C#多种操作excel的方法比较

  我们在做excel资料的时候,通常有以下方法。

  一.导入导出excel常用方法:

  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

  string str = @"Data Source=IT-428E4EA4B0C7SQLEXPRESS;Initial Catalog=TestBase;Integrated Security=True";

  SqlConnection conn = new SqlConnection(str);

  conn.Open();

  int n = 0;

  for (int i = 1; i < 20; i++)

  {

  if (n > 3)

  break;

  else

  if (msheet.Cells.get_Range("A" + i, Type.Missing).Text.ToString() == "" && n <= 3)

  { n++; }

  else

  {

  //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

  excuteSql(msheet.Cells.get_Range("B" + i, Type.Missing).Text.ToString(),

  msheet.Cells.get_Range("B" + (i + 1), Type.Missing).Text.ToString(),

  msheet.Cells.get_Range("B" + (i + 2), Type.Missing).Text.ToString(),

  conn);

  i = i + 3;

  }

  }

  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倒入数据库

  // block copy to DB from Excel

  //By xijun,

  //step create an excel file C:Inetpubwwwroot est.xls , fill cell(1,1) with "Data",cell(1,2) with "name"

  //step create table named "Data" with column ("data","name") in your DB

  //there the code below:

  DateTime t1 = DateTime.Now;

  Response.Write("
start time:" + t1.ToString());

  string ExcelFile = @"C:_Hub_Report.xls";

  string excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFile + ";Extended Properties='Excel.0;HDR=YES;IMEX=1'";

  using (OleDbConnection excelConnection = new OleDbConnection(excelConnectionString))

  {

  excelConnection.Open();

  //Getting source data

  //非空讀入數據

  OleDbCommand command = new OleDbCommand("Select [Region],[CustomerPN],[RMA],[Date],[QTY],[Return/Pull] FROM [_Hub_Report$] ", excelConnection);

  // Initialize SqlBulkCopy object

  using (OleDbDataReader dr = command.ExecuteReader())

  {

  // Copy data to destination

  string sqlConnectionString = @"Data Source=MININT-GPHNASQLEXPRESS;Initial Catalog=GDS_Service;Integrated Security=True";

  using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnectionString))

  {

  bulkCopy.DestinationTableName = "GDS_Hub_data";

  //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。

  bulkCopy.ColumnMappings.Add("Region", "region");

  bulkCopy.ColumnMappings.Add("CustomerPN", "customer_item_number");

  bulkCopy.ColumnMappings.Add("RMA", "Rma");

  bulkCopy.ColumnMappings.Add("Date", "date");

  bulkCopy.ColumnMappings.Add("QTY", "Qty_1");

  bulkCopy.ColumnMappings.Add("Return/Pull", "return_pull");

  //bcp.BatchSize =;//每次传输的行数

  //bcp.NotifyAfter =;//进度提示的行数

  bulkCopy.BatchSize =;

  bulkCopy.NotifyAfter =;

  bulkCopy.WriteToServer((IDataReader)dr);

  }

  }

  //Closing connection

  excelConnection.Close();

  }

  DateTime t2 = DateTime.Now;

  Response.Write("
End time:" + t2.ToString());

  Response.Write("
use time:" + ((TimeSpan)(t2 - t1)).Milliseconds.ToString() + " Milliseconds");

  Response.Write("
inser record count :");

  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。

  public string query_table_getdata(string sourpath)

  {

  string str_path = sourpath.Substring(0, sourpath.Length - 22);

  str_path = str_path + "basic.xls";

  Excel.QueryTables m_objQryTables = null;

  Excel.QueryTable m_objQryTable = null;

  Excel.Application m_objExcel = null;

  Excel.Workbooks m_objBooks = null;

  Excel.Workbook m_objBook = null;

  Excel.Sheets m_objSheets = null;

  Excel.Worksheet m_objSheet = null;

  Excel.Range m_objRange = null;

  m_objExcel = new Excel.Application();

  //try

  //{

  m_objBooks = m_objExcel.Workbooks;

  m_objBooks.Open(sourpath, Type.Missing, Type.Missing, Type.Missing, Type.Missing,

  Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

  m_objBook = (Excel.Workbook)m_objBooks.get_Item(1);

  m_objSheets = (Excel.Sheets)m_objBook.Worksheets;

  m_objSheet = (Excel.Worksheet)m_objSheets.get_Item(1);

  m_objRange = m_objSheet.get_Range("A2", Type.Missing);

  m_objQryTables = m_objSheet.QueryTables;

  string sqlstr = "SELECT [day01],[day02],[day03],[day04],[day05],[day06],[day07],[day08],[day09],[day10],[day11],[day12],[day13],[day14]";

  sqlstr += ",[week01] ,[week02],[week03],[week04],[week05],[week06],[week07],[week08],[week09],[week10],[week11],[week12],[week13],[week14]";

  sqlstr += ",[week15],[week16],[week17],[week18],[week19],[week20],[week21],[week22],[week23],[week24]";

  sqlstr += " FROM [GDS_Service].[dbo].[GDS_Service_Report_Base] order by groupID ,id";

  //可以放在配置文件里

  string conn = @"Provider=SQLOLEDB.1;Data Source=MININT-G87PHNASQLEXPRESS;uid=xijun_ke;Password=12345678;

  Initial Catalog=GDS_Service;Persist Security Info=False;";

  m_objQryTable = (Excel.QueryTable)m_objQryTables.Add("OLEDB;" + conn, m_objRange, sqlstr);

  m_objQryTable.RefreshStyle = Excel.XlCellInsertionMode.xlInsertEntireRows;

  m_objQryTable.Refresh(false);

  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);

  m_objBook.Close(false, Type.Missing, Type.Missing);

  //}

  //catch (Exception ee)

  //{

  // mp.WriteLog(ee.ToString());

  //}

  //finally

  //{

  m_objExcel.Quit();

  GC.Collect();

  //}

  return str_path;

  }

  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:

  ///

  /// 讀取excel數據和插入公式

  ///

  ///

  ///

  protected void Button2_Click(object sender, EventArgs e)

  {

  DateTime t1 = DateTime.Now;

  Response.Write("
start time:" + t1.ToString());

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

  excelkk.Workbooks.Add(true);

  int row = 2;

  DataTable myTable = ds.Tables["[Sheet1$]"];

  for (int i = 0; i < myTable.Columns.Count; i++)

  {

  excelkk.Cells[1, 1 + i] = myTable.Columns[i].ColumnName.ToString();

  }

  for (int i = 0; i < myTable.Rows.Count; i++)

  {

  for (int j = 0; j < myTable.Columns.Count; j++)

  {

  excelkk.Cells[row, j + 1] = myTable.Rows[i][j].ToString();

  }

  row++;

  }

  //取得特定單元格的值

  excelkk.Visible = true;

  this.TextBoxChange.Text = excelkk.get_Range("A2", Type.Missing).Text.ToString();

  //表的單元格合并

  Excel.Range range1 = excelkk.get_Range("A2", "D4");

  range1.Merge(Type.Missing);

  //想表格中插入求和的值

  Excel.Range range2 = excelkk.get_Range("B25", Type.Missing);

  range2.Formula = "=SUM(B2:B24)";

  range2.Calculate();

  //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。

  Excel.Range range3 = excelkk.get_Range("B25","E25");

  range2.AutoFill(range3,Excel.XlAutoFillType.xlFillDefault);

  //刪除表的指定行數操作

  Excel.Range range7 = null;

  range7 = excelkk.get_Range(excelkk.Cells[2, 2], excelkk.Cells[4, 4]);

  range7.Select();

  range7.EntireRow.Delete(Excel.XlDirection.xlUp);

  //獲取最大用過的行數

  Excel.Worksheet wsheet1 = (Excel.Worksheet)excelkk.Worksheets.get_Item(1);

  int n =wsheet1.UsedRange.Cells.Columns.Count;

  Response.Write(n.ToString() + "
");

  //MessageBox.Show(n.ToString());

  n = wsheet1.UsedRange.Cells.Rows.Count;

  Response.Write(n.ToString() + "
");

  //MessageBox.Show(n.ToString());

  //數據的複製

  Excel.Range range4 = excelkk.get_Range("A2", "B25");

  Excel.Range range5 = excelkk.get_Range("E3", "F25");

  //range4.get_Offset(1,4).Select();

  range4.Copy(range5);

  //停用警告信息

  excelkk.DisplayAlerts = false;

  GC.Collect();

  }

  單個sheet里求和:

  Excel.Range range2 = excelkk.get_Range("B25", Type.Missing);

  range2.Formula = "=SUM(B2:B24)";

  range2.Calculate();

  跨sheet求和:

  Excel.Worksheet wsheet1 = (Excel.Worksheet)excelSql.Worksheets.get_Item(1);

  Excel.Range range3 =wsheet1.get_Range("A23", Type.Missing);

  range3.Formula = "=Sheet3!B8+Sheet3!B12";

  range3.Calculate();

  虽然我们拥有强大的NPOI,不过我还是写出来,希望对大家理解office有一定的用处。

  以上所述是小编给大家介绍的C#多种操作excel的方法比较,希望对大家有所帮助。在此也非常感谢大家对脚本之家网站的支持!

  您可能感兴趣的文章: