1.用查询表的方式查询并show在数据集控件上。
public static string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =C:\08.xls;Extended Properties=Excel 8.0"; public static DataSet ds; protected void Page_Load(object sender, EventArgs e) { OleDbConnection conn = new OleDbConnection(strCon); string sql = "select * from [Sheet1$]"; conn.Open(); OleDbDataAdapter myCommand = new OleDbDataAdapter(sql, strCon); ds = new DataSet(); myCommand.Fill(ds, "[Sheet1$]"); conn.Close(); datagrid1.DataMember = "[Sheet1$]"; datagrid1.DataSource = ds; datagrid1.DataBind(); //Excel.Application excel = new Excel.Application(); //excel.Application.Workbooks.Add(true); //excel.Visible = true; }
2.一个一个单元格的进行插入
1 string str = @"Data Source=IT-428E4EA4B0C7SQLEXPRESS;Initial Catalog=TestBase;Integrated Security=True"; 2 SqlConnection conn = new SqlConnection(str); 3 conn.Open(); 4 int n = 0; 5 for (int i = 1; i < 20; i++) 6 { 7 if (n > 3) 8 break; 9 else 10 if (msheet.Cells.get_Range("A" + i, Type.Missing).Text.ToString() == "" && n <= 3) 11 { n++; } 12 else 13 { 14 //循环获取excel单元格的值一次一次的插入,excuteSql为执行的存储过程 15 excuteSql(msheet.Cells.get_Range("B" + i, Type.Missing).Text.ToString(), 16 msheet.Cells.get_Range("B" + (i + 1), Type.Missing).Text.ToString(), 17 msheet.Cells.get_Range("B" + (i + 2), Type.Missing).Text.ToString(), 18 conn); 19 i = i + 3; 20 21 } 22 } 23 24 conn.Close();
二快速导入导出
1.我们都知道当向db里批量插入数据的时候我们会选择SqlBulkCopy
if (dataTable!=null && dataTable.Rows.Count!=0)
{
sqlBulkCopy.WriteToServer(dataTable);
}
这个可以看 深山老林新发的一篇SQLServer中批量插入数据方式的性能对比下面是SqlBulkCopy的方法,这个方法有一个弊端就是当excel某一列即有文字,还有日期的时候,会出现null值,我在网上查了一些资料说连接字串加上;HDR=YES;IMEX=1'的时候会都当做字符处理,但是还是会出现一些bug,所以建议最好先把excel数据分析到datatable里然后再用SqlBulkCopy导入数据库
1 // block copy to DB from Excel 2 //By xijun, 3 //step 1 create an excel file C:Inetpubwwwroot est.xls , fill cell(1,1) with "Data",cell(1,2) with "name" 4 //step 2 create table named "Data" with 2 column ("data","name") in your DB 5 //there the code below: 6 DateTime t1 = DateTime.Now; 7 Response.Write("<br>start time:" + t1.ToString()); 8 string ExcelFile = @"C:\20090916_Hub_Report.xls"; 9 string excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFile + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'"; 10 11 using (OleDbConnection excelConnection = new OleDbConnection(excelConnectionString)) 12 { 13 14 excelConnection.Open(); 15 //Getting source data 16 //非空讀入數據 17 OleDbCommand command = new OleDbCommand("Select [Region],[CustomerPN],[RMA],[Date],[QTY],[Return/Pull] FROM [20090916_Hub_Report$] ", excelConnection); 18 // Initialize SqlBulkCopy object 19 20 using (OleDbDataReader dr = command.ExecuteReader()) 21 { 22 // Copy data to destination 23 string sqlConnectionString = @"Data Source=MININT-G87PHNASQLEXPRESS;Initial Catalog=GDS_Service;Integrated Security=True"; 24 using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnectionString)) 25 { 26 bulkCopy.DestinationTableName = "GDS_Hub_data"; 27 //加入只加入一個列的話,那么就會其他數據庫列都默認為空。 28 bulkCopy.ColumnMappings.Add("Region", "region"); 29 bulkCopy.ColumnMappings.Add("CustomerPN", "customer_item_number"); 30 bulkCopy.ColumnMappings.Add("RMA", "Rma"); 31 bulkCopy.ColumnMappings.Add("Date", "date"); 32 bulkCopy.ColumnMappings.Add("QTY", "Qty_1"); 33 bulkCopy.ColumnMappings.Add("Return/Pull", "return_pull"); 34 //bcp.BatchSize = 100;//每次传输的行数 35 //bcp.NotifyAfter = 100;//进度提示的行数 36 bulkCopy.BatchSize = 100; 37 bulkCopy.NotifyAfter = 100; 38 bulkCopy.WriteToServer((IDataReader)dr); 39 40 41 } 42 } 43 //Closing connection 44 excelConnection.Close(); 45 } 46 47 DateTime t2 = DateTime.Now; 48 Response.Write("<br>End time:" + t2.ToString()); 49 Response.Write("<br>use time:" + ((TimeSpan)(t2 - t1)).Milliseconds.ToString() + " Milliseconds"); 50 Response.Write("<br>inser record count :3307");
2.快速导出db的数据到excel
这种方法就是利用
Excel.QueryTables
Excel.QueryTable
Querytable把数据快速导入excel里。我们在做复杂报表的时候,这个用的是比较多了,但是单单会这个没有用,它只是快速的把db里的数据放放到excel里,
在做大量数据而且需要设定excel样式的时候我们会选择先用这种方法把数据导入excel一个临时sheet,再利sheet复制,sheet移动,和一些excel样式设定,以及
excel一个强大的自动填充的功能,那么这些就可以让我们快速的做出花样多试的excel报表,当然这个要求我们比较熟练office的操作,包括宏的操作。
1 public string query_table_getdata(string sourpath) 2 { 3 string str_path = sourpath.Substring(0, sourpath.Length - 22); 4 str_path = str_path + "basic.xls"; 5 6 Excel.QueryTables m_objQryTables = null; 7 Excel.QueryTable m_objQryTable = null; 8 Excel.Application m_objExcel = null; 9 Excel.Workbooks m_objBooks = null; 10 Excel.Workbook m_objBook = null; 11 Excel.Sheets m_objSheets = null; 12 Excel.Worksheet m_objSheet = null; 13 Excel.Range m_objRange = null; 14 m_objExcel = new Excel.Application(); 15 16 //try 17 //{ 18 m_objBooks = m_objExcel.Workbooks; 19 m_objBooks.Open(sourpath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, 20 Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); 21 22 m_objBook = (Excel.Workbook)m_objBooks.get_Item(1); 23 24 25 m_objSheets = (Excel.Sheets)m_objBook.Worksheets; 26 m_objSheet = (Excel.Worksheet)m_objSheets.get_Item(1); 27 m_objRange = m_objSheet.get_Range("A2", Type.Missing); 28 m_objQryTables = m_objSheet.QueryTables; 29 string sqlstr = "SELECT [day01],[day02],[day03],[day04],[day05],[day06],[day07],[day08],[day09],[day10],[day11],[day12],[day13],[day14]"; 30 sqlstr += ",[week01] ,[week02],[week03],[week04],[week05],[week06],[week07],[week08],[week09],[week10],[week11],[week12],[week13],[week14]"; 31 sqlstr += ",[week15],[week16],[week17],[week18],[week19],[week20],[week21],[week22],[week23],[week24]"; 32 sqlstr += " FROM [GDS_Service].[dbo].[GDS_Service_Report_Base] order by groupID ,id"; 33 //可以放在配置文件里 34 string conn = @"Provider=SQLOLEDB.1;Data Source=MININT-G87PHNASQLEXPRESS;uid=xijun_ke;Password=12345678; Initial Catalog=GDS_Service;Persist Security Info=False;"; 35 36 m_objQryTable = (Excel.QueryTable)m_objQryTables.Add("OLEDB;" + conn, m_objRange, sqlstr); 37 38 m_objQryTable.RefreshStyle = Excel.XlCellInsertionMode.xlInsertEntireRows; 39 40 m_objQryTable.Refresh(false); 41 m_objBook.SaveAs(str_path, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); 42 m_objBook.Close(false, Type.Missing, Type.Missing); 43 //} 44 //catch (Exception ee) 45 //{ 46 // mp.WriteLog(ee.ToString()); 47 //} 48 //finally 49 //{ 50 m_objExcel.Quit(); 51 GC.Collect(); 52 //} 53 return str_path; 54 55 } 复制代码
com操作excel的一些特性操作:
range.NumberFormatLocal = "@"; //设置单元格格式为文本 range = (Range)worksheet.get_Range("A1", "E1"); //获取Excel多个单元格区域:本例做为Excel表头 range.Merge(0); //单元格合并动作 worksheet.Cells[1, 1] = "Excel单元格赋值"; //Excel单元格赋值 range.Font.Size = 15; //设置字体大小 range.Font.Underline=true; //设置字体是否有下划线 range.Font.Name="黑体"; 设置字体的种类 range.HorizontalAlignment=XlHAlign.xlHAlignCenter; //设置字体在单元格内的对其方式 range.ColumnWidth=15; //设置单元格的宽度 range.Cells.Interior.Color=System.Drawing.Color.FromArgb(255,204,153).ToArgb(); //设置单元格的背景色 range.Borders.LineStyle=1; //设置单元格边框的粗细 range.BorderAround(XlLineStyle.xlContinuous,XlBorderWeight.xlThick,XlColorIndex.xlColorIndexAutomatic,System.Drawing.Color.Black.ToArgb()); //给单元格加边框 range.EntireColumn.AutoFit(); //自动调整列宽 Range.HorizontalAlignment= xlCenter; // 文本水平居中方式 Range.VerticalAlignment= xlCenter //文本垂直居中方式 Range.WrapText=true; //文本自动换行 Range.Interior.ColorIndex=39; //填充颜色为淡紫色 Range.Font.Color=clBlue; //字体颜色 xlsApp.DisplayAlerts=false; //保存Excel的时候,不弹出是否保存的窗口直接进行保存 workbook.SaveCopyAs(temp);/**////填入完信息之后另存到路径及文件名字
excel宏操作,sheet和单元格操作:
1 /// <summary> 2 /// 讀取excel數據和插入公式 3 /// </summary> 4 /// <param name="sender"></param> 5 /// <param name="e"></param> 6 protected void Button2_Click(object sender, EventArgs e) 7 { 8 DateTime t1 = DateTime.Now; 9 Response.Write("<br>start time:" + t1.ToString()); 10 Excel.Application excelkk = new Excel.Application(); 11 12 excelkk.Workbooks.Add(true); 13 int row = 2; 14 DataTable myTable = ds.Tables["[Sheet1$]"]; 15 for (int i = 0; i < myTable.Columns.Count; i++) 16 { 17 excelkk.Cells[1, 1 + i] = myTable.Columns[i].ColumnName.ToString(); 18 } 19 for (int i = 0; i < myTable.Rows.Count; i++) 20 { 21 for (int j = 0; j < myTable.Columns.Count; j++) 22 { 23 excelkk.Cells[row, j + 1] = myTable.Rows[i][j].ToString(); 24 } 25 26 row++; 27 } 28 29 30 //取得特定單元格的值 31 excelkk.Visible = true; 32 this.TextBoxChange.Text = excelkk.get_Range("A2", Type.Missing).Text.ToString(); 33 //表的單元格合并 34 Excel.Range range1 = excelkk.get_Range("A2", "D4"); 35 range1.Merge(Type.Missing); 36 37 38 39 40 //想表格中插入求和的值 41 Excel.Range range2 = excelkk.get_Range("B25", Type.Missing); 42 range2.Formula = "=SUM(B2:B24)"; 43 range2.Calculate(); 44 45 //進行宏的循環應用與單元格的刪除和添加,多個單元格默認宏自動操作。 46 Excel.Range range3 = excelkk.get_Range("B25","E25"); 47 range2.AutoFill(range3,Excel.XlAutoFillType.xlFillDefault); 48 //刪除表的指定行數操作 49 Excel.Range range7 = null; 50 range7 = excelkk.get_Range(excelkk.Cells[2, 2], excelkk.Cells[4, 4]); 51 range7.Select(); 52 range7.EntireRow.Delete(Excel.XlDirection.xlUp); 53 54 //獲取最大用過的行數 55 Excel.Worksheet wsheet1 = (Excel.Worksheet)excelkk.Worksheets.get_Item(1); 56 int n =wsheet1.UsedRange.Cells.Columns.Count; 57 Response.Write(n.ToString() + "<br>"); 58 //MessageBox.Show(n.ToString()); 59 n = wsheet1.UsedRange.Cells.Rows.Count; 60 Response.Write(n.ToString() + "<br>"); 61 //MessageBox.Show(n.ToString()); 62 //數據的複製 63 Excel.Range range4 = excelkk.get_Range("A2", "B25"); 64 Excel.Range range5 = excelkk.get_Range("E3", "F25"); 65 //range4.get_Offset(1,4).Select(); 66 range4.Copy(range5); 67 //停用警告信息 68 excelkk.DisplayAlerts = false; 69 GC.Collect(); 70 71 } 72 73 74 單個sheet里求和: 75 Excel.Range range2 = excelkk.get_Range("B25", Type.Missing); 76 range2.Formula = "=SUM(B2:B24)"; 77 range2.Calculate(); 78 79 跨sheet求和: 80 Excel.Worksheet wsheet1 = (Excel.Worksheet)excelSql.Worksheets.get_Item(1); 81 Excel.Range range3 =wsheet1.get_Range("A23", Type.Missing); 82 range3.Formula = "=Sheet3!B8+Sheet3!B12"; 83 range3.Calculate(); 84
取自:http://www.cnblogs.com/MR_ke/archive/2010/03/02/1676210.html