原文地址：https://www.cnblogs.com/pilgrim/p/6013207.html
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";
////初始化數據庫
//DataBase.OleDbObject.InitDatabase(OriginalPath);
//DataBase.OleDbObject.OpenDb();
//int k=DataBase.OleDbObject.Select("select * from ElementInventory").Rows.Count;
//初始化要寫入Excel的數據
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] = "測試用例" + i + "號，開始測試是否自動換行，以及頁面高度自適應。";
}
else
{
dr[0] = "測試用例" + i + "號";
}
for (int j = 1; j < 11; j++)
{
dr[j] = j;
}
dt.Rows.Add(dr);
}
if (!isStartPrint)
{
Thread th = new Thread(delegate ()
{
DataTabletoExcel(dt, "測試.xlsx");
});
th.Start();
isStartPrint = true;
}
else
{
MessageBox.Show("打印程序已啓用，請稍後……", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
//DataTabletoExcel(dt, "測試.xlsx");
}
public void DataTabletoExcel(System.Data.DataTable dtTemp, string strFileName)
{
int rowNum = dtTemp.Rows.Count; //先得到dtTemp的行數
int columnNum = dtTemp.Columns.Count; //列數
Excel.Application ExcelApp = new Excel.Application(); //聲明一個應用程序類實例
//ExcelApp.DefaultFilePath = ""; //默認文件路徑導出excel的路徑還是在參數strFileName裏設置
//ExcelApp.DisplayAlerts = true;
//ExcelApp.SheetsInNewWorkbook = 1;///返回或設置 Microsoft Excel 自動插入到新工作簿中的工作表數目。
Excel.Workbook worksBook = ExcelApp.Workbooks.Add(); //創建一個新工作簿
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 = "測試Sheet1"; //工作表的名稱
workSheet.Cells.WrapText = true; //設置所有列的文本自動換行
workSheet.Cells.EntireRow.AutoFit(); //設置所有列自動調整行高
#region 繪製列
///自定義方法，向sheet中繪製列
RangeMark(workSheet, "A1", "A2", "合併豎列1");
RangeMark(workSheet, "B1", "B2", "合併豎列2");
RangeMark(workSheet, "C1", "C2", "合併豎列3");
RangeMark(workSheet, "D1", "D2", "合併豎列4");
RangeMark(workSheet, "E1", "E2", "合併豎列5");
RangeMark(workSheet, "F1", "H1", "合併橫行1");
RangeMark(workSheet, "F2", "F2", "合併橫行1.1");
RangeMark(workSheet, "G2", "G2", "合併橫行1.2");
RangeMark(workSheet, "H2", "H2", "合併橫行1.3");
RangeMark(workSheet, "I1", "K1", "合併橫行2");
RangeMark(workSheet, "I2", "J2", "合併橫行2.1");
RangeMark(workSheet, "K2", "K2", "合併橫行2.2");
#endregion
//將DataTable中的數據導入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
}
}
///保存路徑
string filePath = @"C:\Users\Admin\Desktop\" + strFileName;
if (File.Exists(filePath))
{
try
{
File.Delete(filePath);
}
catch (Exception)
{
}
}
ExcelApp.Visible = true;
//------------------------打印頁面相關設置--------------------------------
workSheet.PageSetup.PaperSize = Excel.XlPaperSize.xlPaperA4;//紙張大小
workSheet.PageSetup.Orientation = Excel.XlPageOrientation.xlLandscape;//頁面橫向
//workSheet.PageSetup.Zoom = 75; //打印時頁面設置,縮放比例百分之幾
workSheet.PageSetup.Zoom = false; //打印時頁面設置,必須設置爲false,頁高,頁寬纔有效
workSheet.PageSetup.FitToPagesWide = 1; //設置頁面縮放的頁寬爲1頁寬
workSheet.PageSetup.FitToPagesTall = false; //設置頁面縮放的頁高自動
workSheet.PageSetup.LeftHeader = "Nigel";//頁面左上邊的標誌
workSheet.PageSetup.CenterFooter = "第 &P 頁，共 &N 頁";//頁面下標
workSheet.PageSetup.PrintGridlines = true; //打印單元格網線
workSheet.PageSetup.TopMargin = 1.5 / 0.035; //上邊距爲2cm（轉換爲in）
workSheet.PageSetup.BottomMargin = 1.5 / 0.035; //下邊距爲1.5cm
workSheet.PageSetup.LeftMargin = 2 / 0.035; //左邊距爲2cm
workSheet.PageSetup.RightMargin = 2 / 0.035; //右邊距爲2cm
workSheet.PageSetup.CenterHorizontally = true; //文字水平居中
//------------------------打印頁面設置結束--------------------------------
///http://blog.csdn.net/wanmingtom/article/details/6125599
worksBook.PrintPreview(); //打印預覽
//worksBook.PrintOutEx(); //直接打印
//worksBook.Close(); //關閉工作空間
//ExcelApp.Quit(); //退出程序
//workSheet.SaveAs(filePath); //另存表
KillProcess(ExcelApp); //殺掉生成的進程
isStartPrint = false; //打印完畢
GC.Collect(); //垃圾回收機制
}
/// <summary>
/// 引用Windows句柄，獲取程序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>
/// 殺掉生成的進程
/// </summary>
/// <param name="AppObject">進程程對象</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("進程關閉失敗！異常信息：" + ex);
}
}
/// <summary>
/// 創建表頭單元格，包括合併單元格
/// </summary>
/// <param name="workSheet">工作表</param>
/// <param name="startCell">單元格起始格編號</param>
/// <param name="endCell">單元格結束編號</param>
/// <param name="strText">單元格名稱</param>
private static bool RangeMark(Excel.Worksheet workSheet, string startCell, string endCell, string strText)
{
//創建一個區域對象。第一個參數是開始格子號，第二個參數是終止格子號。比如選中A1——D3這個區域。
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); //合併方法，0的時候直接合併爲一個單元格
range.Font.Size = 16; //字體大小
range.Font.Name = "黑體"; //字體
range.WrapText = true; //文本自動換行
range.EntireRow.AutoFit(); //自動調整行高
//range.RowHeight = 20;
//range.EntireColumn.AutoFit(); //自動調整列寬
range.ColumnWidth = 15;
range.HorizontalAlignment = XlVAlign.xlVAlignCenter; //橫向居中
range.Value = strText; //合併單元格之後，設置其中的文本
range.Interior.ColorIndex = 20; //填充顏色
range.Cells.Borders.LineStyle = 1; //設置單元格邊框的粗細
return true;
}
}
}