C# EPPlus 数据透视表/图表
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原文地址: http://stackoverflow.com/questions/11650080/
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EPPlus pivot tables/charts
提问by user1468537
I've been using EPPlus for .net for a while now but only for simple data manipulation. Are there any examples somewhere on how to use it to create pivot tables/charts? It seems to support it as I can see PivotTable in the intellisense but just unsure on the syntax.
我已经将 EPPlus 用于 .net 一段时间了，但仅用于简单的数据操作。是否有关于如何使用它来创建数据透视表/图表的示例？它似乎支持它，因为我可以在智能感知中看到数据透视表，但只是不确定语法。
I could only find the likes of pie/bar charts in the samples provided.
我只能在提供的示例中找到饼图/条形图之类的。
回答by Tim Schmelter
Here's the code of a pivot i've created recently, maybe it does help:
这是我最近创建的枢轴代码，也许它确实有帮助：
DataTable table = getDataSource();
FileInfo fileInfo = new FileInfo(path);
var excel = new ExcelPackage(fileInfo);
var wsData = excel.Workbook.Worksheets.Add("Data-Worksheetname");
var wsPivot = excel.Workbook.Worksheets.Add("Pivot-Worksheetname");
wsData.Cells["A1"].LoadFromDataTable(table, true, OfficeOpenXml.Table.TableStyles.Medium6);
if (table.Rows.Count != 0)
{
foreach (DataColumn col in table.Columns)
{
// format all dates in german format (adjust accordingly)
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 = "dd.MM.yyyy";
}
}
}
var dataRange = wsData.Cells[wsData.Dimension.Address.ToString()];
dataRange.AutoFitColumns();
var pivotTable = wsPivot.PivotTables.Add(wsPivot.Cells["A3"], dataRange, "Pivotname");
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 = "Claims";
var modelField = pivotTable.Fields["Model"];
pivotTable.PageFields.Add(modelField);
modelField.Sort = OfficeOpenXml.Table.PivotTable.eSortType.Ascending;
var countField = pivotTable.Fields["Claims"];
pivotTable.DataFields.Add(countField);
var countryField = pivotTable.Fields["Country"];
pivotTable.RowFields.Add(countryField);
var gspField = pivotTable.Fields["GSP / DRSL"];
pivotTable.RowFields.Add(gspField);
var oldStatusField = pivotTable.Fields["Old Status"];
pivotTable.ColumnFields.Add(oldStatusField);
var newStatusField = pivotTable.Fields["New Status"];
pivotTable.ColumnFields.Add(newStatusField);
var submittedDateField = pivotTable.Fields["Claim Submitted Date"];
pivotTable.RowFields.Add(submittedDateField);
submittedDateField.AddDateGrouping(OfficeOpenXml.Table.PivotTable.eDateGroupBy.Months | OfficeOpenXml.Table.PivotTable.eDateGroupBy.Days);
var monthGroupField = pivotTable.Fields.GetDateGroupField(OfficeOpenXml.Table.PivotTable.eDateGroupBy.Months);
monthGroupField.ShowAll = false;
var dayGroupField = pivotTable.Fields.GetDateGroupField(OfficeOpenXml.Table.PivotTable.eDateGroupBy.Days);
dayGroupField.ShowAll = false;
excel.Save();
回答by Ted H.
I've produced a similar solution from Tim's Answer. First, I defined a simple interface that I use as part of my export methods:
我从 Tim's Answer 中生成了一个类似的解决方案。首先，我定义了一个简单的接口，用作导出方法的一部分：
public interface IPivotTableCreator
{
void CreatePivotTable(
OfficeOpenXml.ExcelPackage pkg, // reference to the destination book
string tableName, // "tab" name used to generate names for related items
string pivotRangeName); // Named range in the Workbook refers to data
}
Then I implemented a simple class that hold the variable values and procedural code to do the work:
然后我实现了一个简单的类来保存变量值和程序代码来完成工作：
public class SimplePivotTable : IPivotTableCreator
{
List<string> _GroupByColumns;
List<string> _SummaryColumns;
/// <summary>
/// Constructor
/// </summary>
public SimplePivotTable(string[] groupByColumns, string[] summaryColumns)
{
_GroupByColumns = new List<string>(groupByColumns);
_SummaryColumns = new List<string>(summaryColumns);
}
/// <summary>
/// Call-back handler that builds simple PivatTable in Excel
/// http://stackoverflow.com/questions/11650080/epplus-pivot-tables-charts
/// </summary>
public void CreatePivotTable(OfficeOpenXml.ExcelPackage pkg, string tableName, string pivotRangeName)
{
string pageName = "Pivot-" + tableName.Replace(" ", "");
var wsPivot = pkg.Workbook.Worksheets.Add(pageName);
pkg.Workbook.Worksheets.MoveBefore(PageName, tableName);
var dataRange = pkg.Workbook./*Worksheets[tableName].*/Names[pivotRangeName];
var pivotTable = wsPivot.PivotTables.Add(wsPivot.Cells["C3"], dataRange, "Pivot_" + tableName.Replace(" ", ""));
pivotTable.ShowHeaders = true;
pivotTable.UseAutoFormatting = true;
pivotTable.ApplyWidthHeightFormats = true;
pivotTable.ShowDrill = true;
pivotTable.FirstHeaderRow = 1; // first row has headers
pivotTable.FirstDataCol = 1; // first col of data
pivotTable.FirstDataRow = 2; // first row of data
foreach (string row in _GroupByColumns)
{
var field = pivotTable.Fields[row];
pivotTable.RowFields.Add(field);
field.Sort = eSortType.Ascending;
}
foreach (string column in _SummaryColumns)
{
var field = pivotTable.Fields[column];
ExcelPivotTableDataField result = pivotTable.DataFields.Add(field);
}
pivotTable.DataOnRows = false;
}
}
Then I create an instance of my SimplePivotTablecreator class:
然后我创建我的SimplePivotTable创建者类的一个实例：
IPivotTableCreator ptCreator = new SimplePivotTable(
new string[] { "OrganizationTitle", "GroupingTitle", "DetailTitle" }, /* collapsible rows */
new string[] { "Baseline", "Increase", "Decrease", "NetChange", "CurrentCount"}); /* summary columns */
I have a third class that currently exposes about six different methods to take one-or-more data sets (usually List objects) and turn each of the data sets into a worksheet of data with a named range for the data. Now, I'm adapting those export methods to allow me to generate Pivot Tables for any/all of those export methods. They all do something like this:
我有第三个类，它目前公开了大约六种不同的方法来获取一个或多个数据集（通常是 List 对象），并将每个数据集转换为具有数据命名范围的数据工作表。现在，我正在调整这些导出方法，以允许我为任何/所有这些导出方法生成数据透视表。他们都做这样的事情：
OfficeOpenXml.ExcelPackage pkg = new ExcelPackage();
ExportCollectionToExcel(pkg, tableName, dataset); // Create worksheet filled with data
// Creates a NamedRange of data
ptCreator.CreatePivotTable(pkg, tableName, GetPivotRangeName(tableName));
By using an interface, I leave open more opportunities (I think) to generate, for example, a different pivot table for multiple sheets. My basic SimplePivotTableclass just used for a single table with some specific assumptions, but it wouldn't be hard to put the configuration data into a dictionary keyed to the Table names.
通过使用一个界面，我留下了更多的机会（我认为）来为多个工作表生成不同的数据透视表。我的基本SimplePivotTable类仅用于具有一些特定假设的单个表，但将配置数据放入以表名称为键的字典中并不难。
Hope that helps someone.
希望能帮助某人。
