强大的Excel文件的导入导出类

using System;

using System.Data;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

 

using System.Data.OleDb;

using Microsoft.Office.Interop.Excel;

using System.Reflection; // For Missing.Value and BindingFlags

using System.Runtime.InteropServices; // For COMException

/// <summary>

///Excel 的摘要说明

/// </summary>

namespace harry

{

    public class Excel

    {

        #region 读取Excel文件转换成DataTable

 

        /// <summary>

        /// 读取Excel文件转换成DataTable

        /// </summary>

        /// <param name="excelPath">Excel文件路径</param>

        /// <param name="sheetName"></param>

        /// <returns></returns>

        public static System.Data.DataTable Import_Sheet(string excelPath, string sheetName) { return Import_Sql(excelPath, "select * from [" + sheetName + "$]"); }

 

        /// <summary>

        /// 读取Excel文件转换成DataTable

        /// </summary>

        /// <param name="excelPath">Excel文件路径</param>

        /// <param name="sql">Excel内查询语句</param>

        /// <returns></returns>

        public static System.Data.DataTable Import_Sql(string excelPath, string sql)

        {

            //string 2003 = "Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;data source=" + filepath;

            //string 2007 = "Provider=Microsoft.ACE.OLEDB.12.0;Extended Properties='Excel 12.0;HDR=YES';data source=" + fPath;//读EXCEL2003/excel2007

            OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties='Excel 8.0;HDR=YES;HDR=1;';data source=" + excelPath);

            OleDbDataAdapter odda = new OleDbDataAdapter(sql, conn);

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

            try

            {

                conn.Open();

                odda.Fill(dt);

            }

            catch (Exception ex) { throw ex; }

            finally

            {

                conn.Close();

                conn.Dispose();

                odda.Dispose();

            }

            return dt;

        }

 

        #endregion

 

        #region 输出Excel文件

 

        #region 使用office组件输出

 

        public static void Export_Office(System.Data.DataTable dt) { Export_Office(dt, "", new Model.harry.ExcelInfo()); }

 

        public static void Export_Office(System.Data.DataTable dt, Model.harry.ExcelInfo model) { Export_Office(dt, "", model); }

 

        public static void Export_Office(System.Data.DataTable dt, string savePath) { Export_Office(dt, savePath, new Model.harry.ExcelInfo()); }

 

        /// <summary>

        /// 输出Excel文件

        /// </summary>

        /// <param name="dt">数据源</param>

        /// <param name="savePath">储存路径</param>

        /// <param name="ExcelInfo">Excel格式化信息对象</param>

        private static void Export_Office(System.Data.DataTable dt, string savePath, Model.harry.ExcelInfo model)

        {

            if (dt.Rows.Count > 0)

            {

                Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();

                Microsoft.Office.Interop.Excel._Worksheet format = (Microsoft.Office.Interop.Excel._Worksheet)excel.Application.Workbooks.Add(true).ActiveSheet;

 

                //设置行和列的索引

                int rowIndex = 1, colIndex = 0;

                //添加列名

                foreach (DataColumn col in dt.Columns)

                {

                    colIndex++;

                    excel.Cells[1, colIndex] = col.ColumnName;

                }

                //添加数据

                foreach (DataRow row in dt.Rows)

                {

                    rowIndex++;

                    colIndex = 0;

                    foreach (DataColumn col in dt.Columns)

                    {

                        colIndex++;

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

                    }

                }

                if (model != null)

                {

                    //设置标题是否为粗体

                    format.get_Range(excel.Cells[1, 1], excel.Cells[1, colIndex]).Font.Bold = model.TitleBold;

 

                    Range range = format.get_Range(excel.Cells[1, 1], excel.Cells[rowIndex, colIndex]);

                    //设置字体大小

                    range.Font.Size = model.FontSize;

                    //设置列宽

                    if (model.Width == Model.harry.ExcelInfo.WidthType.auto) { range.Columns.AutoFit(); }

                    else if (model.Width == Model.harry.ExcelInfo.WidthType.size) { range.ColumnWidth = model.WidthSize; }

                    //设置对齐格式

                    if (model.Align == Model.harry.ExcelInfo.AlignType.left) { range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignLeft; }

                    else if (model.Align == Model.harry.ExcelInfo.AlignType.center) { range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter; }

                    else if (model.Align == Model.harry.ExcelInfo.AlignType.right) { range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignRight; }

                    else { }

 

                    if (model.Valign == Model.harry.ExcelInfo.ValignType.top) { range.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignTop; }

                    else if (model.Valign == Model.harry.ExcelInfo.ValignType.middle) { range.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter; }

                    else if (model.Valign == Model.harry.ExcelInfo.ValignType.bottom) { range.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignBottom; }

                    else { }

                }

 

                //不可见，即后台处理

                excel.Visible = false;

                //设置禁止弹出保存的询问提示框

                excel.DisplayAlerts = false;

                ////设置禁止弹出覆盖的询问提示框

                //excel.AlertBeforeOverwriting = false;

 

                try

                {

                    if (savePath != "") { excel.ActiveWorkbook.SaveCopyAs(savePath); }

                    else

                    {

                        excel.Save(AppDomain.CurrentDomain.BaseDirectory + "bak.xls");

                        if (System.IO.File.Exists(AppDomain.CurrentDomain.BaseDirectory + "bak.xls")) System.IO.File.Delete(AppDomain.CurrentDomain.BaseDirectory + "bak.xls");

                    }

                }

                catch { }

 

                finally

                {

                    excel.Application.Workbooks.Close();

                    excel.Application.Quit();

                    excel.Quit();

                    //释放使用的Excel对象

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

                    GC.Collect();

                    KillExcel();

                }

            }

        }

 

        //删除执行过程中未释放的Excel线程

        private static void KillExcel()

        {

            System.Diagnostics.Process[] excelProcesses = System.Diagnostics.Process.GetProcessesByName("EXCEL");

            DateTime startTime = new DateTime();

 

            int processId = 0;

            for (int i = 0; i < excelProcesses.Length; i++)

            {

                if (startTime < excelProcesses[i].StartTime)

                {

                    startTime = excelProcesses[i].StartTime;

                    processId = i;

                }

            }

            if (excelProcesses[processId].HasExited == false) { excelProcesses[processId].Kill(); }

        }

 

        #endregion

 

        #region 使用DataGrid输出

 

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataGrid">DataGrid</param>

        public static void Export_DataGrid(DataGrid dg) { Export_DataGrid(dg, null, null, null, false); }

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataGrid">DataGrid</param>

        /// <param name="fileName">文件名称</param>

        public static void Export_DataGrid(DataGrid dg, string fileName) { Export_DataGrid(dg, null, fileName, null, false); }

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataGrid">DataGrid</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        public static void Export_DataGrid(DataGrid dg, string fileName, string formatCellIndex) { Export_DataGrid(dg, null, fileName, formatCellIndex, false); }

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataGrid">DataGrid</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        /// <param name="isWrite">是否直接输出到前台</param>

        /// <returns>Excel文件内容</returns>

        public static string Export_DataGrid(DataGrid dg, string fileName, string formatCellIndex, bool isWrite) { return Export_DataGrid(dg, null, fileName, formatCellIndex, isWrite); }

 

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        public static void Export_DataGrid(System.Data.DataTable dt) { Export_DataGrid(null, dt, null, null, false); }

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        /// <param name="fileName">文件名称</param>

        public static void Export_DataGrid(System.Data.DataTable dt, string fileName) { Export_DataGrid(null, dt, fileName, null, false); }

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        public static void Export_DataGrid(System.Data.DataTable dt, string fileName, string formatCellIndex) { Export_DataGrid(null, dt, fileName, formatCellIndex, false); }

        /// <summary>

        /// 使用DataGrid输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        /// <param name="isWrite">是否直接输出到前台</param>

        /// <returns>Excel文件内容</returns>

        public static string Export_DataGrid(System.Data.DataTable dt, string fileName, string formatCellIndex, bool isWrite) { return Export_DataGrid(null, dt, fileName, formatCellIndex, isWrite); }

 

        private static string Export_DataGrid(DataGrid dg, System.Data.DataTable dt, string fileName, string formatCellIndex, bool isWrite)

        {

            if (dg == null)

            {

                dg = new DataGrid();

                dg.DataSource = dt;

                dg.DataBind();

            }

            foreach (DataGridItem dgi in dg.Items)

            {

                for (int j = 0; j < dgi.Cells.Count; j++)

                {

                    if (formatCellIndex != null && formatCellIndex != "" && formatCellIndex.Contains("$" + j + "$")) dgi.Cells[j].Attributes.Add("style", "mso-number-format:'@';");

                }

            }

            if (fileName == null || fileName == "") { fileName = "Excel.xls"; }

 

            System.IO.StringWriter oStringWriter = new System.IO.StringWriter();

            dg.RenderControl(new System.Web.UI.HtmlTextWriter(oStringWriter));

 

            if (isWrite) { return oStringWriter.ToString(); }

            else

            {

                //this.EnableViewState = false;

                HttpResponse response = System.Web.HttpContext.Current.Response;

                response.Clear();

                response.Buffer = true;

                response.ContentType = "application/vnd.ms-excel";

                response.Charset = "gb2312";

                response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");

                response.AppendHeader("content-disposition", "attachment;fileName=\"" + fileName + "\"");

 

                response.Write(oStringWriter.ToString());

                response.End();

                return "";

            }

        }

 

        #endregion

 

        #region 使用GridView输出

 

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="GridView">GridView</param>

        public static void Export_GridView(GridView gv) { Export_GridView(gv, null, null, null, false); }

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="GridView">GridView</param>

        /// <param name="fileName">文件名称</param>

        public static void Export_GridView(GridView gv, string fileName) { Export_GridView(gv, null, fileName, null, false); }

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="GridView">GridView</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        public static void Export_GridView(GridView gv, string fileName, string formatCellIndex) { Export_GridView(gv, null, fileName, formatCellIndex, false); }

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="GridView">GridView</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        /// <param name="isWrite">是否直接输出到前台</param>

        /// <returns>Excel文件内容</returns>

        public static string Export_GridView(GridView gv, string fileName, string formatCellIndex, bool isWrite) { return Export_GridView(gv, null, fileName, formatCellIndex, isWrite); }

 

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        public static void Export_GridView(System.Data.DataTable dt) { Export_GridView(null, dt, null, null, false); }

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        /// <param name="fileName">文件名称</param>

        public static void Export_GridView(System.Data.DataTable dt, string fileName) { Export_GridView(null, dt, fileName, null, false); }

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        public static void Export_GridView(System.Data.DataTable dt, string fileName, string formatCellIndex) { Export_GridView(null, dt, fileName, formatCellIndex, false); }

        /// <summary>

        /// 使用GridView输出Excel文件

        /// </summary>

        /// <param name="DataTable">DataTable数据源</param>

        /// <param name="fileName">文件名称</param>

        /// <param name="formatCellIndex">需要格式化的列集合，例如"$1$2$"为1,2列格式化为字符串</param>

        /// <param name="isWrite">是否直接输出到前台</param>

        /// <returns>Excel文件内容</returns>

        public static string Export_GridView(System.Data.DataTable dt, string fileName, string formatCellIndex, bool isWrite) { return Export_GridView(null, dt, fileName, formatCellIndex, isWrite); }

 

        private static string Export_GridView(GridView gv, System.Data.DataTable dt, string fileName, string formatCellIndex, bool isWrite)

        {

            if (gv == null)

            {

                gv = new GridView();

                gv.DataSource = dt;

                gv.DataBind();

            }

            foreach (GridViewRow gvr in gv.Rows)

            {

                for (int j = 0; j < gvr.Cells.Count; j++)

                {

                    if (formatCellIndex != null && formatCellIndex != "" && formatCellIndex.Contains("$" + j + "$")) gvr.Cells[j].Attributes.Add("style", "mso-number-format:'@';");

                }

            }

            if (fileName == null || fileName == "") { fileName = "Excel.xls"; }

 

            System.IO.StringWriter oStringWriter = new System.IO.StringWriter();

            gv.RenderControl(new System.Web.UI.HtmlTextWriter(oStringWriter));

 

            if (isWrite) { return oStringWriter.ToString(); }

            else

            {

                //this.EnableViewState = false;

                HttpResponse response = System.Web.HttpContext.Current.Response;

                response.Clear();

                response.Buffer = true;

                response.ContentType = "application/vnd.ms-excel";

                response.Charset = "gb2312";

                response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");

                response.AppendHeader("content-disposition", "attachment;fileName=\"" + fileName + "\"");

 

                response.Write(oStringWriter.ToString());

                response.End();

                return "";

            }

        }

 

        #endregion

 

        #endregion

    }

}