/// <summary> /// Adds numeric cell identifiers so that it is easier to work out position of cells /// Private method, for internal use only! /// </summary> private void AddNumericCellIDs(XmlDocument worksheetDoc) { // process each row foreach (XmlNode rowNode in worksheetDoc.SelectNodes("//d:sheetData/d:row", NameSpaceManager)) { // remove the spans attribute. Excel simply recreates it when the file is opened. var attr = (XmlAttribute)rowNode.Attributes.GetNamedItem("spans"); //if (attr != null) //{ // rowNode.Attributes.Remove(attr); //} //int row = Convert.ToInt32(rowNode.Attributes.GetNamedItem("r").Value); // process each cell in current row foreach (XmlNode colNode in rowNode.SelectNodes("./d:c", NameSpaceManager)) { var cellAddressAttr = (XmlAttribute)colNode.Attributes.GetNamedItem("r"); if (cellAddressAttr != null) { var cellAddress = cellAddressAttr.Value; var col = ExcelCell.GetColumnNumber(cellAddress); attr = worksheetDoc.CreateAttribute(tempColumnNumberTag); if (attr != null) { attr.Value = col.ToString(); colNode.Attributes.Append(attr); // remove all cell Addresses like A1, A2, A3 etc. colNode.Attributes.Remove(cellAddressAttr); } } } } }
/// <summary> /// Inserts a new row into the spreadsheet. Existing rows below the insersion position are /// shifted down. All formula are updated to take account of the new row. /// </summary> /// <param name="position">The position of the new row</param> public void InsertRow(int position) { // create the new row element var rowElement = WorksheetXml.CreateElement("row", ExcelPackage.schemaMain); rowElement.Attributes.Append(WorksheetXml.CreateAttribute("r")); rowElement.Attributes["r"].Value = position.ToString(); var sheetDataNode = WorksheetXml.SelectSingleNode("//d:sheetData", NameSpaceManager); if (sheetDataNode != null) { var renumberFrom = 1; var nodes = sheetDataNode.ChildNodes; var nodeCount = nodes.Count; XmlNode insertAfterRowNode = null; var insertAfterRowNodeID = 0; for (var i = 0; i < nodeCount; i++) { var currentRowID = int.Parse(nodes[i].Attributes["r"].Value); if (currentRowID < position) { insertAfterRowNode = nodes[i]; insertAfterRowNodeID = i; } if (currentRowID >= position) { renumberFrom = currentRowID; break; } } // update the existing row ids for (var i = insertAfterRowNodeID + 1; i < nodeCount; i++) { var currentRowID = int.Parse(nodes[i].Attributes["r"].Value); if (currentRowID >= renumberFrom) { nodes[i].Attributes["r"].Value = Convert.ToString(currentRowID + 1); // now update any formula that are in the row var formulaNodes = nodes[i].SelectNodes("./d:c/d:f", NameSpaceManager); foreach (XmlNode formulaNode in formulaNodes) { formulaNode.InnerText = ExcelCell.UpdateFormulaReferences(formulaNode.InnerText, 1, 0, position, 0); } } } // now insert the new row if (insertAfterRowNode != null) { sheetDataNode.InsertAfter(rowElement, insertAfterRowNode); } } }
/// <summary> /// Replaces the numeric cell identifiers we inserted with AddNumericCellIDs with the traditional /// A1, A2 cell identifiers that Excel understands. /// Private method, for internal use only! /// </summary> private void ReplaceNumericCellIDs() { var maxColumn = 0; // process each row foreach (XmlNode rowNode in WorksheetXml.SelectNodes("//d:sheetData/d:row", NameSpaceManager)) { var row = Convert.ToInt32(rowNode.Attributes.GetNamedItem("r").Value); var count = 0; // process each cell in current row foreach (XmlNode colNode in rowNode.SelectNodes("./d:c", NameSpaceManager)) { var colNumber = (XmlAttribute)colNode.Attributes.GetNamedItem(tempColumnNumberTag); if (colNumber != null) { count++; if (count > maxColumn) { maxColumn = count; } var col = Convert.ToInt32(colNumber.Value); var cellAddress = ExcelCell.GetColumnLetter(col) + row; var attr = WorksheetXml.CreateAttribute("r"); if (attr != null) { attr.Value = cellAddress; // the cellAddress needs to be the first attribute, otherwise Excel complains if (colNode.Attributes.Count == 0) { colNode.Attributes.Append(attr); } else { colNode.Attributes.InsertBefore(attr, (XmlAttribute)colNode.Attributes.Item(0)); } } // remove all numeric cell addresses added by AddNumericCellIDs colNode.Attributes.Remove(colNumber); } } } // process each row and add the spans attribute // TODO: Need to add proper spans handling. //foreach (XmlNode rowNode in XmlDoc.SelectNodes("//d:sheetData/d:row", NameSpaceManager)) //{ // // we must add or update the "spans" attribute of each row // XmlAttribute spans = (XmlAttribute)rowNode.Attributes.GetNamedItem("spans"); // if (spans == null) // { // spans = XmlDoc.CreateAttribute("spans"); // rowNode.Attributes.Append(spans); // } // spans.Value = "1:" + maxColumn.ToString(); //} }
/// <summary> /// Deletes the specified row from the worksheet. /// If shiftOtherRowsUp=true then all formula are updated to take account of the deleted row. /// </summary> /// <param name="rowToDelete">The number of the row to be deleted</param> /// <param name="shiftOtherRowsUp">Set to true if you want the other rows renumbered so they all move up</param> public void DeleteRow(int rowToDelete, bool shiftOtherRowsUp) { var sheetDataNode = WorksheetXml.SelectSingleNode("//d:sheetData", NameSpaceManager); if (sheetDataNode != null) { var nodes = sheetDataNode.ChildNodes; var nodeCount = nodes.Count; var rowNodeID = 0; XmlNode rowNode = null; for (var i = 0; i < nodeCount; i++) { var currentRowID = int.Parse(nodes[i].Attributes["r"].Value); if (currentRowID == rowToDelete) { rowNodeID = i; rowNode = nodes[i]; } } if (shiftOtherRowsUp) { // update the existing row ids for (var i = rowNodeID + 1; i < nodeCount; i++) { var currentRowID = int.Parse(nodes[i].Attributes["r"].Value); if (currentRowID > rowToDelete) { nodes[i].Attributes["r"].Value = Convert.ToString(currentRowID - 1); // now update any formula that are in the row var formulaNodes = nodes[i].SelectNodes("./d:c/d:f", NameSpaceManager); foreach (XmlNode formulaNode in formulaNodes) { formulaNode.InnerText = ExcelCell.UpdateFormulaReferences(formulaNode.InnerText, -1, 0, rowToDelete, 0); } } } } // delete the row if (rowNode != null) { sheetDataNode.RemoveChild(rowNode); } } }
/// <summary> /// Creates a shared formula based on the formula already in startCell /// Essentially this supports the formula attributes such as t="shared" ref="B2:B4" si="0" /// as per Brian Jones: Open XML Formats blog. See /// http://blogs.msdn.com/brian_jones/archive/2006/11/15/simple-spreadsheetml-file-part-2-of-3.aspx /// </summary> /// <param name="startCell">The cell containing the formula</param> /// <param name="endCell">The end cell (i.e. end of the range)</param> public void CreateSharedFormula(ExcelCell startCell, ExcelCell endCell) { XmlElement formulaElement; var formula = startCell.Formula; if (formula == "") { throw new Exception("CreateSharedFormula Error: startCell does not contain a formula!"); } // find or create a shared formula ID var sharedID = -1; foreach (XmlNode node in WorksheetXml.SelectNodes("//d:sheetData/d:row/d:c/d:f/@si", NameSpaceManager)) { var curID = int.Parse(node.Value); if (curID > sharedID) { sharedID = curID; } } sharedID++; // first value must be zero for (var row = startCell.Row; row <= endCell.Row; row++) { for (var col = startCell.Column; col <= endCell.Column; col++) { var cell = Cell(row, col); // to force Excel to re-calculate the formula, we must remove the value cell.RemoveValue(); formulaElement = (XmlElement)cell.Element.SelectSingleNode("./d:f", NameSpaceManager); if (formulaElement == null) { formulaElement = cell.AddFormulaElement(); } formulaElement.SetAttribute("t", "shared"); formulaElement.SetAttribute("si", sharedID.ToString()); } } // finally add the shared cell range to the startCell formulaElement = (XmlElement)startCell.Element.SelectSingleNode("./d:f", NameSpaceManager); formulaElement.SetAttribute("ref", string.Format("{0}:{1}", startCell.CellAddress, endCell.CellAddress)); }
/// <summary> /// Inserts conditional formatting for the cell range. /// Currently only supports the dataBar style. /// </summary> /// <param name="startCell"></param> /// <param name="endCell"></param> /// <param name="color"></param> public void CreateConditionalFormatting(ExcelCell startCell, ExcelCell endCell, string color) { var formatNode = WorksheetXml.SelectSingleNode("//d:conditionalFormatting", NameSpaceManager); if (formatNode == null) { formatNode = WorksheetXml.CreateElement("conditionalFormatting", ExcelPackage.schemaMain); var prevNode = WorksheetXml.SelectSingleNode("//d:mergeCells", NameSpaceManager) ?? WorksheetXml.SelectSingleNode("//d:sheetData", NameSpaceManager); WorksheetXml.DocumentElement.InsertAfter(formatNode, prevNode); } var attr = formatNode.Attributes["sqref"]; if (attr == null) { attr = WorksheetXml.CreateAttribute("sqref"); formatNode.Attributes.Append(attr); } attr.Value = string.Format("{0}:{1}", startCell.CellAddress, endCell.CellAddress); var node = formatNode.SelectSingleNode("./d:cfRule", NameSpaceManager); if (node == null) { node = WorksheetXml.CreateElement("cfRule", ExcelPackage.schemaMain); formatNode.AppendChild(node); } attr = node.Attributes["type"]; if (attr == null) { attr = WorksheetXml.CreateAttribute("type"); node.Attributes.Append(attr); } attr.Value = "dataBar"; attr = node.Attributes["priority"]; if (attr == null) { attr = WorksheetXml.CreateAttribute("priority"); node.Attributes.Append(attr); } attr.Value = "1"; // the following is poor code, but just an example!!! XmlNode databar = WorksheetXml.CreateElement("databar", ExcelPackage.schemaMain); node.AppendChild(databar); XmlNode child = WorksheetXml.CreateElement("cfvo", ExcelPackage.schemaMain); databar.AppendChild(child); attr = WorksheetXml.CreateAttribute("type"); child.Attributes.Append(attr); attr.Value = "min"; attr = WorksheetXml.CreateAttribute("val"); child.Attributes.Append(attr); attr.Value = "0"; child = WorksheetXml.CreateElement("cfvo", ExcelPackage.schemaMain); databar.AppendChild(child); attr = WorksheetXml.CreateAttribute("type"); child.Attributes.Append(attr); attr.Value = "max"; attr = WorksheetXml.CreateAttribute("val"); child.Attributes.Append(attr); attr.Value = "0"; child = WorksheetXml.CreateElement("color", ExcelPackage.schemaMain); databar.AppendChild(child); attr = WorksheetXml.CreateAttribute("rgb"); child.Attributes.Append(attr); attr.Value = color; }