C#datagridview导出Excel报表

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Data;
using System.Windows.Forms;
using Microsoft.Office.Interop.Excel ;

namespace Property_management
{
    class Export
    {
        private static System.Windows.Forms.DataGridView gridView;
        private static System.Windows.Forms.ProgressBar toolStripProgressBar1;
        private static Timer time;
        private static DataSet objSet = new DataSet();
        private static SaveFileDialog saveFileDialog = new SaveFileDialog();
        private static SaveFileDialog saveFileDialog2 = new SaveFileDialog();

        public static System.Windows.Forms.DataGridView _gridView
        {
            get { return gridView; }
            set { gridView = value; }
        }
        public static System.Windows.Forms.ProgressBar _toolStripProgressBar1
        {
            get { return toolStripProgressBar1; }
            set { toolStripProgressBar1 = value; }
        }
        public static Timer _time
        {
            get { return time; }
            set { time = value; }
        }
        public static DataSet _objSet
        {
            get { return objSet; }
            set { objSet.Clear(); objSet = value; }
        }

        public static void ExportTOExcel2()
        {
            if (gridView.Rows.Count == 0)
            {
                MessageBox.Show("没有数据可供导出！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
            else
            {
                saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
                saveFileDialog.FilterIndex = 0;
                saveFileDialog.RestoreDirectory = true;
                saveFileDialog.CreatePrompt = true;
                saveFileDialog.Title = "导出文件保存路径";
                saveFileDialog.ShowDialog();
                string strName = saveFileDialog.FileName;
                if (strName.Length != 0)
                {
                    toolStripProgressBar1.Visible = true;
                    System.Reflection.Missing miss = System.Reflection.Missing.Value;
                    Microsoft.Office.Interop.Excel.ApplicationClass excel = new Microsoft.Office.Interop.Excel.ApplicationClass();
                    excel.Application.Workbooks.Add(true); ;
                    excel.Visible = false;//若是true，则在导出的时候会显示EXcel界面。
                    if (excel == null)
                    {
                        MessageBox.Show("EXCEL无法启动！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        return;
                    }
                    Microsoft.Office.Interop.Excel.Workbooks books = (Microsoft.Office.Interop.Excel.Workbooks)excel.Workbooks;
                    Microsoft.Office.Interop.Excel.Workbook book = (Microsoft.Office.Interop.Excel.Workbook)(books.Add(miss));
                    Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.ActiveSheet;
                    sheet.Name = "test";

                    //生成字段名称
                    for (int i = 0; i < gridView.ColumnCount; i++)
                    {
                        excel.Cells[1, i + 1] = gridView.Columns[i].HeaderText.ToString();
                    }
                    //填充数据
                    for (int i = 0; i < gridView.RowCount; i++)
                    {
                        for (int j = 0; j < gridView.ColumnCount; j++)
                        {
                            if (gridView[j, i].Value.GetType() == typeof(string))
                            {
                                excel.Cells[i + 2, j + 1] ="'"+gridView[j, i].Value.ToString();
                            }
                            else
                            {
                                excel.Cells[i + 2, j + 1] = gridView[j, i].Value.ToString();

}
                        }
                        toolStripProgressBar1.Value += 100 / gridView.RowCount;
                    }
                    sheet.SaveAs(strName, miss, miss, miss, miss, miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss);
                    book.Close(false, miss, miss);
                    books.Close();
                    excel.Quit();
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(books);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
                    GC.Collect();
                    MessageBox.Show("数据已经成功导出!!");
                    toolStripProgressBar1.Value = 0;
                    toolStripProgressBar1.Visible = false;

                    System.Diagnostics.Process.Start(strName); 
                }
            }
        }

}
}

我把功能放在这个类里了
需要添加一个引用
右边的资源管理器右键单击“引用”，选择添加引用-》com，找到microsoft excel 11 那个，添加进去
如果有个黄色的叹号，建议重装一次office

下面是如何使用
Export._gridView = GV;//这是指定DatagridView
Export._toolStripProgressBar1 = PB;//如果有滚动条的话加上,没有不设定也行
Export._objSet = this.propertyDataSet5.Fee_already.DataSet;//指定你的DatagridView使用的dataset
Export.ExportTOExcel2();//调用函数导出