使用OpenXML写入现有的Excel文件
任何人都可以告诉我我的代码中缺less什么？ 它运行没有任何错误，但它不会写入我的Excel文件。 我只是试图把它写到我的电子表格的商业选项卡上的单元格A1。
我的代码如下：
using System; using System.Data; using Microsoft.SqlServer.Dts.Runtime; using System.Windows.Forms; using System.Collections.Generic; using System.ComponentModel; using System.Linq; using System.Text; using System.IO; using System.Reflection; using System.Data.OleDb; using DocumentFormat.OpenXml; using DocumentFormat.OpenXml.Packaging; using DocumentFormat.OpenXml.Spreadsheet; using System.Xml; using System.Diagnostics; namespace Application.Model { [Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute] public class TempCode : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase { string FilePath; string FileName; string FileExceptionsPath; string FileExceptionsName; string Exceptions = ""; public void Main() { try { FilePath = (string)Dts.Variables["FilePath"].Value; FileName = (string)Dts.Variables["User::FileName"].Value; FileExceptionsPath = (string)Dts.Variables["FileExceptionsPath"].Value; FileExceptionsName = (string)Dts.Variables["User::FileExceptionsName"].Value; Dts.Variables["User::FileAbsolutePath"].Value = (string)Dts.Variables["FilePath"].Value + (string)Dts.Variables["User::FileName"].Value; Dts.Variables["User::FileAbsoluteExceptionsPath"].Value = (string)Dts.Variables["FileExceptionsPath"].Value + (string)Dts.Variables["User::FileExceptionsName"].Value; CreateExcel(new Object(), new EventArgs()); Dts.TaskResult = (int)ScriptResults.Success; } catch (Exception ex) { Dts.Events.FireError(0, "File Task", ex.Message, String.Empty, 0); Dts.TaskResult = (int)ScriptResults.Failure; } } public void CreateExcel(object sender, EventArgs e) { Directory.CreateDirectory(FilePath); string fileTest = FilePath + FileName; if (File.Exists(fileTest)) { File.Delete(fileTest); } string templateTest = FilePath + "Test.xlsx"; CopyFile(templateTest, fileTest); UpdateCell(fileTest, "120", 1, "A"); if (Exceptions != "") { LogExceptions(FileExceptionsPath, FileExceptionsName, Exceptions); } } public void LogExceptions(string FileExceptionsPath, string FileExceptionsName, string data) { Directory.CreateDirectory(FileExceptionsPath); using (var writer = new StreamWriter(FileExceptionsPath + FileExceptionsName)) { List<string> exceptionsList = data.Split('~').ToList(); foreach (var ex in exceptionsList) { writer.WriteLine(ex, true); } } } private string CopyFile(string source, string dest) { string result = "Copied file"; try { File.Copy(source, dest, true); } catch (Exception ex) { result = ex.Message; } return result; } public static void UpdateCell(string docName, string text, uint rowIndex, string columnName) { using (SpreadsheetDocument spreadSheet = SpreadsheetDocument.Open(docName, true)) { WorksheetPart worksheetPart = GetWorksheetPartByName(spreadSheet, "Commercial"); if (worksheetPart != null) { Cell cell = GetCell(worksheetPart.Worksheet, columnName, rowIndex); cell.CellValue = new CellValue(text); cell.DataType = new EnumValue<CellValues>(CellValues.Number); worksheetPart.Worksheet.Save(); } spreadSheet.WorkbookPart.Workbook.Save(); } } private static WorksheetPart GetWorksheetPartByName(SpreadsheetDocument document, string sheetName) { IEnumerable<Sheet> sheets = document.WorkbookPart.Workbook.GetFirstChild<Sheets>(). Elements<Sheet>().Where(s => s.Name == sheetName); if (sheets.Count() == 0) { return null; } string relationshipId = sheets.First().Id.Value; WorksheetPart worksheetPart = (WorksheetPart)document.WorkbookPart.GetPartById(relationshipId); return worksheetPart; } private static Cell GetCell(Worksheet worksheet, string columnName, uint rowIndex) { Row row; string cellReference = columnName + rowIndex; if (worksheet.Elements<Row>().Where(r => r.RowIndex == rowIndex).Count() != 0) row = worksheet.GetFirstChild<SheetData>().Elements<Row>().Where(r => r.RowIndex == rowIndex).FirstOrDefault(); else { row = new Row() { RowIndex = rowIndex }; worksheet.Append(row); } if (row == null) return null; if (row.Elements<Cell>().Where(c => c.CellReference.Value == cellReference).Count() > 0) { return row.Elements<Cell>().Where(c => c.CellReference.Value == cellReference).First(); } else { Cell refCell = null; foreach (Cell cell in row.Elements<Cell>()) { if (string.Compare(cell.CellReference.Value, cellReference, true) > 0) { refCell = cell; break; } } Cell newCell = new Cell() { CellReference = cellReference, StyleIndex = (UInt32Value)1U }; row.InsertBefore(newCell, refCell); worksheet.Save(); return newCell; } } #region ScriptResults declaration /// <summary> /// This enum provides a convenient shorthand within the scope of this class for setting the /// result of the script. /// /// This code was generated automatically. /// </summary> enum ScriptResults { Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success, Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure }; #endregion } }
问题是你还没有创build一个SheetData对象。 这是你必须做的。
请注意，这只是为了说明如何创build它，方法“GetCell”应检查Worksheet和SheetData是否已经存在，如果不存在，则创build它们。
public static void UpdateCell(string docName, string text, uint rowIndex, string columnName) { using (SpreadsheetDocument spreadSheet = SpreadsheetDocument.Open(docName, true)) { WorksheetPart worksheetPart = GetWorksheetPartByName(spreadSheet, "Commercial"); if (worksheetPart != null) { // Create new Worksheet Worksheet worksheet = new Worksheet(); worksheetPart.worksheet = worksheet; // Create new SheetData SheetData sheetData = new SheetData(); // Create new row Row row = new Row(){ RowIndex = rowIndex }; // Create new cell Cell cell = new Cell() { CellReference = columnName + rowIndex, DataType = CellValues.Number, CellValue = new CellValue(text) }; // Append cell to row row.Append(cell); // Append row to sheetData sheetData.Append(row); // Append sheetData to worksheet Worksheet.Append(sheetData); worksheetPart.Worksheet.Save(); } spreadSheet.WorkbookPart.Workbook.Save(); } }