多个表 导出EXCEL 代码 （分享）

多个表 导出EXCEL 

 

 public void ExportExcel(DataSet dsExcel)
        {

            DataSet ds = dsExcel;
            if (ds == null) return;

            string saveFileName = "";
            bool fileSaved = false;
            SaveFileDialog saveDialog = new SaveFileDialog();
            saveDialog.DefaultExt = "xls";
            saveDialog.Filter = "Excel文件|*.xls";
            saveDialog.FileName = "招生数据备份";
            saveDialog.ShowDialog();
            saveFileName = saveDialog.FileName;
            if (saveFileName.IndexOf(":") < 0) return; //被点了取消 

            Excel.Application xlApp = new Excel.Application();

            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;
            string[] tableName ={ "TB_Dic_ExamArea",

"TB_Dic_ExamArea_SpecialityKinds",

"TB_Dic_ExamRoom",

"TB_Dic_SpecialityFocus",

"TB_ExamAchievement",

"TB_SignUpStudents",

"TB_SignUpStudentsFamilyMember",

"TB_SignUpStudentsPayFee",

"TB_SignUpStudentsResume",

"TB_SignUpStudentsSpeciality",

"TB_SystemInfo",

"TB_Users"};

            Excel.Workbook workbook = workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);
            for (int a = 0; a < 12; a++)
            {
                Excel.Worksheet newWorksheet;
                newWorksheet = (Excel.Worksheet)workbook.Worksheets.Add(System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value, System.Reflection.Missing.Value);
                newWorksheet.Name = tableName[11-a];
            }
            //
            proValue = 0;
            for (int b = 0; b < 12; b++)
            {

                Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Worksheets[b+1];//取得sheet1 
                //写入字段 
                int cellNum = ds.Tables[b].Columns.Count;
                for (int i = 0; i < cellNum; i++)
                {
                    worksheet.Cells[1, i + 1] = ds.Tables[b].Columns[i].ColumnName;

                    worksheet.get_Range(worksheet.Cells[1, 1 + i], worksheet.Cells[1 + ds.Tables[b].Rows.Count, 1 + i]).NumberFormatLocal = "@";
                }
                //写入数值 

                int rowNum = ds.Tables[b].Rows.Count;
                for (int r = 0; r < rowNum; r++)
                {
                    for (int i = 0; i < cellNum; i++)
                    {
                        worksheet.Cells[r + 2, i + 1] = ds.Tables[b].Rows[r][i].ToString();
                    }
                    System.Windows.Forms.Application.DoEvents();
                }
                Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[b].Rows.Count + 1, 2]);
                rg.NumberFormat = "00000000";
                proValue++;
                progressBar1.PerformStep();
            }
            if (saveFileName != "")
            {
                try
                {
                    workbook.Saved = true;
                    workbook.SaveCopyAs(saveFileName);
                    fileSaved = true;
                }
                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 
            if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //打开EXCEL
            progressBar1.Value = 0;
        }