将多个excel文件合并成一个
这里有个问题，我有几个生成的excel文件，每个文件都有1个选项卡（但这并不是说未来将不会有更多）。
我需要写的是一个可以打开每个文件的过程，并将其所有工作表（选项卡）复制到一个新文件中。
最后，这个新文件应该包含所有其他文件的工作表。
目前，我已经创build了以下来完成转换之间的Excel格式。
我不太确定从哪里去，我没有任何我用来创build这个的来源…并不太确定对象模型（为了将标签复制到一个新的文件）或者我将面对的问题，并确保我保持一切清理。
object excelApplication = null; object workbook = null; object workbooks = null; try { // Get the Remote Type var excelType = Type.GetTypeFromProgID("Excel.Application", Properties.Settings.Default.ExcelServer, true); // Instantiate the type excelApplication = Activator.CreateInstance(excelType); // Turn off Prompts excelApplication.GetType().InvokeMember( "DisplayAlerts", BindingFlags.SetProperty, null, excelApplication, new Object[] { false }); // Get a reference to the workbooks object workbooks = excelApplication.GetType().InvokeMember( "Workbooks", BindingFlags.GetProperty, null, excelApplication, null); // Open the input file workbook = workbooks.GetType().InvokeMember( "Open", BindingFlags.InvokeMethod, null, workbooks, new object[] { inputFilePath }); // If overwrite is turned off, and the file exist, the save as line will throw an error if (File.Exists(outputFilePath) && overwriteIfExists) { File.Delete(outputFilePath); } // Save the workbook workbook.GetType().InvokeMember( "SaveAs", BindingFlags.InvokeMethod, null, workbook, new object[] { outputFilePath, saveAsFileFormat, null, null, null, null, 1, null, null, null, null, null }); } finally { // Cleanup all created COM objects if (workbook != null) { workbook.GetType().InvokeMember( "Close", BindingFlags.InvokeMethod, null, workbook, null); Marshal.ReleaseComObject(workbook); workbook = null; } if (workbooks != null) { Marshal.ReleaseComObject(workbooks); workbooks = null; } if (excelApplication != null) { excelApplication.GetType().InvokeMember( "Quit", BindingFlags.InvokeMethod, null, excelApplication, null); Marshal.ReleaseComObject(excelApplication); excelApplication = null; } } 编辑：此代码几乎工作，问题是在实际上应该执行复制的行…
public byte[] MergeFiles(FileFormat saveAsFileFormat, List<byte[]> inputFileBytesList) { var outputFilePath = Path.Combine(Properties.Settings.Default.WorkingFolder, Guid.NewGuid() + ".target.xls"); Impersonate( Properties.Settings.Default.ImpersonationUser.Decrypt(), Properties.Settings.Default.ImpersonationDomain, Properties.Settings.Default.ImpersonationPassword.Decrypt() ); var convertedFileList = new List<string>(); foreach (var inputFileBytes in inputFileBytesList) { var inputFileExtension = GetExtension(inputFileBytes); var inputFilePath = Path.Combine(Properties.Settings.Default.WorkingFolder, Guid.NewGuid() + inputFileExtension); var convertedFileBytes = SaveAs(saveAsFileFormat, inputFileBytes); File.WriteAllBytes(inputFilePath, convertedFileBytes); convertedFileList.Add(inputFilePath); } // Target Excel File object targetExcelApplication = null; object targetWorkbook = null; object targetWorkbooks = null; object targetWorksheets = null; object targetWorksheet = null; try { // Get the Remote Type var excelType = Type.GetTypeFromProgID("Excel.Application", Properties.Settings.Default.ExcelServer, true); // Instantiate the type targetExcelApplication = Activator.CreateInstance(excelType); // Turn off Prompts targetExcelApplication.GetType().InvokeMember( "DisplayAlerts", BindingFlags.SetProperty, null, targetExcelApplication, new Object[] { false }); // Get a reference to the workbooks object targetWorkbooks = targetExcelApplication.GetType().InvokeMember( "Workbooks", BindingFlags.GetProperty, null, targetExcelApplication, null); // Create a workbook to add the sheets to targetWorkbook = targetWorkbooks.GetType().InvokeMember( "Add", BindingFlags.InvokeMethod, null, targetWorkbooks, new object[] { 1 }); // Get a reference to the worksheets object targetWorksheets = targetWorkbook.GetType().InvokeMember( "Sheets", BindingFlags.GetProperty, null, targetExcelApplication, null ); foreach (var inputFilePath in convertedFileList) { // Open each File, grabbing all tabs object sourceExcelApplication = null; object sourceWorkbooks = null; object sourceWorkbook = null; object sourceWorksheets = null; try { // Instantiate the type sourceExcelApplication = Activator.CreateInstance(excelType); // Turn off Prompts sourceExcelApplication.GetType().InvokeMember( "DisplayAlerts", BindingFlags.SetProperty, null, sourceExcelApplication, new Object[] {false}); // Get a reference to the workbooks object sourceWorkbooks = sourceExcelApplication.GetType().InvokeMember( "Workbooks", BindingFlags.GetProperty, null, sourceExcelApplication, null); // Open the input file sourceWorkbook = sourceWorkbooks.GetType().InvokeMember( "Open", BindingFlags.InvokeMethod, null, sourceWorkbooks, new object[] {inputFilePath}); // Get a reference to the worksheets object sourceWorksheets = sourceWorkbook.GetType().InvokeMember( "Sheets", BindingFlags.GetProperty, null, sourceExcelApplication, null); var sourceSheetCount = (int)(sourceWorksheets.GetType().InvokeMember( "Count", BindingFlags.GetProperty, null, sourceWorksheets, null)); for (var i = 1; i <= sourceSheetCount; i++) { var targetSheetCount = (int)(targetWorksheets.GetType().InvokeMember( "Count", BindingFlags.GetProperty, null, targetWorksheets, null)); var sourceWorksheet = sourceWorksheets.GetType().InvokeMember( "Item", BindingFlags.GetProperty, null, sourceWorksheets, new Object[] { i }); targetWorksheet = targetWorksheets.GetType().InvokeMember( "Item", BindingFlags.GetProperty, null, targetWorksheets, new Object[] { targetSheetCount }); // TODO: Copy into target file sourceWorksheet.GetType().InvokeMember( "Copy", BindingFlags.InvokeMethod, null, sourceWorksheet, new[] { Type.Missing, targetWorksheet } ); if (sourceWorksheet != null) { Marshal.ReleaseComObject(sourceWorksheet); sourceWorksheet = null; } } } finally { // Cleanup all created COM objects if (sourceWorksheets != null) { Marshal.ReleaseComObject(sourceWorksheets); sourceWorksheets = null; } if (sourceWorkbook != null) { sourceWorkbook.GetType().InvokeMember( "Close", BindingFlags.InvokeMethod, null, sourceWorkbook, null); Marshal.ReleaseComObject(sourceWorkbook); sourceWorkbook = null; } if (sourceWorkbooks != null) { Marshal.ReleaseComObject(sourceWorkbooks); sourceWorkbooks = null; } if (sourceExcelApplication != null) { sourceExcelApplication.GetType().InvokeMember( "Quit", BindingFlags.InvokeMethod, null, sourceExcelApplication, null); Marshal.ReleaseComObject(sourceExcelApplication); sourceExcelApplication = null; } } } // If overwrite is turned off, and the file exist, the save as line will throw an error if (File.Exists(outputFilePath)) { File.Delete(outputFilePath); } // Save the workbook targetWorkbook.GetType().InvokeMember( "SaveAs", BindingFlags.InvokeMethod, null, targetWorkbook, new object[] { outputFilePath, saveAsFileFormat, null, null, null, null, 1, null, null, null, null, null }); } finally { // Cleanup all created COM objects if (targetWorksheets != null) { Marshal.ReleaseComObject(targetWorksheets); targetWorksheets = null; } if (targetWorkbook != null) { targetWorkbook.GetType().InvokeMember( "Close", BindingFlags.InvokeMethod, null, targetWorkbook, null); Marshal.ReleaseComObject(targetWorkbook); targetWorkbook = null; } if (targetWorkbooks != null) { Marshal.ReleaseComObject(targetWorkbooks); targetWorkbooks = null; } if (targetExcelApplication != null) { targetExcelApplication.GetType().InvokeMember( "Quit", BindingFlags.InvokeMethod, null, targetExcelApplication, null); Marshal.ReleaseComObject(targetExcelApplication); targetExcelApplication = null; } } // Read target file bytes var resultBytes = (File.Exists(outputFilePath)) ? File.ReadAllBytes(outputFilePath) : new byte[] { }; // Delete working files if (File.Exists(outputFilePath)) File.Delete(outputFilePath); foreach (var inputFilePath in convertedFileList.Where(File.Exists)) { File.Delete(inputFilePath); } Repersonate(); // Return result return resultBytes; }
我得到的错误System.Runtime.InteropServices.COMException：复制方法的工作表类失败 ，这并没有多大帮助…我不知道为什么失败…
这似乎工作，只需要添加一些清理，以删除最初创build的空白工作表，然后在保存之前激活文件中的第一张
[WebMethod] public byte[] MergeFiles(FileFormat saveAsFileFormat, List<byte[]> inputFileBytesList) { //var outputFilePath = Path.Combine(Properties.Settings.Default.WorkingFolder, Guid.NewGuid() + ".xls"); var outputFilePath = Path.Combine(Properties.Settings.Default.WorkingFolder, "target.xls"); Impersonate( Properties.Settings.Default.ImpersonationUser.Decrypt(), Properties.Settings.Default.ImpersonationDomain, Properties.Settings.Default.ImpersonationPassword.Decrypt() ); var convertedFileList = new List<string>(); foreach (var inputFileBytes in inputFileBytesList) { var inputFileExtension = GetExtension(inputFileBytes); var inputFilePath = Path.Combine(Properties.Settings.Default.WorkingFolder, Guid.NewGuid() + inputFileExtension); File.WriteAllBytes(inputFilePath, inputFileBytes); var convertedFilePath = Path.Combine(Properties.Settings.Default.WorkingFolder, Guid.NewGuid() + inputFileExtension); SaveAsInternal(saveAsFileFormat, inputFilePath, convertedFilePath, true); convertedFileList.Add(convertedFilePath); } // Target Excel File object excelApplication = null; object excelWorkbooks = null; object targetWorkbook = null; object targetWorksheets = null; object targetWorksheet = null; try { // Get the Remote Type var excelType = Type.GetTypeFromProgID("Excel.Application", Properties.Settings.Default.ExcelServer, true); // Instantiate the type excelApplication = Activator.CreateInstance(excelType); // Turn off Prompts excelApplication.GetType().InvokeMember( "DisplayAlerts", BindingFlags.SetProperty, null, excelApplication, new Object[] { false }); // Get a reference to the workbooks object excelWorkbooks = excelApplication.GetType().InvokeMember( "Workbooks", BindingFlags.GetProperty, null, excelApplication, null); // Create a workbook to add the sheets to targetWorkbook = excelWorkbooks.GetType().InvokeMember( "Add", BindingFlags.InvokeMethod, null, excelWorkbooks, new object[] { 1 }); // Get a reference to the worksheets object targetWorksheets = targetWorkbook.GetType().InvokeMember( "Sheets", BindingFlags.GetProperty, null, excelApplication, null ); // Open each File, grabbing all tabs foreach (var inputFilePath in convertedFileList) { object sourceWorkbook = null; object sourceWorksheets = null; try { // Open the input file sourceWorkbook = excelWorkbooks.GetType().InvokeMember( "Open", BindingFlags.InvokeMethod, null, excelWorkbooks, new object[] {inputFilePath}); // Get a reference to the worksheets object sourceWorksheets = sourceWorkbook.GetType().InvokeMember( "Sheets", BindingFlags.GetProperty, null, excelApplication, null); var sourceSheetCount = (int)(sourceWorksheets.GetType().InvokeMember( "Count", BindingFlags.GetProperty, null, sourceWorksheets, null)); for (var i = 1; i <= sourceSheetCount; i++) { var targetSheetCount = (int)(targetWorksheets.GetType().InvokeMember( "Count", BindingFlags.GetProperty, null, targetWorksheets, null)); var sourceWorksheet = sourceWorksheets.GetType().InvokeMember( "Item", BindingFlags.GetProperty, null, sourceWorksheets, new Object[] { i }); targetWorksheet = targetWorksheets.GetType().InvokeMember( "Item", BindingFlags.GetProperty, null, targetWorksheets, new Object[] { targetSheetCount }); // TODO: Copy into target file sourceWorksheet.GetType().InvokeMember( "Copy", BindingFlags.InvokeMethod, null, sourceWorksheet, new[] { Type.Missing, targetWorksheet } ); if (sourceWorksheet != null) { Marshal.ReleaseComObject(sourceWorksheet); sourceWorksheet = null; } } } finally { // Cleanup all created COM objects if (sourceWorksheets != null) { Marshal.ReleaseComObject(sourceWorksheets); sourceWorksheets = null; } if (sourceWorkbook != null) { sourceWorkbook.GetType().InvokeMember( "Close", BindingFlags.InvokeMethod, null, sourceWorkbook, null); Marshal.ReleaseComObject(sourceWorkbook); sourceWorkbook = null; } } } // If overwrite is turned off, and the file exist, the save as line will throw an error if (File.Exists(outputFilePath)) { File.Delete(outputFilePath); } // Save the workbook targetWorkbook.GetType().InvokeMember( "SaveAs", BindingFlags.InvokeMethod, null, targetWorkbook, new object[] { outputFilePath, saveAsFileFormat, null, null, null, null, 1, null, null, null, null, null }); } finally { // Cleanup all created COM objects if (targetWorksheets != null) { Marshal.ReleaseComObject(targetWorksheets); targetWorksheets = null; } if (targetWorkbook != null) { targetWorkbook.GetType().InvokeMember( "Close", BindingFlags.InvokeMethod, null, targetWorkbook, null); Marshal.ReleaseComObject(excelWorkbooks); excelWorkbooks = null; } if (excelWorkbooks != null) { Marshal.ReleaseComObject(excelWorkbooks); excelWorkbooks = null; } if (excelApplication != null) { excelApplication.GetType().InvokeMember( "Quit", BindingFlags.InvokeMethod, null, excelApplication, null); Marshal.ReleaseComObject(excelApplication); excelApplication = null; } } // Read target file bytes var resultBytes = (File.Exists(outputFilePath)) ? File.ReadAllBytes(outputFilePath) : new byte[] { }; // Delete working files if (File.Exists(outputFilePath)) File.Delete(outputFilePath); foreach (var inputFilePath in convertedFileList.Where(File.Exists)) { File.Delete(inputFilePath); } Repersonate(); // Return result return resultBytes; }
使用ADO连接select值并使用范围内的copyFromRecordset方法粘贴到其他工作簿中。