如何为dynamic生成的工作簿创build下载选项
我使用下面的代码将SQL数据转换为Excel工作簿..通过使用此代码.xls文件创build在C://驱动器。 如何使其可下载，客户可以下载它？ 帮我。 我正在使用asp.net与C＃。 下面的代码工作正常存储.xls文件中
c：/驱动器。
try { myfilename = subject + "_Sessional" + sessional + "_Batch" + batch; string sql = null; string data = null; int i = 1; int j = 0; Excel.Application xlApp; Excel.Workbook xlWorkBook; Excel.Worksheet xlWorkSheet; object misValue = System.Reflection.Missing.Value; xlApp = new Excel.ApplicationClass(); xlWorkBook = xlApp.Workbooks.Add(misValue); xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1); xlWorkSheet.Cells[1, 1] = "Id"; xlWorkSheet.Cells[1, 2] = "RollNo"; xlWorkSheet.Cells[1, 3] = "Name"; xlWorkSheet.Cells[1, 4] = "Branch"; xlWorkSheet.Cells[1, 5] = "Sem"; xlWorkSheet.Cells[1, 6] = "Year"; xlWorkSheet.Cells[1, 7] = "Batch"; xlWorkSheet.Cells[1, 8] = "Subject"; xlWorkSheet.Cells[1, 9] = "Sessional"; xlWorkSheet.Cells[1, 10] = "Attendence"; xlWorkSheet.Cells[1, 11] = "OutOff"; using (cnn = new SqlConnection(strConnString)) { cnn.Open(); sql = "SELECT DISTINCT [st_id], [st_rollno], [st_name], [branch_name], [sem_no], [batch_year] FROM [Student] WHERE (([st_rollno] >=@st_rollno) AND ([st_rollno] <=@st_rollno2) AND ([sem_no] = @sem_no) AND ([branch_name] = @branch_name)) ORDER BY [st_rollno]"; SqlDataAdapter dscmd = new SqlDataAdapter(); SqlCommand selectCMD = new SqlCommand(sql, cnn); dscmd.SelectCommand = selectCMD; selectCMD.Parameters.Add("@st_rollno", SqlDbType.VarChar, 10).Value = firstrollno.Text; selectCMD.Parameters.Add("@st_rollno2", SqlDbType.VarChar, 10).Value = lastrollno.Text; selectCMD.Parameters.Add("@sem_no", SqlDbType.Int).Value = dpsemno.SelectedItem.Text.ToString(); selectCMD.Parameters.Add("@branch_name", SqlDbType.VarChar, 5).Value = dpbranchname.SelectedItem.Text.ToString(); DataSet ds = new DataSet(); dscmd.Fill(ds); for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++) { for (j = 0; j <= ds.Tables[0].Columns.Count - 1; j++) { data = ds.Tables[0].Rows[i].ItemArray[j].ToString(); xlWorkSheet.Cells[i + 2, j + 1] = data; xlWorkSheet.Cells[i + 2, 7] = batch; xlWorkSheet.Cells[i + 2, 8] = subject; xlWorkSheet.Cells[i + 2, 9] = sessional; xlWorkSheet.Cells[i + 2, 11] = outoff; } } xlWorkBook.SaveAs("c:\\" + myfilename + ".xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue); xlWorkBook.Close(true, misValue, misValue); xlApp.Quit(); releaseObject(xlWorkSheet); releaseObject(xlWorkBook); releaseObject(xlApp); lbmsg.Text = "Excel file created,you can find the file in c:\\"; lbmsg.ForeColor = Color.Green; lbmsg.Visible = true; } } catch (SqlException ee) { lbmsg.Text = ee.Message; lbmsg.ForeColor = Color.Green; lbmsg.Visible = true; } finally { cnn.Close(); } } private void releaseObject(object obj) { try { System.Runtime.InteropServices.Marshal.ReleaseComObject(obj); obj = null; } catch (Exception ex) { obj = null; Label2.Text= "Exception Occured while releasing object " + ex.ToString(); Label2.ForeColor = Color.Green; Label2.Visible = true; } }
很简单，把这个代码放在下载button上点击
Response.Clear(); Response.ClearHeaders(); Response.ClearContent(); Response.AddHeader("content-disposition", "attachment; filename=" + fileName); Response.AddHeader("Content-Type", "application/Excel"); Response.ContentType = "application/vnd.xls"; Response.AddHeader("Content-Length", file.Length.ToString()); Response.WriteFile(file.FullName); Response.End();
希望这个作品。