图像打印不正确的宽高比？

Question

I'm trying to print an image however my aspect ration on the A4 papaer is incorrect. I did my search and tried to use the same mm size as the A4 paper but no luck. I'm working on Unity3D 2017.0.3f using .NET 3.5.

As you can see in the image above, it's in the bottom right and leaving all the space behind. I want it just landscape normal A4 printed.

Here's my code that I'm using to print:

public void btnPrint_Click()
{
    PrintDocument pd = new PrintDocument();
    pd.PrinterSettings.PrinterName = availablePrinter[0];
    pd.DefaultPageSettings.Margins = new Margins(100, 100, 100, 100);
    pd.OriginAtMargins = true;
    pd.DefaultPageSettings.Landscape = true;
    pd.PrinterSettings.DefaultPageSettings.Landscape = true;

    pd.PrintPage += new PrintPageEventHandler(pqr);
    pd.Print();
}

void pqr(object o, PrintPageEventArgs e)
{
    Debug.Log("PrintingImage");

    System.Drawing.Image i = System.Drawing.Image.FromFile(path);
    e.Graphics.DrawImage(i, e.MarginBounds);
}

I tried using a rect and making it manually but still didn't work.

Answer 1

所以我设法解决了但改变了边距

        pd.DefaultPageSettings.Margins = new Margins(0, 0, 50, 125);