pd = new PrintDocument();
pd.PrintPage += (sender, args) => DrawImage(filePath, args.Graphics);
pd.Print();

...

private static void DrawImage(string filePath, Graphics graphics)
{
    ...
}

Or if you've not got a lot to do, you could even inline the whole thing:

PrintDocument pd = new PrintDocument();
pd.PrintPage += (sender, args) => 
{
    Image i = Image.FromFile(filePath);
    Point p = new Point(100, 100);
    args.Graphics.DrawImage(i, p);
};
pd.Print();

Answer 2

The easiest way to do this is use an anonymous function as the event handler. This will allow you to pass the filePath directly

public static bool PrintImage(string filePath) {
  PrintDocument pd = new PrintDocument();
  pd.PrintPage += delegate (sender, e) { printPage(filePath, e); };
  pd.Print();
  return true;
}

private static void printPage(string filePath, PrintPageEventArgs e) {
  ...
}