Excel2003，2007，2010，2013导入导出sqlserver

添加Microsoft.Office.Interop.Excel引用。

ExcelIO类：

using System;
using System.Data;
using System.Data.OleDb;
//using System.Collections.Generic;
//using System.Text;
using Excel = Microsoft.Office.Interop.Excel;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Reflection;
using System.Collections;

namespace com.Common.Utility
{
    ///
    //Purpose：Excel文件导入导出,需引用Microsoft Excel 11.0 Object Library 
    //Author: Dangmy 
    //Date: 2007-03-09
    //Version: 1.0
    /// 
    public class ExcelIO
    {
        private int _ReturnStatus;
        private string _ReturnMessage;

        public ExcelIO()
        {
        }

        /// 

        /// 执行返回状态
        /// 
        public int ReturnStatus
        {
            get { return _ReturnStatus; }
        }

        /// 

        /// 执行返回信息
        /// 
        public string ReturnMessage
        {
            get { return _ReturnMessage; }
        }

        /// 

        /// 导入EXCEL文件到DataSet
        /// 
        /// Excel全路径文件名
        /// 导入成功的DataSet
        public DataSet SubImportExcel(string fileName)
        {
            //判断是否安装EXCEL
            Excel.Application xlApp = new Excel.Application();
            if (xlApp == null)
            {
                _ReturnStatus = -1;
                _ReturnMessage = "无法创建Excel对象，可能您的计算机未安装Excel";
                return null;
            }

            //判断文件是否被其他进程使用            
            Excel.Workbook workbook;
            try
            {
                workbook = xlApp.Workbooks.Open(fileName, 0, false, 5, "", "", false, Excel.XlPlatform.xlWindows, "", true, false, 0, true, 1, 0);
            }
            catch
            {
                _ReturnStatus = -1;
                _ReturnMessage = "Excel文件处于打开状态，请保存关闭";
                return null;
            }

            //获得所有Sheet名称
            int n = workbook.Worksheets.Count;
            string[] SheetSet = new string[n];
            //System.Collections.ArrayList al = new System.Collections.ArrayList();
            for (int i = 1; i <= n; i++)
            {
                SheetSet[i - 1] = ((Excel.Worksheet)workbook.Worksheets[i]).Name;
            }

            //释放Excel相关对象
            workbook.Close(null, null, null);
            xlApp.Quit();
            if (workbook != null)
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
                workbook = null;
            }
            if (xlApp != null)
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);
                xlApp = null;
            }
            GC.Collect();

            string strEName = fileName.Substring(fileName.LastIndexOf(".") + 1, (fileName.Length - fileName.LastIndexOf(".") - 1));

            //把EXCEL导入到DataSet
            DataSet ds = new DataSet();
            string connStr = string.Empty;

            if (strEName == "xls")
            {
                connStr = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + fileName + ";Extended Properties='Excel 8.0;HDR=YES'";
            }
            else if (strEName == "xlsx")
            {
                connStr = " Provider = Microsoft.ACE.OLEDB.12.0 ; Data Source= " + fileName + ";Extended Properties='Excel 12.0 Xml;HDR=YES'";
            }
            else
            {
                return null;
            }

            using (OleDbConnection conn = new OleDbConnection(connStr))
            {
                conn.Open();
                OleDbDataAdapter da;
                for (int i = 1; i <= n; i++)
                {
                    string sql = "select * from [" + SheetSet[i - 1] + "$] ";
                    da = new OleDbDataAdapter(sql, conn);
                    da.Fill(ds, SheetSet[i - 1]);
                    da.Dispose();
                }
                conn.Close();
                conn.Dispose();
            }
            return ds;
        }

        /// 

        /// 把Excel导入到DataSet
        /// 
        /// 文件名
        /// 
        public DataSet SubImportExcel(string fileName, string[] SheetName)
        {
            //判断是否安装EXCEL
            Excel.Application xlApp = new Excel.Application();
            if (xlApp == null)
            {
                _ReturnStatus = -1;
                _ReturnMessage = "无法创建Excel对象，可能您的计算机未安装Excel";
                return null;
            }

            //判断文件是否被其他进程使用            
            Excel.Workbook workbook;
            try
            {
                workbook = xlApp.Workbooks.Open(fileName, 0, false, 5, "", "", false, Excel.XlPlatform.xlWindows, "", true, false, 0, true, 1, 0);
            }
            catch
            {
                _ReturnStatus = -1;
                _ReturnMessage = "Excel文件处于打开状态，请保存关闭";
                return null;
            }

            //获得所有Sheet名称
            int n = workbook.Worksheets.Count;
            string[] SheetSet = new string[n];
            for (int i = 1; i <= n; i++)
            {
                SheetSet[i - 1] = ((Excel.Worksheet)workbook.Worksheets[i]).Name;
            }

            //释放Excel相关对象
            workbook.Close(null, null, null);
            xlApp.Quit();
            if (workbook != null)
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
                workbook = null;
            }
            if (xlApp != null)
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);
                xlApp = null;
            }
            GC.Collect();

            bool bolSheet = true;
            for (int i = 0; i < SheetName.Length; i++)
            {
                if (!((IList)SheetSet).Contains(SheetName[i]))
                {
                    bolSheet = false;
                }
            }

            if (bolSheet)
            {
                string strEName = fileName.Substring(fileName.LastIndexOf(".") + 1, (fileName.Length - fileName.LastIndexOf(".") - 1));

                //把EXCEL导入到DataSet
                DataSet ds = new DataSet();
                string connStr = string.Empty;

                if (strEName == "xls")
                {
                    connStr = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + fileName + ";Extended Properties='Excel 8.0;HDR=YES'";
                }
                else if (strEName == "xlsx")
                {
                    connStr = " Provider = Microsoft.ACE.OLEDB.12.0 ; Data Source= " + fileName + ";Extended Properties='Excel 12.0 Xml;HDR=YES'";
                }
                else
                {
                    return null;
                }

                using (OleDbConnection conn = new OleDbConnection(connStr))
                {
                    conn.Open();
                    OleDbDataAdapter da;
                    for (int i = 0; i < SheetName.Length; i++)
                    {
                        string sql = "SELECT * FROM [" + SheetName[i] + "$]";
                        da = new OleDbDataAdapter(sql, conn);
                        da.Fill(ds, SheetName[i]);
                        da.Dispose();
                    }
                    conn.Close();
                    conn.Dispose();
                }
                return ds;
            }
            else
            {
                _ReturnStatus = -1;
                _ReturnMessage = "Excel文件不存在制定名称的Sheet";
                return null;
            }
        }

        /// 

        /// 把DataTable导出到EXCEL
        /// 
        /// 报表名称
        /// 数据源表
        /// Excel全路径文件名
        /// 导出是否成功
        public bool SubExportExcel(string reportName, System.Data.DataTable dt, string saveFileName)
        {
            if (dt == null | dt.Rows.Count == 0)
            {
                _ReturnStatus = -1;
                _ReturnMessage = "数据集为空！";
                return false;
            }
            bool fileSaved = false;

            //保存文件
            if (saveFileName != "")
            {
                DateTime Process_BeforeTime = DateTime.Now;
                Excel.Application xlApp = new Excel.Application();
                DateTime Process_AfterTime = DateTime.Now;
                if (xlApp == null)
                {
                    _ReturnStatus = -1;
                    _ReturnMessage = "无法创建Excel对象，可能您的计算机未安装Excel";
                    return false;
                }

                Excel.Workbooks workbooks = xlApp.Workbooks;
                Excel.Workbook workbook = workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);
                Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
                Excel.Range range;

                worksheet.Cells.Font.Size = 10;

                long totalCount = dt.Rows.Count;
                long rowRead = 0;
                float percent = 0;

                worksheet.Cells.NumberFormatLocal = "@";
                worksheet.Cells[1, 1] = reportName;
                ((Excel.Range)worksheet.Cells[1, 1]).Font.Size = 12;
                ((Excel.Range)worksheet.Cells[1, 1]).Font.Bold = true;

                //写入字段
                for (int i = 0; i < dt.Columns.Count; i++)
                {
                    worksheet.Cells[2, i + 1] = dt.Columns[i].ColumnName;
                    range = (Excel.Range)worksheet.Cells[2, i + 1];
                    range.Interior.ColorIndex = 15;
                    range.Font.Bold = true;

                }
                //写入数值
                for (int r = 0; r < dt.Rows.Count; r++)
                {
                    for (int i = 0; i < dt.Columns.Count; i++)
                    {
                        worksheet.Cells[r + 3, i + 1] = dt.Rows[r][i].ToString();
                    }
                    rowRead++;
                    percent = ((float)(100 * rowRead)) / totalCount;
                }

                range = worksheet.get_Range(worksheet.Cells[2, 1], worksheet.Cells[dt.Rows.Count + 2, dt.Columns.Count]);
                range.BorderAround(Excel.XlLineStyle.xlContinuous, Excel.XlBorderWeight.xlThin, Excel.XlColorIndex.xlColorIndexAutomatic, null);

                if (dt.Rows.Count > 0)
                {
                    range.Borders[Excel.XlBordersIndex.xlInsideHorizontal].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;
                    range.Borders[Excel.XlBordersIndex.xlInsideHorizontal].LineStyle = Excel.XlLineStyle.xlContinuous;
                    range.Borders[Excel.XlBordersIndex.xlInsideHorizontal].Weight = Excel.XlBorderWeight.xlThin;
                }

                if (dt.Columns.Count > 1)
                {
                    range.Borders[Excel.XlBordersIndex.xlInsideVertical].ColorIndex = Excel.XlColorIndex.xlColorIndexAutomatic;
                    range.Borders[Excel.XlBordersIndex.xlInsideVertical].LineStyle = Excel.XlLineStyle.xlContinuous;
                    range.Borders[Excel.XlBordersIndex.xlInsideVertical].Weight = Excel.XlBorderWeight.xlThin;
                }

                try
                {
                    workbook.Saved = true;
                    workbook.SaveCopyAs(saveFileName);
                    fileSaved = true;
                }
                catch (Exception ex)
                {
                    fileSaved = false;
                    _ReturnStatus = -1;
                    _ReturnMessage = "导出文件时出错,文件可能正被打开！\n" + ex.Message;
                    
                    //WriteInfoToTxt.WriteErrorLog("导出excel" + _ReturnMessage);
                }
                finally
                {
                    //释放Excel对应的对象
                    workbook.Close(Type.Missing, Type.Missing, Type.Missing);

                    if (xlApp != null)
                    {
                        xlApp.Application.Quit();
                        xlApp.Quit();
                    }


                    if (workbook != null)
                    {
                        System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
                        workbook = null;
                    }

                    if (workbooks != null)
                    {
                        System.Runtime.InteropServices.Marshal.ReleaseComObject(workbooks);
                        workbooks = null;
                    }

                    if (xlApp != null)
                    {
                        System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);
                        xlApp = null;
                    }





                    KillExcelProcess(Process_BeforeTime, Process_AfterTime);

                    GC.Collect();
                }
            }
            else
            {
                fileSaved = false;
            }

            return fileSaved;
        }

        public bool ExportExcel(string reportName, System.Data.DataTable dt, string saveFileName)
        {
            bool flag = false;
            if (SubExportExcel(reportName, dt, saveFileName))
            {
                flag = true;
            }
            else
            {
                flag = false;
            }
            GC.Collect();
            return flag;
        }

        public DataSet ImportExcel(string fileName)
        {
            DataSet ds = SubImportExcel(fileName);
            GC.Collect();
            return ds;
        }

        /// 

        /// 关闭当前Excel进程 
        /// 
        /// 
        /// 
        public static void KillExcelProcess(DateTime Process_BeforeTime, DateTime Process_AfterTime)
        {
            foreach (Process pro in System.Diagnostics.Process.GetProcessesByName("EXCEL"))
            {
                DateTime ProcessBeginTime = pro.StartTime;
                if ((ProcessBeginTime >= Process_BeforeTime) && (ProcessBeginTime <= Process_AfterTime))
                {
                    pro.Kill();
                }
            }
        }

        /// 

        /// 在当前工作表中根据数据生成图表:CreateChart(m_Book, m_Sheet, num); 
        /// 
        /// 
        /// 
        /// 
        //private void CreateChart(Excel._Workbook m_Book, Excel._Worksheet m_Sheet, Excel.Range oResizeRange)
        private void CreateChart(Excel._Workbook m_Book, Excel._Worksheet m_Sheet, int num)
        {
            Excel.Range oResizeRange;
            Excel.Series oSeries;
            m_Book.Charts.Add(Missing.Value, Missing.Value, 1, Missing.Value);

            m_Book.ActiveChart.ChartType = Excel.XlChartType.xlLine;//设置图形

            //设置数据取值范围
            m_Book.ActiveChart.SetSourceData(m_Sheet.get_Range("A3", "C" + (num + 1).ToString()), Excel.XlRowCol.xlColumns);
            //m_Book.ActiveChart.Location(Excel.XlChartLocation.xlLocationAutomatic, title);
            //以下是给图表放在指定位置
            m_Book.ActiveChart.Location(Excel.XlChartLocation.xlLocationAsObject, m_Sheet.Name);
            oResizeRange = (Excel.Range)m_Sheet.Rows.get_Item(10, Missing.Value);
            m_Sheet.Shapes.Item(0).Top = (float)(double)oResizeRange.Top;  //调图表的位置上边距
            oResizeRange = (Excel.Range)m_Sheet.Columns.get_Item(6, Missing.Value);  //调图表的位置左边距
            // m_Sheet.Shapes.Item(0).Left = (float)(double)oResizeRange.Left;
            if (num <= 30)
            {
                m_Sheet.Shapes.Item(0).Width = 600;
            }
            else
            {
                m_Sheet.Shapes.Item(0).Width = 20 * num;   //调图表的宽度
            }
            m_Sheet.Shapes.Item(0).Height = 250;  //调图表的高度

            m_Book.ActiveChart.PlotArea.Interior.ColorIndex = 19;  //设置绘图区的背景色 
            m_Book.ActiveChart.PlotArea.Border.LineStyle = Excel.XlLineStyle.xlLineStyleNone;//设置绘图区边框线条
            if (num <= 30)
            {
                m_Book.ActiveChart.PlotArea.Width = 600;
            }
            else
            {
                m_Book.ActiveChart.PlotArea.Width = 20 * num;   //设置绘图区宽度
            }
            //m_Book.ActiveChart.ChartArea.Interior.ColorIndex = 10; //设置整个图表的背影颜色
            //m_Book.ActiveChart.ChartArea.Border.ColorIndex = 8;// 设置整个图表的边框颜色
            m_Book.ActiveChart.ChartArea.Border.LineStyle = Excel.XlLineStyle.xlLineStyleNone;//设置边框线条
            m_Book.ActiveChart.HasDataTable = false;

            //设置Legend图例的位置和格式
            m_Book.ActiveChart.Legend.Top = 20.00; //具体设置图例的上边距
            m_Book.ActiveChart.Legend.Left = 60.00;//具体设置图例的左边距
            m_Book.ActiveChart.Legend.Interior.ColorIndex = Excel.XlColorIndex.xlColorIndexNone;
            m_Book.ActiveChart.Legend.Width = 150;
            m_Book.ActiveChart.Legend.Font.Size = 9.5;
            //m_Book.ActiveChart.Legend.Font.Bold = true;
            m_Book.ActiveChart.Legend.Font.Name = "宋体";
            //m_Book.ActiveChart.Legend.Position = Excel.XlLegendPosition.xlLegendPositionTop;//设置图例的位置
            m_Book.ActiveChart.Legend.Border.LineStyle = Excel.XlLineStyle.xlLineStyleNone;//设置图例边框线条

            //设置X轴的显示
            Excel.Axis xAxis = (Excel.Axis)m_Book.ActiveChart.Axes(Excel.XlAxisType.xlValue, Excel.XlAxisGroup.xlPrimary);
            xAxis.MajorGridlines.Border.LineStyle = Excel.XlLineStyle.xlDot;
            xAxis.MajorGridlines.Border.ColorIndex = 1;//gridLine横向线条的颜色
            xAxis.HasTitle = false;
            xAxis.TickLabels.Font.Name = "宋体";
            xAxis.TickLabels.Font.Size = 9;

            //            .NumberFormatLocal = "0_ "
            //设置Y轴的显示
            Excel.Axis yAxis = (Excel.Axis)m_Book.ActiveChart.Axes(Excel.XlAxisType.xlCategory, Excel.XlAxisGroup.xlPrimary);
            yAxis.TickLabelSpacing = 30;
            //yAxis.TickLabels.NumberFormat = "M月D日";
            //yAxis.MaximumScaleIsAuto = true;
            //yAxis.MinimumScaleIsAuto = true;

            yAxis.TickLabels.Orientation = Excel.XlTickLabelOrientation.xlTickLabelOrientationHorizontal;//Y轴显示的方向,是水平还是垂直等
            yAxis.TickLabels.Font.Size = 8;
            yAxis.TickLabels.Font.Name = "宋体";
            //m_Book.ActiveChart.Floor.Interior.ColorIndex = 8;  
            /***以下是设置标题*****
            m_Book.ActiveChart.HasTitle=true;
            m_Book.ActiveChart.ChartTitle.Text = "净值指数";
            m_Book.ActiveChart.ChartTitle.Shadow = true;
            m_Book.ActiveChart.ChartTitle.Border.LineStyle = Excel.XlLineStyle.xlContinuous;
            */
            oSeries = (Excel.Series)m_Book.ActiveChart.SeriesCollection(1);
            oSeries.Name = "在线数";
            oSeries.Values = "='" + m_Sheet.Name + "'!$C$3:$C$" + (num + 1).ToString();
            oSeries.XValues = "='" + m_Sheet.Name + "'!$A$3:$B$" + (num + 1).ToString();
            oSeries.Border.ColorIndex = 45;
            oSeries.Border.Weight = Excel.XlBorderWeight.xlThick;
            //oSeries = (Excel.Series)m_Book.ActiveChart.SeriesCollection(2);
            //oSeries.Border.ColorIndex = 9;
            //oSeries.Border.Weight = Excel.XlBorderWeight.xlThick;

        }


    }
}

Winform窗体事件：

 private void button1_Click_1(object sender, EventArgs e)
        {
            string path = "";
            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                path = Path.GetFullPath(ofd.FileName);
            }
            ExcelIO exio = new ExcelIO();
            DataSet ds = exio.SubImportExcel(path);
            this.dataGridView1.DataSource = ds.Tables[0];
            InsertToSql(ds.Tables[0]);
        }
        private void InsertToSql(DataTable dt)
        {

            string connString = Properties.Settings.Default.StudentAttendenceConnectionString;
            SqlParameter[] sqlpars = null;
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                sqlpars = new SqlParameter[6];
                sqlpars[0] = new SqlParameter("@StudentNumber", dt.Rows[i].ItemArray[0].ToString());
                sqlpars[1] = new SqlParameter("@StudentID", dt.Rows[i].ItemArray[1].ToString());
                sqlpars[2] = new SqlParameter("@ClassID",Int32.Parse(dt.Rows[i].ItemArray[2].ToString()));
                sqlpars[3] = new SqlParameter("@StudentName", dt.Rows[i].ItemArray[3].ToString());
                sqlpars[4] = new SqlParameter("@StudentGender", dt.Rows[i].ItemArray[4].ToString());
                sqlpars[5] = new SqlParameter("@StudentPhoto", dt.Rows[i].ItemArray[5].ToString());

               
                int row =RunProcedureForUpdate("InsertIntoStudentInfo", sqlpars,connString);
                if (row == 0)
                {
                    MessageBox.Show("导入失败");
                }
                else
                {
                    MessageBox.Show("导入成功");
                }
            }
        }

/// 

        /// 更新--执行存储过程，返回影响的行数        
        /// 
        /// 存储过程名
        /// 存储过程参数
        /// 
        private int RunProcedureForUpdate(string storedProcName, IDataParameter[] parameters,string strCon)
        {
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                int rowsAffected = 0;
                try
                {
                    connection.Open();
                    SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
                    rowsAffected = command.ExecuteNonQuery();
                }
                catch (Exception ex)
                {
                    Debug.Print(ex.ToString());
                }
                return rowsAffected;
            }
        }


        /// 

        /// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
        /// 
        /// 数据库连接
        /// 存储过程名
        /// 存储过程参数
        /// SqlCommand
        private  SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            SqlCommand command = new SqlCommand(storedProcName, connection);
            command.CommandType = CommandType.StoredProcedure;
            if (parameters != null)
            {
                foreach (SqlParameter parameter in parameters)
                {
                    command.Parameters.Add(parameter);
                }
            }
            return command;
        }

最后如果提示导入成功但未更新到数据库，将Program.cs的main函数中添加

static class Program
    {
        /// 

        /// 应用程序的主入口点。
        /// 
        [STAThread]
        static void Main()
        {
            string dataDir = AppDomain.CurrentDomain.BaseDirectory;
　　        if (dataDir.EndsWith(@"\bin\Debug\")|| dataDir.EndsWith(@"\bin\Release\"))
　　        {
　　            dataDir = System.IO.Directory.GetParent(dataDir).Parent.Parent.FullName;
　　            AppDomain.CurrentDomain.SetData("DataDirectory", dataDir);
　　        }
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new MainForm());
        }
    }