通过DataSet导出Excel

   在以前的项目中，做这些类似的功能也挺多的，没保存好，现在在这里记下，会以后所用：

/// <summary>
        /// 通过DataSet导出Excel
        /// </summary>
        /// <param name="ds"></param>
        public static void ExporDataSetToExcel(DataSet ds)
        {
            if (ds == null) return;

            string savefilename = "";
            bool filesaved = false;

            SaveFileDialog savedialog = new SaveFileDialog();
            savedialog.DefaultExt = "xls";
            savedialog.Filter = "excel文件|*.xls";
            savedialog.FileName = "sheet1";
            savedialog.ShowDialog();
            savefilename = savedialog.FileName;
            if (savefilename.IndexOf(":") < 0) return; //被点了取消 

            Excel.Application xlapp = new Excel.ApplicationClass();

            if (xlapp == null)
            {
                MessageBox.Show("无法创建excel对象，可能您的机子未安装excel");
                return;
            }

            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;

            //   string oldcaption=this.captiontext; 
            long totalcount = ds.Tables[0].Rows.Count;
            long rowread = 0;
            float percent = 0;

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

            }
            //写入数值 
            //   this.captionvisible = true; 
            for (int r = 0; r < ds.Tables[0].Rows.Count; r++)
            {
                for (int i = 0; i < ds.Tables[0].Columns.Count; i++)
                {
                    worksheet.Cells[r + 3, i + 1] = ds.Tables[0].Rows[r][i];
                }
                rowread++;
                percent = ((float)(100 * rowread)) / totalcount;
                //    this.captiontext = "正在导出数据["+ percent.tostring("0.00") +"%]"; 
                System.Windows.Forms.Application.DoEvents();
            }
            //   this.captionvisible = false; 
            //   this.captiontext = oldcaption; 

            range = worksheet.get_Range(worksheet.Cells[2, 1], worksheet.Cells[ds.Tables[0].Rows.Count + 2, ds.Tables[0].Columns.Count]);
            range.BorderAround(Excel.XlLineStyle.xlContinuous, Excel.XlBorderWeight.xlThin, Excel.XlColorIndex.xlColorIndexAutomatic, null);

            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 (ds.Tables[0].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;
            }

            if (savefilename != "")
            {
                try
                {
                    workbook.Saved = true;
                    workbook.SaveCopyAs(savefilename);
                    filesaved = true;
                    MessageBox.Show("文件已经成功导出...");
                }
                catch (Exception ex)
                {
                    filesaved = false;
                    MessageBox.Show("导出文件时出错,文件可能正被打开！/n" + ex.Message);
                }
            }
            else
            {
                filesaved = false;
            }
            xlapp.Quit();
            GC.Collect();//强行销毁 

        }

这些代码可以完成此功能，以后会继续完善!