C#實現(xiàn)Excel動態(tài)生成PivotTable
Excel 中的透視表對于數(shù)據(jù)分析來說,非常的方便,而且很多業(yè)務(wù)人員對于Excel的操作也是非常熟悉的,因此用Excel作為分析數(shù)據(jù)的界面,不失為一種很好的選擇。那么如何用C#從數(shù)據(jù)庫中抓取數(shù)據(jù),并在Excel 動態(tài)生成PivotTable呢?下面結(jié)合實例來說明。
一般來說,數(shù)據(jù)庫的設(shè)計都遵循規(guī)范化的原則,從而減少數(shù)據(jù)的冗余,但是對于數(shù)據(jù)分析來說,數(shù)據(jù)冗余能夠提高數(shù)據(jù)加載的速度,因此為了演示透視表,這里現(xiàn)在數(shù)據(jù)庫中建立一個視圖,將需要分析的數(shù)據(jù)整合到一個視圖中。如下圖所示:
數(shù)據(jù)源準備好后,我們先來建立一個web應(yīng)用程序,然后用NuGet加載Epplus程序包,如下圖所示:
在index.aspx前臺頁面中,編寫如下腳本:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="index.aspx.cs" Inherits="ExcelPivot.Web.index" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>Excel PivotTable</title> <link rel="stylesheet" type="text/css" href="css/style.css" /> </head> <body> <form id="form1" runat="server"> <div id="container"> <div id="contents"> <div id="post"> <header> <h1> Excel PivotTable </h1> </header> <div id="metro-array" style="display: inline-block;"> <div style="width: 230px; height: 230px; float: left; "> <a class="metro-tile" style="cursor: pointer; width: 230px; height: 110px; display: block; background-color:#ff0000; color: #fff; margin-bottom: 10px;"> <input type="button" runat="server" id="Button1" name="btn1" value="回款情況分析" onserverclick="btn1_ServerClick" style="background-color:transparent; color:white; font-size:16px;float:left; border:0; width:230px; height:110px; cursor:pointer;"/> </a> <a class="metro-tile" style="cursor: pointer; width: 230px; height: 110px; display: block; background-color:#ff6a00; color: #fff;"> <input type="button" runat="server" id="Button2" name="btn1" value="sampe1" onserverclick="btn1_ServerClick" style="background-color:transparent; color:white; font-size:16px;float:left; border:0; width:230px; height:110px; cursor:pointer;"/> </a> </div> <div style="width: 230px; height: 230px; float: left; margin-left: 10px"> <a class="metro-tile" style="cursor: pointer; width: 230px; height: 230px; display: block; background-color:#ffd800; color: #fff"> <input type="button" runat="server" id="btn1" name="btn1" value="sampe1" onserverclick="btn1_ServerClick" style="background-color:transparent; color:white; font-size:16px;float:left; border:0; width:230px; height:230px; cursor:pointer;"/> </a> </div> <div style="width: 230px; height: 230px; float: left; margin-left: 10px"> <a class="metro-tile" style="cursor: pointer; width: 230px; height: 110px; display: block; background-color:#0094ff; color: #fff; margin-bottom: 10px;"> <input type="button" runat="server" id="Button3" name="btn1" value="sampe1" onserverclick="btn1_ServerClick" style="background-color:transparent; color:white; font-size:16px;float:left; border:0; width:230px; height:110px; cursor:pointer;"/> </a> <a class="metro-tile" style="cursor: pointer; width: 110px; height: 110px; margin-right: 10px; display: block; float: left; background-color: #4800ff; color: #fff;"> <input type="button" runat="server" id="Button4" name="btn1" value="sampe1" onserverclick="btn1_ServerClick" style="background-color:transparent; color:white; font-size:16px;float:left; border:0; width:110px; height:110px; cursor:pointer;"/> </a> <a class="metro-tile" style="cursor: pointer; width: 110px; height: 110px; display: block; background-color: #b200ff; float: right; color: #fff;"> <input type="button" runat="server" id="Button5" name="btn1" value="sampe1" onserverclick="btn1_ServerClick" style="background-color:transparent; color:white; font-size:16px;float:left; border:0; width:110px; height:110px; cursor:pointer;"/> </a> </div> </div> </div> </div> </div> </form> </body> <script src="js/tileJs.js" type="text/javascript"></script> </html>
其中 TileJs是一個開源的構(gòu)建類似win8 Metro風(fēng)格的javascript庫。
編寫后臺腳本:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using OfficeOpenXml; using OfficeOpenXml.Table; using OfficeOpenXml.ConditionalFormatting; using OfficeOpenXml.Style; using OfficeOpenXml.Utils; using OfficeOpenXml.Table.PivotTable; using System.IO; using System.Data.SqlClient; using System.Data; namespace ExcelPivot.Web { public partial class index : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } private DataTable getDataSource() { //createDataTable(); //return ProductInfo; SqlConnection conn = new SqlConnection(); conn.ConnectionString = "Data Source=.;Initial Catalog=olap;Persist Security Info=True;User ID=sa;Password=sa"; conn.Open(); SqlDataAdapter ada = new SqlDataAdapter("select * from v_pm_olap_test", conn); DataSet ds = new DataSet(); ada.Fill(ds); return ds.Tables[0]; } protected void btn1_ServerClick(object sender, EventArgs e) { try { DataTable table = getDataSource(); string path = "_demo_" + System.Guid.NewGuid().ToString().Replace("-", "_") + ".xls"; //string path = "_demo.xls"; FileInfo fileInfo = new FileInfo(path); var excel = new ExcelPackage(fileInfo); var wsPivot = excel.Workbook.Worksheets.Add("Pivot"); var wsData = excel.Workbook.Worksheets.Add("Data"); wsData.Cells["A1"].LoadFromDataTable(table, true, OfficeOpenXml.Table.TableStyles.Medium6); if (table.Rows.Count != 0) { foreach (DataColumn col in table.Columns) { if (col.DataType == typeof(System.DateTime)) { var colNumber = col.Ordinal + 1; var range = wsData.Cells[2, colNumber, table.Rows.Count + 1, colNumber]; range.Style.Numberformat.Format = "yyyy-MM-dd"; } else { } } } var dataRange = wsData.Cells[wsData.Dimension.Address.ToString()]; dataRange.AutoFitColumns(); var pivotTable = wsPivot.PivotTables.Add(wsPivot.Cells["A1"], dataRange, "Pivot"); pivotTable.MultipleFieldFilters = true; pivotTable.RowGrandTotals = true; pivotTable.ColumGrandTotals = true; pivotTable.Compact = true; pivotTable.CompactData = true; pivotTable.GridDropZones = false; pivotTable.Outline = false; pivotTable.OutlineData = false; pivotTable.ShowError = true; pivotTable.ErrorCaption = "[error]"; pivotTable.ShowHeaders = true; pivotTable.UseAutoFormatting = true; pivotTable.ApplyWidthHeightFormats = true; pivotTable.ShowDrill = true; pivotTable.FirstDataCol = 3; //pivotTable.RowHeaderCaption = "行"; //row field var field004 = pivotTable.Fields["銷售客戶經(jīng)理"]; pivotTable.RowFields.Add(field004); var field001 = pivotTable.Fields["項目簡稱"]; pivotTable.RowFields.Add(field001); //field001.ShowAll = false; //column field var field002 = pivotTable.Fields["年"]; pivotTable.ColumnFields.Add(field002); field002.Sort = OfficeOpenXml.Table.PivotTable.eSortType.Ascending; var field005 = pivotTable.Fields["月"]; pivotTable.ColumnFields.Add(field005); field005.Sort = OfficeOpenXml.Table.PivotTable.eSortType.Ascending; //data field var field003 = pivotTable.Fields["回款金額"]; field003.Sort = OfficeOpenXml.Table.PivotTable.eSortType.Descending; pivotTable.DataFields.Add(field003); pivotTable.RowGrandTotals = false; pivotTable.ColumGrandTotals = false; //save file excel.Save(); //open excel file string file = @"C:\Windows\explorer.exe"; System.Diagnostics.Process.Start(file, path); } catch (Exception ex) { Response.Write(ex.Message); } } } }
編譯運行,如下圖所示:
單擊 [回款情況分析],稍等片刻,會打開Excel,并自動生成透視表,如下圖所示:
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