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using System;using System.Data;using System.IO;using System.Runtime.InteropServices;using System.Threading;using System.Windows.Forms;using Microsoft.Office.Core;using Excel = Microsoft.Office.Interop.Excel;namespace WindowsFormsApplication1{ public partial class Form1 : Form { private bool isStartPrint = false; public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { //string OriginalPath = Path.GetDirectoryName(Application.ExecutablePath) + "\\IMS.accdb"; ////初始化数据库 //DataBase.OleDbObject.InitDatabase(OriginalPath); //DataBase.OleDbObject.OpenDb(); //int k=DataBase.OleDbObject.Select("select * from ElementInventory").Rows.Count; //初始化要写入Excel的数据 DataTable dt = new DataTable(); for (int i = 0; i < 11; i++) { DataColumn dc = new DataColumn(); dc.ColumnName = "name" + i; dc.DataType = typeof(string); dt.Columns.Add(dc); } for (int i = 0; i < 30; i++) { DataRow dr = dt.NewRow(); if (i % 2 == 0) { dr[0] = "测试用例" + i + "号，开始测试是否自动换行，以及页面高度自适应。"; } else { dr[0] = "测试用例" + i + "号"; } for (int j = 1; j < 11; j++) { dr[j] = j; } dt.Rows.Add(dr); } if (!isStartPrint) { Thread th = new Thread(delegate () { DataTabletoExcel(dt, "测试.xlsx"); }); th.Start(); isStartPrint = true; } else { MessageBox.Show("打印程序已启用，请稍后……", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } //DataTabletoExcel(dt, "测试.xlsx"); } public void DataTabletoExcel(System.Data.DataTable dtTemp, string strFileName) { int rowNum = dtTemp.Rows.Count; //先得到dtTemp的行数 int columnNum = dtTemp.Columns.Count; //列数 Excel.Application ExcelApp = new Excel.Application(); //声明一个应用程序类实例 //ExcelApp.DefaultFilePath = ""; //默认文件路径导出excel的路径还是在参数strFileName里设置 //ExcelApp.DisplayAlerts = true; //ExcelApp.SheetsInNewWorkbook = 1;///返回或设置 Microsoft Excel 自动插入到新工作簿中的工作表数目。 Excel.Workbook worksBook = ExcelApp.Workbooks.Add(); //创建一个新工作簿 Excel.Worksheet workSheet = (Excel.Worksheet)worksBook.Worksheets[1]; //在工作簿中得到sheet。 if (workSheet == null) { System.Diagnostics.Debug.WriteLine("ERROR: worksheet == null"); return; } workSheet.Name = "测试Sheet1"; //工作表的名称 workSheet.Cells.WrapText = true; //设置所有列的文本自动换行 workSheet.Cells.EntireRow.AutoFit(); //设置所有列自动调整行高 #region 绘制列 ///自定义方法，向sheet中绘制列 RangeMark(workSheet, "A1", "A2", "合并竖列1"); RangeMark(workSheet, "B1", "B2", "合并竖列2"); RangeMark(workSheet, "C1", "C2", "合并竖列3"); RangeMark(workSheet, "D1", "D2", "合并竖列4"); RangeMark(workSheet, "E1", "E2", "合并竖列5"); RangeMark(workSheet, "F1", "H1", "合并横行1"); RangeMark(workSheet, "F2", "F2", "合并横行1.1"); RangeMark(workSheet, "G2", "G2", "合并横行1.2"); RangeMark(workSheet, "H2", "H2", "合并横行1.3"); RangeMark(workSheet, "I1", "K1", "合并横行2"); RangeMark(workSheet, "I2", "J2", "合并横行2.1"); RangeMark(workSheet, "K2", "K2", "合并横行2.2"); #endregion //将DataTable中的数据导入Excel中 for (int i = 0; i < rowNum; i++) { for (int j = 0; j < columnNum; j++) { workSheet.Cells[i + 3, j + 1] = dtTemp.Rows[i][j].ToString(); //文本 } } ///保存路径 string filePath = @"C:\Users\Admin\Desktop\" + strFileName; if (File.Exists(filePath)) { try { File.Delete(filePath); } catch (Exception) { } } ExcelApp.Visible = true; //------------------------打印页面相关设置-------------------------------- workSheet.PageSetup.PaperSize = Excel.XlPaperSize.xlPaperA4;//纸张大小 workSheet.PageSetup.Orientation = Excel.XlPageOrientation.xlLandscape;//页面横向 //workSheet.PageSetup.Zoom = 75; //打印时页面设置,缩放比例百分之几 workSheet.PageSetup.Zoom = false; //打印时页面设置,必须设置为false,页高,页宽才有效 workSheet.PageSetup.FitToPagesWide = 1; //设置页面缩放的页宽为1页宽 workSheet.PageSetup.FitToPagesTall = false; //设置页面缩放的页高自动 workSheet.PageSetup.LeftHeader = "Nigel";//页面左上边的标志 workSheet.PageSetup.CenterFooter = "第 &P 页，共 &N 页";//页面下标 workSheet.PageSetup.PrintGridlines = true; //打印单元格网线 workSheet.PageSetup.TopMargin = 1.5 / 0.035; //上边距为2cm（转换为in） workSheet.PageSetup.BottomMargin = 1.5 / 0.035; //下边距为1.5cm workSheet.PageSetup.LeftMargin = 2 / 0.035; //左边距为2cm workSheet.PageSetup.RightMargin = 2 / 0.035; //右边距为2cm workSheet.PageSetup.CenterHorizontally = true; //文字水平居中 //------------------------打印页面设置结束-------------------------------- ///http://blog.csdn.net/wanmingtom/article/details/6125599 worksBook.PrintPreview(); //打印预览 //worksBook.PrintOutEx(); //直接打印 //worksBook.Close(); //关闭工作空间 //ExcelApp.Quit(); //退出程序 //workSheet.SaveAs(filePath); //另存表 KillProcess(ExcelApp); //杀掉生成的进程 isStartPrint = false; //打印完毕 GC.Collect(); //垃圾回收机制 } /// <summary> /// 引用Windows句柄，获取程序PID /// </summary> /// <param name="Hwnd"></param> /// <param name="PID"></param> /// <returns></returns> [DllImport("User32.dll")] public static extern int GetWindowThreadProcessId(IntPtr Hwnd, out int PID); /// <summary> /// 杀掉生成的进程 /// </summary> /// <param name="AppObject">进程程对象</param> private static void KillProcess(Excel.Application AppObject) { int Pid = 0; IntPtr Hwnd = new IntPtr(AppObject.Hwnd); System.Diagnostics.Process p = null; try { GetWindowThreadProcessId(Hwnd, out Pid); p = System.Diagnostics.Process.GetProcessById(Pid); if (p != null) { p.Kill(); p.Dispose(); } } catch (Exception ex) { System.Diagnostics.Debug.WriteLine("进程关闭失败！异常信息：" + ex); } } /// <summary> /// 创建表头单元格，包括合并单元格 /// </summary> /// <param name="workSheet">工作表</param> /// <param name="startCell">单元格起始格编号</param> /// <param name="endCell">单元格结束编号</param> /// <param name="strText">单元格名称</param> private static bool RangeMark(Excel.Worksheet workSheet, string startCell, string endCell, string strText) { //创建一个区域对象。第一个参数是开始格子号，第二个参数是终止格子号。比如选中A1——D3这个区域。 Excel.Range range = (Excel.Range)workSheet.get_Range(startCell, endCell); if (range == null) { System.Diagnostics.Debug.WriteLine("ERROR: range == null"); return false; } range.Merge(0); //合并方法，0的时候直接合并为一个单元格 range.Font.Size = 16; //字体大小 range.Font.Name = "黑体"; //字体 range.WrapText = true; //文本自动换行 range.EntireRow.AutoFit(); //自动调整行高 //range.RowHeight = 20; //range.EntireColumn.AutoFit(); //自动调整列宽 range.ColumnWidth = 15; range.HorizontalAlignment = XlVAlign.xlVAlignCenter; //横向居中 range.Value = strText; //合并单元格之后，设置其中的文本 range.Interior.ColorIndex = 20; //填充颜色 range.Cells.Borders.LineStyle = 1; //设置单元格边框的粗细 return true; } }} |
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原文链接：https://www.cnblogs.com/pilgrim/p/6013207.html
