【拿来就能用】C#用于打印机打印的类

之前写过一个“C#WinForm程序中选择打印机打印”的文章，但在使用过程中，尤其是生成Word文档时，会感觉系统响应较慢。如果不需要留存打印文档的电子版，可以使用下面的类直接打印。相比之前的方法，这种方法更简单，可以绘制文字、线段、图片。

打印响应速度很快，比之前的方法更好用。

需要引用：

using System.Drawing;

using System.Drawing.Printing;

public class PrnBill
    {
        private Font titleFont;//标题字体;
        private Font font;//正文字体
        private Font smallFont;  //小字体;
        private PrintDocument printDoc;        

        // 使用的打印机名称
		private string printerName;
        public string PrinterName
        {
            get { return printerName; }
            set { printerName = value; }
        }

        // 打印份数
		private short copies;
        public short Copies
        {
            get { return copies; }
            set { copies = value; }
        }

		//标题内容
        private string title;
		public string Title
		{
			get{return title;}
			set{title = value;}
		}

        //姓名
        private string cusName;
        public string CusName;
        {
            get{return cusName;}
            set{cusName = value;}
        }

		//正文内容
        private string contents;
        public string Contents
        {
            get { return contents; }
            set { contents = value; }
        }
		
		//标志图片
		private Image logoImg;
        public Image LogoImg
        {
            get { return logoImg; }
            set { logoImg = value; }
        }

		//构造函数
        public PrnBill(string printer, short prnCopies, string _title, string _contents,Image _logoImg)
        {
            printDoc = new PrintDocument();
            printDoc.PrintPage += new PrintPageEventHandler(pd_PrintBill);
            titleFont = new System.Drawing.Font("宋体", 25f);//标题字体
            font = new System.Drawing.Font("宋体", 14f);//字体
            smallFont = new System.Drawing.Font("宋体", 12f);//字体
            
            printerName = printer;
            copies = prnCopies;
            logoImg = _logoImg;
            contents = _contents;
        }

        // 打印的方法
        public void Print()
        {
            printDoc.PrinterSettings.PrinterName = printerName;
            printDoc.PrinterSettings.Copies = copies;
            printDoc.Print(); //调用pd_PrintBill
        }

        /// 

        /// 打印主过程
        /// 
        private void pd_PrintBill(object sender, PrintPageEventArgs e)
        {
            int topMargin = 24; //上边距
            int leftMargin = 50;  //左边距
            int rowHeight = 30;  //行高
            int lineStartY = 117;  //画线起始位置
            int currentPosY = lineStartY - rowHeight;   //当前绘制位置
            int currentLineY = lineStartY;  //当前画线位置
            int padding = 2;  //调整位置使用
            float fdxsLogo = 0.1f;  //图片缩放系数
            Pen penLine;  //画笔

            //因需要绘制表格，故把表格第一行的四个格子宽度放到了变量
            int w_HA = 148;
            int w_HB = 226;
            int w_HC = 152;
            int w_HD = 175;

            //开始画文字
            DrawString(e.Graphics, "业务受理单", titleFont, SystemBrushes.WindowText, new Rectangle(leftMargin, topMargin, w_HA + w_HB + w_HC + w_HD + 15, 70), StringAlignment.Center, StringAlignment.Center);
            DrawString(e.Graphics, "姓名：" + cusName, font, SystemBrushes.WindowText, new Rectangle(leftMargin, currentPosY, w_HA + w_HB, rowHeight), StringAlignment.Near, StringAlignment.Center);     
            currentPosY += rowHeight;
            DrawString(e.Graphics, "事项内容："+contents, font, SystemBrushes.WindowText, new Rectangle(leftMargin, currentPosY, w_HA+w_HB, rowHeight), StringAlignment.Near, StringAlignment.Center);
       
            //这里可以按照自己需要，继续添加内容……

            //在合适的位置绘制图片
            if (logoImg != null)
            {
                e.Graphics.DrawImage(logoImg, new RectangleF((leftMargin * 2 + w_HA + w_HB + w_HC + w_HD - logoImg.Width * fdxsLogo) / 2, currentPosY, logoImg.Width * fdxsLogo, logoImg.Height * fdxsLogo));
            }

            //开始画横线
            penLine = new Pen(Color.Black, 1f);
            penLine.DashStyle = System.Drawing.Drawing2D.DashStyle.DashDot;
            e.Graphics.DrawLine(penLine, leftMargin, currentLineY, w_HA + w_HB + w_HC + w_HD + leftMargin, currentLineY);
        }

        /**/
        /// 

        /// 绘制文字的具体方法
        /// 
        /// 定义画布
        /// 需要绘制的文字
        /// 字体
        /// 笔刷
        /// 绘制区域
        /// 水平对齐方式
        /// 垂直对齐方式
        private void DrawString(Graphics g, string s, Font font, Brush brush, Rectangle rect, StringAlignment alignment, StringAlignment lineAlignment)
        {
            StringFormat sf = new StringFormat();
            sf.Alignment = alignment;
            sf.LineAlignment = lineAlignment;
            g.DrawString(s, font, brush, rect, sf);
        }
    }