C# 打印文件
这几天做的功能用到了打印这个功能，直接在网上找了点demo，在这里做个备份。
1、直接打印DataTable
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; using System.Drawing; using System.Drawing.Printing; using System.Data; namespace CheckCargoNumber.Common { public class PrintInfo { public PrintInfo() { this.dataHead = "打印标题"; this.headFont = new Font("黑体", 18, FontStyle.Bold); this.dataTip = "打印日期：" + DateTime.Now.ToShortDateString(); this.tipFont = new Font("宋体", 10); this.dataFont = new Font("宋体", 10); this.landscape = false; this.autoWidth = true; } /// /// 获取设置标题头 /// public String dataHead { set; get; } /// /// 获取或设置标题格式 /// public Font headFont { set; get; } /// /// 获取或设置附加信息（打印时间等） /// public String dataTip { set; get; } /// /// 获取或设置附加信息字体格式（打印时间等） /// public Font tipFont { set; get; } /// /// 获取或设置数据字体格式 /// public Font dataFont { set; get; } /// /// 获取或设置每列的宽度,当无设置或设置列数不正确时，列宽平均分配 /// public int[] widths { set; get; } /// /// 设定是否是横向打印 /// public Boolean landscape { set; get; } /// /// 是否根据比例自动调整至可打印宽度。默认自动调整。 /// public Boolean autoWidth { set; get; } } public class HCPrintcs { int countNum = 0;//整体打印的条数 DataTable printDt; PrintInfo pInfo; public void printDataTable(DataTable dt, PrintInfo p) { this.printDt = dt; this.pInfo = p; PrintDocument pd = new System.Drawing.Printing.PrintDocument(); PrinterSettings pss = new System.Drawing.Printing.PrinterSettings(); pss.DefaultPageSettings.Landscape = pInfo.landscape; pd.PrinterSettings = pss; pd.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(pd_PrintPage); PrintPreviewDialog ppd = new PrintPreviewDialog(); ppd.Document = pd; if (printDt == null) { MessageBox.Show("出错", "没有可以打印的数据", MessageBoxButtons.OK, MessageBoxIcon.Error); } else if (ppd.ShowDialog() == DialogResult.OK) { try { pd.Print(); } catch (Exception ex) { MessageBox.Show("出错", ex.Message, MessageBoxButtons.OK, MessageBoxIcon.Error); } } } private void pd_PrintPage(object sender, PrintPageEventArgs e) { Graphics graphic = e.Graphics;//获取绘图对象 int linesPerPage = 0;//页面行号 int yPosition = 0;//绘制字符串的纵向位置 int xPosition = 0;//绘制字符串的横向位置 int leftMargin = e.MarginBounds.Left;//左边距 int topMargin = e.MarginBounds.Top;//上边距 string line = string.Empty;//读取的行字符串 int currentPageLine = 0;//当前页读取的行数 SolidBrush brush = new SolidBrush(Color.Black);//刷子 //首先打印标题 StringFormat sf = new StringFormat(); sf.Alignment = StringAlignment.Center; Rectangle rect = new Rectangle(leftMargin, topMargin, e.MarginBounds.Width, e.MarginBounds.Height); graphic.DrawString(pInfo.dataHead, pInfo.headFont, brush, rect, sf); topMargin += 35; //首先打印说明 sf = new StringFormat(); sf.Alignment = StringAlignment.Far; Rectangle rect2 = new Rectangle(leftMargin, topMargin, e.MarginBounds.Width, e.MarginBounds.Height); graphic.DrawString(pInfo.dataTip, pInfo.tipFont, brush, rect2, sf); topMargin += 25; linesPerPage = (int)((e.MarginBounds.Height - 60) / (pInfo.dataFont.GetHeight(graphic) + 2));//每页可打印的行数 //判断宽度是否有效，无效的话，重新平均定义 if (pInfo.widths == null || pInfo.widths.Length != printDt.Columns.Count) { int[] newit = new int[printDt.Columns.Count]; for (int i = 0; i < printDt.Columns.Count; i++) { newit[i] = e.MarginBounds.Width / printDt.Columns.Count; } pInfo.widths = newit; } //判断是否要自动增加宽度 if (pInfo.autoWidth) { int[] newit = new int[printDt.Columns.Count]; int s = pInfo.widths.Sum(); for (int i = 0; i < printDt.Columns.Count; i++) { newit[i] = pInfo.widths[i] * e.MarginBounds.Width / s; } pInfo.widths = newit; } //下面开始画表格 Point ptS; Point ptE; int ti = leftMargin;//先画竖道 //先判断要打印的数据（包括字段名称）是否多于每页可打印的行数，如果多则按每页可打印的行数算，否则按数据量算 float ft = (printDt.Rows.Count - countNum + 1 > linesPerPage ? linesPerPage : (printDt.Rows.Count - countNum + 1)) * (pInfo.dataFont.GetHeight(graphic) + 2);//内容占的高度 for (int j = 0; j <= printDt.Columns.Count; j++) { if (j > 0) {//如果是第一条竖线，开始点不变 ti += pInfo.widths[j - 1]; } ptS = new Point(ti, topMargin); ptE = new Point(ti, topMargin + ((int)Math.Round(ft, 0))); graphic.DrawLine(Pens.Black, ptS, ptE); } //然后画上面封顶的横道。 ptS = new Point(leftMargin, topMargin); ptE = new Point(ti, topMargin); graphic.DrawLine(Pens.Black, ptS, ptE); //然后，填入绘字段名称行 xPosition = leftMargin; yPosition = topMargin; for (int j = 0; j < printDt.Columns.Count; j++) { line = printDt.Columns[j].ColumnName; graphic.DrawString(line, pInfo.dataFont, brush, xPosition, yPosition + 1, new StringFormat()); xPosition += pInfo.widths[j]; } topMargin = topMargin + ((int)Math.Round(pInfo.dataFont.GetHeight(graphic) + 2, 0)); ptS = new Point(leftMargin, topMargin); ptE = new Point(xPosition, topMargin); graphic.DrawLine(Pens.Black, ptS, ptE); linesPerPage--;//因为已经画了标题栏，所以每页可画的条数少1 //countNum记录全局行数，currentPageLine记录当前打印页行数。 while (countNum < printDt.Rows.Count) { if (currentPageLine < linesPerPage) { xPosition = leftMargin; ft = currentPageLine * (pInfo.dataFont.GetHeight(graphic) + 2);//前面行数占的高度 yPosition = topMargin + ((int)Math.Round(ft, 0)); //绘制当前行 for (int j = 0; j < printDt.Columns.Count; j++) { line = printDt.Rows[countNum][j].ToString(); graphic.DrawString(line, pInfo.dataFont, brush, xPosition, yPosition + 1, new StringFormat()); xPosition += pInfo.widths[j]; } countNum++; currentPageLine++; //然后画下面的横道 ft = currentPageLine * (pInfo.dataFont.GetHeight(graphic) + 2);//前面行数占的高度 yPosition = topMargin + ((int)Math.Round(ft, 0)); ptS = new Point(leftMargin, yPosition); ptE = new Point(xPosition, yPosition); graphic.DrawLine(Pens.Black, ptS, ptE); } else { line = null; break; } } //一页显示不完时自动重新调用此方法 if (line == null) { e.HasMorePages = true; } else { e.HasMorePages = false; } //每次打印完后countNum清0; if (countNum >= printDt.Rows.Count) { countNum = 0; } } } }
2、打印DataGridView
using System; using System.Collections.Generic; using System.Text; using System.Drawing.Printing; using System.Drawing; using System.Windows.Forms; namespace WinSys.Common { public class Printer { private DataGridView dataview; private PrintDocument printDoc; //打印有效区域的宽度 int width; int height; int columns; double Rate; bool hasMorePage = false; int currRow = 0; int rowHeight = 20; //打印页数 int PageNumber; //当前打印页的行数 int pageSize = 20; //当前打印的页码 int PageIndex; private int PageWidth; //打印纸的宽度 private int PageHeight; //打印纸的高度 private int LeftMargin; //有效打印区距离打印纸的左边大小 private int TopMargin;//有效打印区距离打印纸的上面大小 private int RightMargin;//有效打印区距离打印纸的右边大小 private int BottomMargin;//有效打印区距离打印纸的下边大小 int rows; /**/ /// <summary> /// 构造函数 /// </summary> /// <param name="dataview">要打印的DateGridView</param> /// <param name="printDoc">PrintDocument用于获取打印机的设置</param> public Printer(DataGridView dataview, PrintDocument printDoc) { this.dataview = dataview; this.printDoc = printDoc; PageIndex = 0; //获取打印数据的具体行数 this.rows = dataview.RowCount; this.columns = dataview.ColumnCount; //判断打印设置是否是横向打印 if (!printDoc.DefaultPageSettings.Landscape) { PageWidth = printDoc.DefaultPageSettings.PaperSize.Width; PageHeight = printDoc.DefaultPageSettings.PaperSize.Height; } else { PageHeight = printDoc.DefaultPageSettings.PaperSize.Width; PageWidth = printDoc.DefaultPageSettings.PaperSize.Height; } LeftMargin = printDoc.DefaultPageSettings.Margins.Left; TopMargin = printDoc.DefaultPageSettings.Margins.Top; RightMargin = printDoc.DefaultPageSettings.Margins.Right; BottomMargin = printDoc.DefaultPageSettings.Margins.Bottom; height = PageHeight - TopMargin - BottomMargin - 2; width = PageWidth - LeftMargin - RightMargin - 2; double tempheight = height; double temprowHeight = rowHeight; while (true) { string temp = Convert.ToString(tempheight / Math.Round(temprowHeight, 3)); int i = temp.IndexOf('.'); double tt = 100; if (i != -1) { tt = Math.Round(Convert.ToDouble(temp.Substring(temp.IndexOf('.'))), 3); } if (tt <= 0.01) { rowHeight = Convert.ToInt32(temprowHeight); break; } else { temprowHeight = temprowHeight + 0.01; } } pageSize = height / rowHeight; if ((rows + 1) <= pageSize) { pageSize = rows + 1; PageNumber = 1; } else { PageNumber = rows / (pageSize - 1); if (rows % (pageSize - 1) != 0) { PageNumber = PageNumber + 1; } } } /**/ /// <summary> /// 初始化打印 /// </summary> private void InitPrint() { PageIndex = PageIndex + 1; if (PageIndex == PageNumber) { hasMorePage = false; if (PageIndex != 1) { pageSize = rows % (pageSize - 1) + 1; } } else { hasMorePage = true; } } //打印头 private void DrawHeader(Graphics g) { Font font = new Font("宋体", 12, FontStyle.Bold); int temptop = (rowHeight / 2) + TopMargin + 1; int templeft = LeftMargin + 1; for (int i = 0; i < this.columns; i++) { string headString = this.dataview.Columns[i].HeaderText; float fontHeight = g.MeasureString(headString, font).Height; float fontwidth = g.MeasureString(headString, font).Width; float temp = temptop - (fontHeight) / 3; g.DrawString(headString, font, Brushes.Black, new PointF(templeft, temp)); templeft = templeft + (int)(this.dataview.Columns[i].Width / Rate) + 1; } } //画表格 private void DrawTable(Graphics g) { Rectangle border = new Rectangle(LeftMargin, TopMargin, width, (pageSize) * rowHeight); g.DrawRectangle(new Pen(Brushes.Black, 2), border); for (int i = 1; i < pageSize; i++) { if (i != 1) { g.DrawLine(new Pen(Brushes.Black, 1), new Point(LeftMargin + 1, (rowHeight * i) + TopMargin + 1), new Point(width + LeftMargin, (rowHeight * i) + TopMargin + 1)); } else { g.DrawLine(new Pen(Brushes.Black, 2), new Point(LeftMargin + 1, (rowHeight * i) + TopMargin + 1), new Point(width + LeftMargin, (rowHeight * i) + TopMargin + 1)); } } //计算出列的总宽度和打印纸比率 Rate = Convert.ToDouble(GetDateViewWidth()) / Convert.ToDouble(width); int tempLeft = LeftMargin + 1; int endY = (pageSize) * rowHeight + TopMargin; for (int i = 1; i < columns; i++) { tempLeft = tempLeft + 1 + (int)(this.dataview.Columns[i - 1].Width / Rate); g.DrawLine(new Pen(Brushes.Black, 1), new Point(tempLeft, TopMargin), new Point(tempLeft, endY)); } } /**/ /// <summary> /// 获取打印的列的总宽度 /// </summary> /// <returns></returns> private int GetDateViewWidth() { int total = 0; for (int i = 0; i < this.columns; i++) { total = total + this.dataview.Columns[i].Width; } return total; } //打印行数据 private void DrawRows(Graphics g) { Font font = new Font("宋体", 12, FontStyle.Regular); int temptop = (rowHeight / 2) + TopMargin + 1 + rowHeight; for (int i = currRow; i < pageSize + currRow - 1; i++) { int templeft = LeftMargin + 1; for (int j = 0; j < columns; j++) { string headString = this.dataview.Rows[i].Cells[j].Value.ToString(); float fontHeight = g.MeasureString(headString, font).Height; float fontwidth = g.MeasureString(headString, font).Width; float temp = temptop - (fontHeight) / 3; while (true) { if (fontwidth <= (int)(this.dataview.Columns[j].Width / Rate)) { break; } else { headString = headString.Substring(0, headString.Length - 1); fontwidth = g.MeasureString(headString, font).Width; } } g.DrawString(headString, font, Brushes.Black, new PointF(templeft, temp)); templeft = templeft + (int)(this.dataview.Columns[j].Width / Rate) + 1; } temptop = temptop + rowHeight; } currRow = pageSize + currRow - 1; } /**/ /// <summary> /// 在PrintDocument中的PrintPage方法中调用 /// </summary> /// <param name="g">传入PrintPage中PrintPageEventArgs中的Graphics</param> /// <returns>是否还有打印页 有返回true，无则返回false</returns> public bool Print(Graphics g) { InitPrint(); DrawTable(g); DrawHeader(g); DrawRows(g); //打印页码 string pagestr = PageIndex + " / " + PageNumber; Font font = new Font("宋体", 12, FontStyle.Regular); g.DrawString(pagestr, font, Brushes.Black, new PointF((PageWidth / 2) - g.MeasureString(pagestr, font).Width, PageHeight - (BottomMargin / 2) - g.MeasureString(pagestr, font).Height)); //打印查询的功能项名称 string temp = dataview.Tag.ToString() + " " + DateTime.Now.ToString("yyyy-MM-dd HH:mm"); g.DrawString(temp, font, Brushes.Black, new PointF(PageWidth - 5 - g.MeasureString(temp, font).Width, PageHeight - 5 - g.MeasureString(temp, font).Height)); return hasMorePage; } } }
