合并两个或更多的Excel文件
我陷入合并两个或更多的Excel单元格。 如果头文件从合并开始[0,0]成功发生。 如果标题没有从[0,0]开始，则合并失败。 我正在检查标准excel列名与导入excel表列名称。
public DataTable GetDataTable(string filepath) { var prevCulture = Thread.CurrentThread.CurrentCulture; Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture; OleDbConnection conn = null; DataTable dtSourceData = new DataTable(); string excelpath = filepath; #region connection if(excelpath!="") { try { OleDbConnectionStringBuilder sbConnection = new OleDbConnectionStringBuilder(); String strExtendedProperties = String.Empty; sbConnection.DataSource = excelpath; sbConnection.Provider = "Microsoft.ACE.OLEDB.12.0"; strExtendedProperties = "Excel 12.0;HDR=Yes;IMEX=1"; sbConnection.Add("Extended Properties", strExtendedProperties); conn = new OleDbConnection(sbConnection.ToString()); conn.Open(); } catch { try { conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.14.0;" + "Data Source=" + excelpath + ";Extended Properties=Excel 14.0 Xml"); conn.Open(); } catch { try { conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.15.0;" + "Data Source=" + excelpath + ";Extended Properties=Excel 15.0 Xml"); conn.Open(); } catch { try { conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + excelpath + ";Extended Properties=''"); conn.Open(); } catch (FileNotFoundException ex) { MessageBox.Show(ex.Message); //throw ex; } } } } } else { MessageBox.Show("Standard Template file is not found"); } #endregion try { List<string> sheetName = new List<string>(); sheetName = ListSheetInExcel(excelpath); for(int sheet=0;sheet<sheetName.Count;sheet++) { string tmpsheetName = sheetName[sheet]; tmpsheetName = tmpsheetName.TrimEnd('$'); tmpsheetName = tmpsheetName.TrimEnd('\''); tmpsheetName = tmpsheetName.TrimEnd('$'); tmpsheetName = tmpsheetName.TrimStart('\''); string CreateCommand = "SELECT * FROM [" + tmpsheetName + "$]"; var MyCommand = new System.Data.OleDb.OleDbDataAdapter(CreateCommand, conn); MyCommand.FillSchema(dtSourceData, SchemaType.Source); MyCommand.Fill(dtSourceData); MyCommand.Dispose(); conn.Close(); } return dtSourceData; } catch(Exception er) { MessageBox.Show("GetDataTable"+er.Message); throw er; } finally { Thread.CurrentThread.CurrentCulture = prevCulture; } } int cnt = 0; public DataTable MapDataTables(DataTable PrevDataTable, DataTable CurrDataTable, IEnumerable<XElement> ColumnNodes) { DataTable result = PrevDataTable; bool isFirstTime = true; int i = 0, prevRowCount = result.Rows.Count, totRowCount = result.Rows.Count + CurrDataTable.Rows.Count; int j = 0; int preRowCnt = PrevDataTable.Rows.Count; bool isKeyFound = false; j = CurrDataTable.Rows.Count; try { foreach (XElement col in ColumnNodes) { string newColName = col.Attribute("Name").Value; foreach (XElement colname in col.Elements()) { isKeyFound = false; foreach (DataColumn dc in CurrDataTable.Columns) { if (colname.Value == dc.ColumnName.Replace(".", "").Replace(" ", "").Replace("(", "").Replace(")", "").Replace("&", "").Replace("/", "")) { int rowCnt = PrevDataTable.Rows.Count; for (i = 0; i < CurrDataTable.Rows.Count; i++) { // if (CurrDataTable.Rows.Count < result.Rows.Count) // { if (isFirstTime) { DataRow toInsert = result.NewRow(); result.Rows.InsertAt(toInsert, i); result.Rows[i][newColName] = CurrDataTable.Rows[i][dc.ColumnName]; cnt++; } else { result.Rows[i][newColName] = CurrDataTable.Rows[i][dc.ColumnName]; j++; } } isFirstTime = false; } } } if (isKeyFound) { break; } } return result; } catch (Exception ex) { MessageBox.Show("MapDataTables" + ex.Message); return null; } } private void btnUpdate_Click(object sender, EventArgs e) { try { string stdTemplateFile = ProjPath + "\\Standard Format.xls"; string inputpath = ""; //= txtPath.Text; XDocument doc = new XDocument(); doc = XDocument.Load(@"Settings.xml"); var elem = doc.Element("Settings").Element("FieldName").Elements(); if (File.Exists(stdTemplateFile)) { var MapedTable = (dynamic)null; if (ChkListBox.CheckedItems.Count > 0) { string tempPath = Path.Combine(Path.GetDirectoryName(stdTemplateFile), Path.GetFileNameWithoutExtension(stdTemplateFile) + "_copy.xls"); foreach (string CheckedFile in ChkListBox.CheckedItems) { inputpath = CheckedFile; var PrevDataTable = GetDataTable(tempPath); var tmpData = PrevDataTable; var CurDataTable = GetDataTable(inputpath); MapedTable = MapDataTables(PrevDataTable, CurDataTable, elem); writeToExcel(CurDataTable, PrevDataTable, tempPath); } MessageBox.Show("Completed"); ChkListBox.Items.Clear(); } } } catch(Exception er) { MessageBox.Show("Update_Click" + er.Message); //throw er; } } 我会build议使用EPPLUS 。 在这里我不会给你一个例子，但是你提供的很多有关打开文件的代码在EPPLUS里面很容易完成。
示例代码：
ExcelPackage package = new ExcelPackage(/*FileInfo object*/); ExcelWorksheet sheet = package.Workbook.Worksheets.FirstOrDefault(); var cellValues= ((object[,])sheet.Cells[0, 1, 0, 20].Value);