datatoexcel.cs

net代码生成器生成的三层架构项目中涉及的几个组件类库开发源码

using System;
using System.Diagnostics;
using System.Collections;
using System.Data;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Excel;
namespace LTP.Common
{
    /// <summary>
    /// 操作EXCEL导出数据报表的类
    /// 李天平
    /// 2006.4
    /// </summary>
    public class DataToExcel
    {
        public DataToExcel()
        {
        }

        #region 操作EXCEL的一个类(需要Excel.dll支持)

        private int titleColorindex = 15;
        /// <summary>
        /// 标题背景色
        /// </summary>
        public int TitleColorIndex
        {
            set { titleColorindex = value; }
            get { return titleColorindex; }
        }

        private DateTime beforeTime;			//Excel启动之前时间
        private DateTime afterTime;				//Excel启动之后时间

        #region 创建一个Excel示例
        /// <summary>
        /// 创建一个Excel示例
        /// </summary>
        public void CreateExcel()
        {
            Excel.Application excel = new Excel.Application();
            excel.Application.Workbooks.Add(true);
            excel.Cells[1, 1] = "第1行第1列";
            excel.Cells[1, 2] = "第1行第2列";
            excel.Cells[2, 1] = "第2行第1列";
            excel.Cells[2, 2] = "第2行第2列";
            excel.Cells[3, 1] = "第3行第1列";
            excel.Cells[3, 2] = "第3行第2列";

            //保存
            excel.ActiveWorkbook.SaveAs("./tt.xls", XlFileFormat.xlExcel9795, null, null, false, false, Excel.XlSaveAsAccessMode.xlNoChange, null, null, null, null, null);
            //打开显示
            excel.Visible = true;
            //			excel.Quit();
            //			excel=null;            
            //			GC.Collect();//垃圾回收
        }
        #endregion

        #region 将DataTable的数据导出显示为报表
        /// <summary>
        /// 将DataTable的数据导出显示为报表
        /// </summary>
        /// <param name="dt">要导出的数据</param>
        /// <param name="strTitle">导出报表的标题</param>
        /// <param name="FilePath">保存文件的路径</param>
        /// <returns></returns>
        public string OutputExcel(System.Data.DataTable dt, string strTitle, string FilePath)
        {
            beforeTime = DateTime.Now;

            Excel.Application excel;
            Excel._Workbook xBk;
            Excel._Worksheet xSt;

            int rowIndex = 4;
            int colIndex = 1;

            excel = new Excel.ApplicationClass();
            xBk = excel.Workbooks.Add(true);
            xSt = (Excel._Worksheet)xBk.ActiveSheet;

            //取得列标题			
            foreach (DataColumn col in dt.Columns)
            {
                colIndex++;
                excel.Cells[4, colIndex] = col.ColumnName;

                //设置标题格式为居中对齐
                xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).Font.Bold = true;
                xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).HorizontalAlignment = Excel.XlVAlign.xlVAlignCenter;
                xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).Select();
                xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).Interior.ColorIndex = titleColorindex;//19;//设置为浅黄色，共计有56种
            }


            //取得表格中的数据			
            foreach (DataRow row in dt.Rows)
            {
                rowIndex++;
                colIndex = 1;
                foreach (DataColumn col in dt.Columns)
                {
                    colIndex++;
                    if (col.DataType == System.Type.GetType("System.DateTime"))
                    {
                        excel.Cells[rowIndex, colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd");
                        xSt.get_Range(excel.Cells[rowIndex, colIndex], excel.Cells[rowIndex, colIndex]).HorizontalAlignment = Excel.XlVAlign.xlVAlignCenter;//设置日期型的字段格式为居中对齐
                    }
                    else
                        if (col.DataType == System.Type.GetType("System.String"))
                        {
                            excel.Cells[rowIndex, colIndex] = "'" + row[col.ColumnName].ToString();
                            xSt.get_Range(excel.Cells[rowIndex, colIndex], excel.Cells[rowIndex, colIndex]).HorizontalAlignment = Excel.XlVAlign.xlVAlignCenter;//设置字符型的字段格式为居中对齐
                        }
                        else
                        {
                            excel.Cells[rowIndex, colIndex] = row[col.ColumnName].ToString();
                        }
                }
            }

            //加载一个合计行			
            int rowSum = rowIndex + 1;
            int colSum = 2;
            excel.Cells[rowSum, 2] = "合计";
            xSt.get_Range(excel.Cells[rowSum, 2], excel.Cells[rowSum, 2]).HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;
            //设置选中的部分的颜色			
            xSt.get_Range(excel.Cells[rowSum, colSum], excel.Cells[rowSum, colIndex]).Select();
            //xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Interior.ColorIndex =Assistant.GetConfigInt("ColorIndex");// 1;//设置为浅黄色，共计有56种

            //取得整个报表的标题			
            excel.Cells[2, 2] = strTitle;

            //设置整个报表的标题格式			
            xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, 2]).Font.Bold = true;
            xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, 2]).Font.Size = 22;

            //设置报表表格为最适应宽度			
            xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, colIndex]).Select();
            xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, colIndex]).Columns.AutoFit();

            //设置整个报表的标题为跨列居中			
            xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, colIndex]).Select();
            xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, colIndex]).HorizontalAlignment = Excel.XlHAlign.xlHAlignCenterAcrossSelection;

            //绘制边框			
            xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, colIndex]).Borders.LineStyle = 1;
            xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, 2]).Borders[Excel.XlBordersIndex.xlEdgeLeft].Weight = Excel.XlBorderWeight.xlThick;//设置左边线加粗
            xSt.get_Range(excel.Cells[4, 2], excel.Cells[4, colIndex]).Borders[Excel.XlBordersIndex.xlEdgeTop].Weight = Excel.XlBorderWeight.xlThick;//设置上边线加粗
            xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[rowSum, colIndex]).Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlThick;//设置右边线加粗
            xSt.get_Range(excel.Cells[rowSum, 2], excel.Cells[rowSum, colIndex]).Borders[Excel.XlBordersIndex.xlEdgeBottom].Weight = Excel.XlBorderWeight.xlThick;//设置下边线加粗



            afterTime = DateTime.Now;

            //显示效果			
            //excel.Visible=true;			
            //excel.Sheets[0] = "sss";

            ClearFile(FilePath);
            string filename = DateTime.Now.ToString("yyyyMMddHHmmssff") + ".xls";
            excel.ActiveWorkbook.SaveAs(FilePath + filename, Excel.XlFileFormat.xlExcel9795, null, null, false, false, Excel.XlSaveAsAccessMode.xlNoChange, null, null, null, null, null);

            //wkbNew.SaveAs strBookName;
            //excel.Save(strExcelFileName);

            #region  结束Excel进程

            //需要对Excel的DCOM对象进行配置:dcomcnfg


            //excel.Quit();
            //excel=null;            

            xBk.Close(null, null, null);
            excel.Workbooks.Close();
            excel.Quit();


            //注意：这里用到的所有Excel对象都要执行这个操作，否则结束不了Excel进程
            //			if(rng != null)
            //			{
            //				System.Runtime.InteropServices.Marshal.ReleaseComObject(rng);
            //				rng = null;
            //			}
            //			if(tb != null)
            //			{
            //				System.Runtime.InteropServices.Marshal.ReleaseComObject(tb);
            //				tb = null;
            //			}
            if (xSt != null)
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(xSt);
                xSt = null;
            }
            if (xBk != null)
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(xBk);
                xBk = null;
            }
            if (excel != null)
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
                excel = null;
            }
            GC.Collect();//垃圾回收
            #endregion