我的winform程序从datagrid导出到excel老是出错，请高手指点！在线等！

Question

private string ExportToExcel(string filename)
        {
            System.Threading.Thread thisThread = System.Threading.Thread.CurrentThread;
            System.Globalization.CultureInfo originalCulture = thisThread.CurrentCulture;
            object objOpt = System.Reflection.Missing.Value;
            try
            {
                object obj = System.Reflection.Missing.Value;
                Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
                app.Visible = true;
                Workbooks workbooks = app.Workbooks;
                _Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);
                Sheets sheets = workbook.Worksheets;
                _Worksheet worksheet = (_Worksheet)sheets.get_Item(1);
                int ridx = 1;
                int cidx = 0;
                for (int i = 0; i < dataGridView1.ColumnCount; i++)
                {
                    worksheet.Cells[0, i] = dataGridView1.Columns[i].HeaderText;
                }
                if (dataGridView1.RowCount > 0)
                {
                    for (int j = 0; j < dataGridView1.RowCount;j++)
                    {
                        for (int k = 0; k < dataGridView1.ColumnCount; k++)
                        {
                            worksheet.Cells[ridx, cidx] = dataGridView1[j, k].Value.ToString();
                            cidx++;
                        }
                        ridx++;
                    }
                }
                workbook.SaveAs(filename,obj,obj,obj,obj,obj,XlSaveAsAccessMode.xlExclusive,obj,obj,obj,obj,obj);
                workbook.Saved = true;
    app.UserControl = false;
    app.Quit();
                return "导出[" + filename + "]成功";
            }
            catch (Exception _e)
            {
                return "导出失败，原因：\n" + _e.Message;
            }
            finally
            {
                thisThread.CurrentCulture = originalCulture;
            }
        }

Answer 1

public static void ExportDataGridViewToExcel(DataGridView dataGridview1)
        {
            SaveFileDialog saveFileDialog = new SaveFileDialog();
            saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
            saveFileDialog.FilterIndex = 0;
            saveFileDialog.RestoreDirectory = true;
            saveFileDialog.CreatePrompt = true;
            saveFileDialog.Title = "导出Excel文件到";            //saveFileDialog.ShowDialog();
            if (saveFileDialog.ShowDialog()==DialogResult.OK)
            {            
                Stream myStream;
                myStream = saveFileDialog.OpenFile();
                StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));
                string str = "";
                try
                {                    //写标题  
                    for (int i = 0; i < dataGridview1.ColumnCount; i++)
                    {
                        if (i > 0)
                        {
                            str += "\t";
                        }
                        str += dataGridview1.Columns[i].HeaderText;
                    }                    sw.WriteLine(str);
                    //写内容 
                    for (int j = 0; j < dataGridview1.Rows.Count - 1; j++)
                    {
                        string tempStr = "";
                        for (int k = 0; k < dataGridview1.Columns.Count; k++)
                        {
                            if (k > 0)
                            {
                                tempStr += "\t";
                            }
                            tempStr += dataGridview1.Rows[j].Cells[k].Value.ToString();
                        }
                        sw.WriteLine(tempStr);
                    }
                    sw.Close();
                    myStream.Close();
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.ToString());
                }
                finally
                {
                    sw.Close();
                    myStream.Close();
                    MessageBox.Show("ok");
                }
             }
        }

Answer 2

运行的时候报错。
jonasLIAO() 。你的方法不是写excel的。
请哪位高人给点建议。或者例程。

Answer 3

if (MessageBox.Show("你確認要導出數據到EXCEL嗎!", "提示", System.Windows.Forms.MessageBoxButtons.OKCancel) == System.Windows.Forms.DialogResult.OK)
             {
                 this.saveFileDialog1.AddExtension = true;
                 this.saveFileDialog1.DefaultExt = "xls";
                 saveFileDialog1.Filter = "*.xls|xls";
                 this.saveFileDialog1.ShowDialog();
                 FileName = this.saveFileDialog1.FileName;
                 if (FileName == "")
                 {
                     return;
                 }
             }
        
             String cmd = "SELECT a.user_id , a.user_ename, a.user_cname, a.update_user, a.update_time FROM wms_user a";
             CDBmySQL dbALM = new CDBmySQL(clsGol.DBDataBase, clsGol.DBServerName, clsGol.DBUserName, clsGol.DBUserPassWord);
             DataTable dt = dbALM.GetDataTable("wms_user", cmd);
             //System.Data.DataTable dt = new System.Data.DataTable();             long totalCount = dt.Rows.Count;
             long rowRead = 0;
             float percent = 0;
             Excel.Application xlApp = null;
             xlApp = new Excel.Application();
             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[1,1] = "員工編號";
             worksheet.Cells[1, 2] = "英文名稱";
             worksheet.Cells[1, 3] = "中文名稱";
             worksheet.Cells[1, 4] = "修改者";
             worksheet.Cells[1, 5] = "修改時間";
             range = (Excel.Range)worksheet.Cells[1, 5];
             for (int r = 0; r < dt.Rows.Count; r++)
             {
                 worksheet.Cells[r + 2, 1] = r + 1;
                 for (int i = 0; i < dt.Columns.Count; i++)
                 {
                     //worksheet.Cells[r+2,i+1]=dt.Rows[r][i];
                     if (i + 1 != dt.Columns.Count+1)
                         worksheet.Cells[r + 2, i + 1] = dt.Rows[r][i];
                 }
                 rowRead++;
                 percent = ((float)(100 * rowRead)) / totalCount;
                 System.Windows.Forms.Application.DoEvents();
             }
             range = worksheet.get_Range(worksheet.Cells[2, 1], worksheet.Cells[dt.Rows.Count + 2, dt.Columns.Count]);
             workbook.Saved = true;
             workbook.SaveCopyAs(FileName);

Answer 4

上面的那段代码发的人，能不能顺便把Excel需要的引用，以及它所在的类写一下呀，否则没办法用阿

Answer 5

更改控制面板中本地区域设置为英语(美国)看看，或者
System.Globalization.CultureInfo cultureInfo = new System.Globalization.CultureInfo("en-US"); // 0x0409
System.Threading.Thread.CurrentThread.CurrentCulture = cultureInfo;完成后设置为zh-CN，要么去掉！

Answer 6

http://msdn.microsoft.com/library/chs/default.asp?url=/library/CHS/dv_wrcore/html/wrconglobalizinglocalizingofficesolutions.asp

Answer 7

Ryanjing写的代码没问题，我测试过了，不过要添加一个com+引用，是mircoft excel 11.0 object library;