C# winform通用打印方法

首先画好UserControl

然后有两种打印方式：

1，PrintControl

2，PrintControlByDraw

具体见下面的代码(部分根据您的实际情况做适当修改)：

　　　　 PrintControl方式：
　　　　 /// <summary>
        /// 打印控件,在调用该控件前，
        /// 优点：性能好
        /// 缺点：斑马打印机打出的内容很不清晰
        /// </summary>
        /// <param name="docName">打印文档名称，即打印任务队列中的名称</param>
        /// <param name="printerName">使用哪个打印机来打印，即设备和打印机中的打印机名称</param>
        /// <param name="ucToPrint">要打印的控件对象</param>
        /// <param name="isPrintView">是否只进行预览，不真正打印</param>
        public static void PrintControl(string docName, string printerName, UserControl ucToPrint,bool isPrintView)
        {
            using (var printDoc=new PrintDocument())
            {
                if (!string.IsNullOrEmpty(printerName))
                {
                    printDoc.DefaultPageSettings.PrinterSettings.PrinterName = printerName;
                }
                printDoc.DocumentName = docName;
                printDoc.PrintPage += (sender, e) => 
                {
                    ucToPrint.Show();

                    var bitMap = new Bitmap(ucToPrint.Width, ucToPrint.Height);
                    ucToPrint.DrawToBitmap(bitMap, new Rectangle(0, 0, ucToPrint.Width, ucToPrint.Height));

                    //e.Graphics.DrawImageUnscaled(bitMap, Point.Empty);
                    e.Graphics.DrawImage(bitMap, Point.Empty);
                };

                printDoc.PrintController = new StandardPrintController();

                if (isPrintView)
                {
                    using (var printViewDlg = new PrintPreviewDialog())
                    {
                        printViewDlg.Document = printDoc;

                        (printViewDlg as Form).WindowState = FormWindowState.Maximized;
                        printViewDlg.ShowDialog();
                    }//using
                }
                else
                {
                    printDoc.Print();
                }
            }//using
        }//fun

PrintControlByDraw 方式：
　　　　　/// <summary>
        /// 通过重新绘制来打印控件
        /// 优点:无论何种打印机都可以清晰打印
        /// 缺点:性能稍差
        /// </summary>
        /// <param name="docName">打印文档名称，即打印任务队列中的名称</param>
        /// <param name="printerName">使用哪个打印机来打印，即设备和打印机中的打印机名称</param>
        /// <param name="ucToPrint">要打印的控件对象</param>
        /// <param name="isPrintView">是否只进行预览，不真正打印</param>
        public static void PrintControlByDraw(string docName, string printerName, UserControl ucToPrint, bool isPrintView)
        {
            using (var printDoc = new PrintDocument())
            {
                if (!string.IsNullOrEmpty(printerName))
                {
                    printDoc.DefaultPageSettings.PrinterSettings.PrinterName = printerName;
                }
                printDoc.DocumentName = docName;
                printDoc.PrintPage += (sender, e) =>
                {
                    //调用的目的是为了执行Load方法，加载控件信息
                    //当然，如果你在控件的构造方法中已加载信息，那么
                    //这个方法可以不调用
                    ucToPrint.Show();

                    DrawControlContent(ucToPrint, e.Graphics, Brushes.Black);
                };

                printDoc.PrintController = new StandardPrintController();

                if (isPrintView)
                {
                    using (var printViewDlg = new PrintPreviewDialog())
                    {
                        printViewDlg.Document = printDoc;

                        (printViewDlg as Form).WindowState = FormWindowState.Maximized;
                        printViewDlg.ShowDialog();
                    }//using
                }
                else
                {
                    printDoc.Print();
                }
            }//using
        }//fun

        /// <summary>
        /// 绘制控件上的DataGridView
        /// </summary>
        /// <param name="dgv"></param>
        /// <param name="g"></param>
        /// <param name="b"></param>
        /// <param name="pt">DataGridView的坐标</param>
        /// <param name="columnHeaderTopMargin">列这一行的上边距</param>
        private static void DrawDataGrid(DataGridView dgv, Graphics g, Brush b,Point pt,int columnHeaderTopMargin)
        {
            //var bitMap = new Bitmap(dgv.Width, dgv.Height);
            //dgv.DrawToBitmap(bitMap, new Rectangle(pt.X,pt.Y, dgv.Width, dgv.Height));
            //g.DrawImage(bitMap, Point.Empty);
            Point dgvPt = pt;
            dgvPt.Y += columnHeaderTopMargin;//列头上边距

            using (Font colFont = new Font(dgv.Font, FontStyle.Bold))//列字体要加粗
            {
                foreach (DataGridViewColumn col in dgv.Columns)
                {
                    g.DrawString(col.HeaderText, colFont, b, dgvPt);

                    dgvPt.X += col.Width;
                }
            }

            dgvPt.X = pt.X;
            dgvPt.Y += dgv.ColumnHeadersHeight;
            //需要再减一点，不然第一行离列头有点远
            int yToCut = 3;//单位为像素
            if (dgvPt.Y>yToCut)
            {
                dgvPt.Y -= yToCut;
            }

            foreach (DataGridViewRow r in dgv.Rows)
            {
                foreach (DataGridViewCell cell in r.Cells)
                {
                    int textWidth = (int)(g.MeasureString(cell.Value.ToString(), dgv.Font).Width);
                    int textRowCount = textWidth / cell.OwningColumn.Width;
                    if (textRowCount < 1)
                    {
                        textRowCount = 1;
                    }
                    g.DrawString(cell.Value.ToString(), dgv.Font, b, new Rectangle(dgvPt.X, dgvPt.Y, cell.OwningColumn.Width, r.Height * textRowCount));

                    dgvPt.X += cell.OwningColumn.Width;
                }
                dgvPt.X = pt.X;
                dgvPt.Y += r.Height;
            }
        }

        /// <summary>
        /// 绘制控件内容
        /// </summary>
        /// <param name="c">要绘制的控件</param>
        /// <param name="g">打印机的绘图画面，使用它来将内容绘制到打印机上</param>
        /// <param name="b">使用的画刷</param>
        private static void  DrawControlContent(Control c, Graphics g,Brush b)
        {
            foreach (Control subC in c.Controls)
            {
                if (subC.HasChildren)
                {
                    DrawControlContent(subC, g,b);

                    Point pt = new Point(0, 0);
                    GetControlAbsoluteLocation(subC, ref pt);

                    if (subC is Panel)
                    {
                        //Panel直接需要划横线
                        g.DrawLine(Pens.Black, new Point(pt.X,pt.Y+subC.Height),
                            new Point(pt.X+subC.Width,pt.Y+subC.Height));
                    }
                    else if (subC is DataGridView)
                    {
                        DrawDataGrid(subC as DataGridView, g, b, pt,3);
                    }
                }
                else
                {
                    Point pt = new Point(0, 0);
                    GetControlAbsoluteLocation(subC, ref pt);

                    if (subC is Label)
                    {
                        g.DrawString(subC.Text, subC.Font, b, pt);
                    }
                    else if (subC is PictureBox)
                    {
                        g.DrawImage((subC as PictureBox).Image,new Rectangle(pt.X,pt.Y,subC.Width,subC.Height) );
                    }
                   
                }
            }//foreach
        }

        /// <summary>
        /// 获取控件的绝对位置，
        /// 即控件相对于Form的坐标
        /// </summary>
        /// <param name="c"></param>
        /// <param name="pt">返回的坐标信息</param>
        private static void  GetControlAbsoluteLocation(Control c,ref Point pt)
        {
            if (c.Parent == null)
            {
                return;
            }
            if (c is Form)
            {
                return;    
            }
            pt.X += c.Location.X;
            pt.Y += c.Location.Y;

            GetControlAbsoluteLocation(c.Parent, ref pt);
        }

　　　　　　 
　　　　　　示例：
　　　　　　 // ucTest就是一个UserControl
　　　　　　　using (ucTest uc = new ucTest(orderDto))
            {
                OrderPrint.PrintControlByDraw("发货单",printerName, uc, isPrintPreview);
                // OrderPrint.PrintControl("发货单",printerName, uc, isPrintPreview);
            }