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omegapro/PowerTools/Classes/SpreadSheetTableAccessor.cs
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180
omegapro/PowerTools/Classes/SpreadSheetTableAccessor.cs
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/***************************************************************************
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Copyright (c) Microsoft Corporation 2011.
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This code is licensed using the Microsoft Public License (Ms-PL). The text of the license can be found here:
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http://www.microsoft.com/resources/sharedsource/licensingbasics/publiclicense.mspx
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***************************************************************************/
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using System.Collections.Generic;
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using System.Linq;
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using System.Xml.Linq;
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using DocumentFormat.OpenXml.Packaging;
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using System;
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using System.Xml;
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namespace OpenXmlPowerTools
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{
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/// <summary>
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/// Class for working with the Table Definition Part for a SpreadsheetML document
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/// </summary>
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public class SpreadSheetTableAccessor
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{
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private static XNamespace ns;
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private static XNamespace relationshipns;
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/// <summary>
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/// Static constructor
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/// </summary>
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static SpreadSheetTableAccessor()
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{
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ns = "http://schemas.openxmlformats.org/spreadsheetml/2006/main";
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relationshipns = "http://schemas.openxmlformats.org/officeDocument/2006/relationships";
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}
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/// <summary>
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/// Method for adding a new table definition part
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/// </summary>
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/// <param name="worksheet">Worksheet to add the table to</param>
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/// <param name="tableStyle">Style to be assigned to the table</param>
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/// <param name="useHeaders">Set a header row</param>
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/// <param name="fromColumn">Initial column for table</param>
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/// <param name="toColumn">Final column for table</param>
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/// <param name="fromRow">Intial row for table</param>
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/// <param name="toRow">Final row for table</param>
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public static OpenXmlPowerToolsDocument Add(SmlDocument doc, string worksheetName, string tableStyle, bool useHeaders, short fromColumn, short toColumn, int fromRow, int toRow)
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{
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using (OpenXmlMemoryStreamDocument streamDoc = new OpenXmlMemoryStreamDocument(doc))
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{
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using (SpreadsheetDocument document = streamDoc.GetSpreadsheetDocument())
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{
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//Getting the id for this table
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int tableId = GetNextTableId(document);
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//Set the table cell range
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string tableRange = string.Format("{0}{1}:{2}{3}", WorksheetAccessor.GetColumnId(fromColumn),
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fromRow,
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WorksheetAccessor.GetColumnId(toColumn),
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toRow);
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//Creating a new id for the relationship between the table definition part and the worksheet
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string tableRelationShipId = "rId" + Guid.NewGuid();
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//Create a new table definition part
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WorksheetPart worksheet = WorksheetAccessor.Get(document, worksheetName);
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TableDefinitionPart table = worksheet.AddNewPart<TableDefinitionPart>(tableRelationShipId);
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//string tableColumns = string.Empty;
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XElement tableColumnsXElement = new XElement(ns + "tableColumns", new XAttribute("count", (toColumn - fromColumn) + 1));
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//Get the name for table column elements from the first table row
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string[] tableHeaders = GetTableHeaders(document, worksheet, fromRow, fromColumn, toColumn);
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for (int i = 0; i <= (toColumn - fromColumn); i++)
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{
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//Create the markup for the SpreadsheetML table column elements
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tableColumnsXElement.Add(
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new XElement(ns + "tableColumn", new XAttribute("id", i + 1), new XAttribute("name", tableHeaders[i])));
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}
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XElement tableXElement =
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new XElement(ns + "table",
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new XAttribute("xmlns", ns), //default namespace
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new XAttribute("id", tableId),
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new XAttribute("name", "Table" + tableId.ToString()),
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new XAttribute("displayName", "Table" + tableId.ToString()),
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new XAttribute("ref", tableRange),
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new XAttribute("totalsRowShown", "0"));
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if (useHeaders)
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{
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tableXElement.Add(
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new XElement(ns + "autoFilter", new XAttribute("ref", tableRange)));
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}
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tableXElement.Add(tableColumnsXElement);
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tableXElement.Add(
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new XElement(ns + "tableStyleInfo",
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new XAttribute("name", tableStyle),
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new XAttribute("showFirstColumn", "0"),
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new XAttribute("showLastColumn", "0"),
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new XAttribute("showRowStripes", "0"),
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new XAttribute("showColumnStripes", "0")));
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//Write the markup to the Table Definition Part Stream
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XmlWriter tablePartStreamWriter = XmlWriter.Create(table.GetStream());
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tableXElement.WriteTo(tablePartStreamWriter);
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tablePartStreamWriter.Flush();
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tablePartStreamWriter.Close();
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//Create or modify the table parts definition at worksheet (for setting the relationship id with the new table)
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XDocument worksheetMarkup = worksheet.GetXDocument();
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//Look for the tableParts element at worksheet markup
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XElement tablePartsElement = worksheetMarkup.Root.Element(ns + "tableParts");
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if (tablePartsElement != null)
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{
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//tableParts elements does exist at worksheet markup
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//increment the tableParts count attribute value
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short tableCount = System.Convert.ToInt16(tablePartsElement.Attribute("count").Value);
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tablePartsElement.SetAttributeValue("count", tableCount++.ToString());
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}
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else
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{
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//tableParts does not exist at worksheet markup
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//create a new tableParts element
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tablePartsElement = new XElement(ns + "tableParts",
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new XAttribute(ns + "count", "1"));
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worksheetMarkup.Root.Add(tablePartsElement);
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}
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//create the tablePart element
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XElement tablePartEntryElement = new XElement(ns + "tablePart",
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new XAttribute(relationshipns + "id", tableRelationShipId));
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//add the new tablePart element to the worksheet tableParts element
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tablePartsElement.Add(tablePartEntryElement);
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worksheet.PutXDocument();
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}
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return streamDoc.GetModifiedDocument();
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}
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}
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/// <summary>
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/// Returns the id for the next table to add to the SpreadSheetML document
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/// </summary>
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/// <returns></returns>
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private static int GetNextTableId(SpreadsheetDocument document)
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{
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int tableCount = 0;
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foreach (WorksheetPart worksheet in document.WorkbookPart.WorksheetParts)
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{ //Loop the worksheets to sum up the tables defined in each one
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tableCount += worksheet.TableDefinitionParts.Count();
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}
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return ++tableCount;
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}
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/// <summary>
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/// Get the values for the table header row (table initial row)
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/// </summary>
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/// <param name="worksheet">Worksheet where the table is being defined</param>
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/// <param name="row">Table initial row</param>
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/// <param name="fromColumn">Table initial column</param>
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/// <param name="toColumn">Table final column</param>
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/// <returns></returns>
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private static string[] GetTableHeaders(SpreadsheetDocument document, WorksheetPart worksheet, int row, short fromColumn, short toColumn)
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{
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List<string> tableHeaders = new List<string>();
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for (short c = fromColumn; c <= toColumn; c++)
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{
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tableHeaders.Add(WorksheetAccessor.GetValue(document, worksheet, c, row));
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}
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return tableHeaders.ToArray<string>();
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}
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}
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}
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