c# excel sheep 导出

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Data;

using System.Reflection;

using System.Collections;

using Microsoft.Office.Interop.Excel;

namespace Common

{

    public class ExcelExportHelper

    {

        /// <summary> 

        /// 集合装换DataTable

        /// </summary> 

        /// <param name="list">集合</param> 

        /// <returns></returns> 

        public static System.Data.DataTable ToDataSet(IList p_List)

        {

            System.Data.DataTable _DataTable = new System.Data.DataTable();

            if (p_List.Count > 0)

            {

                PropertyInfo[] propertys = p_List[0].GetType().GetProperties();

                foreach (PropertyInfo pi in propertys)

                {

                    _DataTable.Columns.Add(pi.Name, pi.PropertyType);

                }

                for (int i = 0; i < p_List.Count; i++)

                {

                    ArrayList tempList = new ArrayList();

                    foreach (PropertyInfo pi in propertys)

                    {

                        object obj = pi.GetValue(p_List[i], null);

                        tempList.Add(obj);

                    }

                    object[] array = tempList.ToArray();

                    _DataTable.LoadDataRow(array, true);

                }

            }

            return _DataTable;

        }

        /// <summary>

        /// 分Sheet导出Excel文件

        /// </summary>

        /// <param name="dv">需导出的DataView</param>

        /// <returns>导出文件的路径</returns>

        /// <summary>

        /// 分Sheet导出Excel文件

        /// </summary>

        /// <param name="ds">需要导出的数据集 可包含多个Table</param>

        /// <param name="fileName">导出的文件名(不能有横线-,也不能有空格)</param>

        /// <returns></returns>

        public static void DataView2ExcelBySheet(string[] SheetName, DataSet ds, string fileName)

        {

            GC.Collect();//垃圾回收

            Application excel;

            _Workbook xBk;

            _Worksheet xSt = null;

            excel = new ApplicationClass();

            xBk = excel.Workbooks.Add(true);

            //定义循环中要使用的变量

            int rowIndex = 0;

            int colIndex = 0;

            int sheetCount = 1;

            //对全部Sheet进行操作

            foreach (System.Data.DataTable dt in ds.Tables)

            {

                //初始化Sheet中的变量

                rowIndex = 1;

                colIndex = 1;

                //创建一个Sheet

                if (null == xSt)

                {

                    xSt = (_Worksheet)xBk.Worksheets.Add(Type.Missing, Type.Missing, 1, Type.Missing);

                }

                else

                {

                    xSt = (_Worksheet)xBk.Worksheets.Add(Type.Missing, xSt, 1, Type.Missing);

                }

                //设置Sheet的名称

                if (SheetName.Length > 0)

                {

                    xSt.Name = SheetName[sheetCount - 1];

                }

                //取得标题

                foreach (DataColumn col in dt.Columns)

                {

                    //设置标题格式

                    xSt.get_Range(excel.Cells[rowIndex, colIndex], excel.Cells[rowIndex, colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter; //设置标题居中对齐

                    xSt.get_Range(excel.Cells[rowIndex, colIndex], excel.Cells[rowIndex, colIndex]).Font.Bold = true;//设置标题为粗体

                    //填值，并进行下一列

                    excel.Cells[rowIndex, colIndex++] = col.ColumnName;

                }

                //取得表格中数量

                int drvIndex;

                for (drvIndex = 0; drvIndex <= dt.Rows.Count - 1; drvIndex++)

                {

                    DataRow row = dt.Rows[drvIndex];

                    //新起一行，当前单元格移至行首

                    rowIndex++;

                    colIndex = 1;

                    foreach (DataColumn col in dt.Columns)

                    {

                        if (col.DataType == System.Type.GetType("System.DateTime"))

                        {

                            excel.Cells[rowIndex, colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd");

                        }

                        else if (col.DataType == System.Type.GetType("System.String"))

                        {

                            if (row[col.ColumnName].ToString().Contains("http"))

                            {

                                excel.Cells[rowIndex, colIndex] = row[col.ColumnName].ToString();

                                Range tempRange = xSt.get_Range(xSt.Cells[rowIndex, colIndex], excel.Cells[rowIndex, colIndex]);

                                string strHyperlinks = row[col.ColumnName].ToString();

                                xSt.Hyperlinks.Add(tempRange, strHyperlinks, Missing.Value, Missing.Value, Missing.Value);

                            }

                            else

                            {

                                excel.Cells[rowIndex, colIndex] = "'" + row[col.ColumnName].ToString();

                            }

                        }

                        else

                        {

                            excel.Cells[rowIndex, colIndex] = row[col.ColumnName].ToString();

                        }

                        colIndex++;

                    }

                }

                //使用最佳宽度

                Range allDataWithTitleRange = xSt.get_Range(excel.Cells[1, 1], excel.Cells[rowIndex, colIndex - 1]);

                allDataWithTitleRange.Select();

                allDataWithTitleRange.Columns.AutoFit();

                allDataWithTitleRange.Borders.LineStyle = 1;//将导出Excel加上边框

                sheetCount++;

            }

            //设置导出文件在服务器上的文件夹

            string exportDir = "~/ExcelFile/";//注意:该文件夹您须事先在服务器上建好才行

            string strPath = System.IO.Path.Combine(exportDir, fileName);

            //设置文件在服务器上的路径

            string absFileName = HttpContext.Current.Server.MapPath(exportDir) + fileName;

            xBk.SaveCopyAs(absFileName);

            xBk.Close(false, null, null);

            excel.Quit();

            System.Runtime.InteropServices.Marshal.ReleaseComObject(xBk);

            System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);

            System.Runtime.InteropServices.Marshal.ReleaseComObject(xSt);

            xBk = null;

            excel = null;

            xSt = null;

            GC.Collect();

            HttpResponse resp;

            resp = System.Web.HttpContext.Current.Response;

            resp.Charset = "GB2312";

            resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

            resp.AppendHeader("Content-Disposition", ("attachment;filename=" + fileName));

            resp.WriteFile(absFileName, false);

            resp.End();



        }

    }

}

------------------------------

/// <summary>

        /// 文件查询页导出功能

        /// </summary>

        public void SelectDoc_Export2(string data)

        {

            var input = data.DeserializeObject<StructSelectDoc>();

            using (var context = DOCDBHelper.DataContext)

            {

                var results = context.Usp_DOC_SelectDoc_Export(input.docNo, input.docName, input.docFlag,

                    input.docCatagoryID, input.docSenderName, input.docSenderDep, input.docRecvDepName,

                    input.createDate1, input.createDate2);

                List<Usp_DOC_SelectDoc_ExportResult1> revList = results.GetResult<Usp_DOC_SelectDoc_ExportResult1>().ToList();

                List<Usp_DOC_SelectDoc_ExportResult2> sendList = results.GetResult<Usp_DOC_SelectDoc_ExportResult2>().ToList();

                DataSet ds = new DataSet();

                if (revList != null && revList.Count > 0)

                {

                    ds.Tables.Add(CommonUtil.ListToDataTable(revList));

                }

                if (sendList != null && sendList.Count > 0)

                {

                    ds.Tables.Add(CommonUtil.ListToDataTable(sendList));

                }

                if (ds.Tables.Count > 0)

                {

                    string fileName = "DocExport.csv";

                    string[] sheetName = new string[] { "收文", "发文" };

                    ExcelExportHelper.DataView2ExcelBySheet(sheetName, ds, fileName);

                }

            }

        }