new PrinterMargins(20,20,20,20,787,1129)

//此步最好在初始化，document 的時候就設定好邊距，否則後面邊距設定後，還有一些預設的X1,Y1非設定的值不會變化，會是預設的100，影響了列印時整個座標的結果。
            PrintDocument.DefaultPageSettings.Margins.Top = printerMargins.Top;
            PrintDocument.DefaultPageSettings.Margins.Bottom = printerMargins.Bottom;
            PrintDocument.DefaultPageSettings.Margins.Left = printerMargins.Left;
            PrintDocument.DefaultPageSettings.Margins.Right = printerMargins.Right
            PrinterMargins.Bottom = printerMargins.Bottom;
            PrinterMargins.Top = printerMargins.Top;
            PrinterMargins.Left = printerMargins.Left;
            PrinterMargins.Right = printerMargins.Right;
            PrinterMargins.Width = printerMargins.Width;
            PrinterMargins.Height = printerMargins.Height;