C# 从多个excel文档中读取数据并将其写入另一个excel文档
目前，我只能读入一份excel文档，并用我得到的代码编写相同的文档。现在我想读取多个excel文档，并将数据写入其中。现在我在一个文档中得到了一个明确的代码，但这不是我想要的。我理解我现在得到的代码的结构，所以我更愿意坚持下去。如何使用C# 从多个excel文档中读取数据并将其写入另一个excel文档,c#,excel,C#,Excel,目前，我只能读入一份excel文档，并用我得到的代码编写相同的文档。现在我想读取多个excel文档，并将数据写入其中。现在我在一个文档中得到了一个明确的代码，但这不是我想要的。我理解我现在得到的代码的结构，所以我更愿意坚持下去。如何使用excel\u init函数和excel\u getValue函数实现这一点 以下是我到目前为止所拥有的： static void Main(string[] args) { excel_init("C:\\Users\\A
excel\u initexcel\u getValuestatic void Main(string[] args)
{
excel_init("C:\\Users\\Admin\\Desktop\\excel1.xlsx");
List<string> list = new List<string>();
for (int i = 1; i <= 10; i++)
{
string firstColomExcelFile1 = "A" + i;
string allExcelDataFile1 = excel_getValue(firstColomExcelFile1);
excel_setValue("B" + i, allExcelDataFile1); //this has to happen in a different excel doc, on sheet 2
list.Add(allExcelDataFile1);
Console.WriteLine(allExcelDataFile1);
}
excel_close();
excel_init("C:\\Users\\Admin\\Desktop\\excel1.xlsx");
for (int j = 1; j < 5; j++) // loop for other excel document
{
string firstColomExcelFile2 = "A" + i;
string allExcelDataFile2 = excel_getValue(firstColomExcelFile2);
excel_setValue("C" + i, allExcelDataFile2);
Console.WriteLine(allExcelDataFile2);
}
excel_close();
// here I want to paste my lists in another doc file.
Console.WriteLine("Press key to continue");
Console.ReadKey();
}
private static Microsoft.Office.Interop.Excel.ApplicationClass appExcel;
private static Workbook newWorkbook = null;
private static _Worksheet objsheet = null;
//Method to initialize opening Excel
static void excel_init(String path)
{
appExcel = new Microsoft.Office.Interop.Excel.ApplicationClass();
if (System.IO.File.Exists(path))
{
// then go and load this into excel
newWorkbook = appExcel.Workbooks.Open(path, true, true);
objsheet = (_Worksheet)appExcel.ActiveWorkbook.ActiveSheet;
}
else
{
Console.WriteLine("Unable to open file!");
System.Runtime.InteropServices.Marshal.ReleaseComObject(appExcel);
appExcel = null;
}
}
static void excel_setValue(string cellname, string value)
{
objsheet.get_Range(cellname).set_Value(Type.Missing, value);
}
//Method to get value; cellname is A1,A2, or B1,B2 etc...in excel.
static string excel_getValue(string cellname)
{
string value = string.Empty;
try
{
value = objsheet.get_Range(cellname).get_Value().ToString();
}
catch
{
value = "";
}
return value;
}
//Method to close excel connection
static void excel_close()
{
if (appExcel != null)
{
try
{
newWorkbook.Close();
System.Runtime.InteropServices.Marshal.ReleaseComObject(appExcel.ActiveWorkbook.ActiveSheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(appExcel.ActiveWorkbook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(appExcel);
appExcel = null;
objsheet = null;
}
catch (Exception ex)
{
appExcel = null;
Console.WriteLine("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
}
不是很好的编码。。。但它是有效的…您可以打开多个工作簿
newWorkbook_Second = appExcel.Workbooks.Open(pathforanotherworkbook, true, true);
您需要一个FileManager类来处理文件的读写操作。然后使用文件管理器的实例读取多个文件并写入一个文件。但是，读取路径和写入路径必须不同
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using Microsoft.Office.Interop.Excel;
namespace MultipleExcelReadWriteExample
{
public class Program
{
private static void Main(string[] args)
{
// create a instance of the file manager
var fileManager = new FileManager();
// add the list of file paths to collection
fileManager.ListOfWorkbooksPath.Add("workBookToRead1", @"C:\ExcelFiles\WorkbookToRead1.xlsx");
fileManager.ListOfWorkbooksPath.Add("workBookToRead2", @"C:\ExcelFiles\WorkbookToRead2.xlsx");
fileManager.ListOfWorkbooksPath.Add("workBookToRead3", @"C:\ExcelFiles\WorkbookToRead3.xlsx");
fileManager.ListOfWorkbooksPath.Add("workBookToWrite1", @"C:\ExcelFiles\WorkbookToWrite1.xlsx");
// Open the excel app
fileManager.OpenExcelApp();
// open all the workbooks
fileManager.OpenWorkbooks();
// Do some data transfer here!
int index = 1;
foreach (var workbook in fileManager.ListOfWorkbooks)
{
if (workbook.Key.Contains("workBookToRead"))
{
// get the worksheet to read
var readWorksheet = workbook.Value.Worksheets["Sheet1"] as Worksheet;
// get the writing workbook
Workbook workbookToWrite = fileManager.ListOfWorkbooks["workBookToWrite1"];
// get the worksheet to write
var writeWorksheet = workbookToWrite.Worksheets["Sheet" + index] as Worksheet;
//TODO: create a new sheet if doesn't exist
for (int column = 1; column <= 10; column++)
{
for (int row = 1; row <= 10; row++)
{
// read the data from the worksheet
Tuple<dynamic, dynamic> data = fileManager.ReadFromCell(readWorksheet, column, row);
// write the data to the worksheet
fileManager.WriteToCell(writeWorksheet, column, row, data);
}
}
}
index++;
}
// save all workbooks
fileManager.SaveAllWorkbooks();
// close all workbooks
fileManager.CloseAllWorkbooks();
// close the excel app
fileManager.CloseExcelApp();
Console.WriteLine("Press key to continue");
Console.ReadKey();
}
}
public class FileManager
{
private Application _excelApp;
/// <summary>
/// Basic c'tor
/// </summary>
public FileManager()
{
ListOfWorkbooksPath = new Dictionary<string, string>();
ListOfWorkbooks = new Dictionary<string, Workbook>();
}
/// <summary>
/// List of workbook to read, with their name and path
/// </summary>
public Dictionary<string, string> ListOfWorkbooksPath { get; set; }
public Dictionary<string, Workbook> ListOfWorkbooks { get; set; }
/// <summary>
/// Finalizer
/// </summary>
~FileManager()
{
if (_excelApp != null)
{
_excelApp.Quit();
Marshal.ReleaseComObject(_excelApp);
}
_excelApp = null;
}
/// <summary>
/// Open the Excel application
/// </summary>
public void OpenExcelApp()
{
_excelApp = new Application();
}
/// <summary>
/// Open list of workbooks for given path
/// </summary>
public void OpenWorkbooks()
{
foreach (var item in ListOfWorkbooksPath)
{
if (!ListOfWorkbooks.ContainsKey(item.Key))
{
Workbook workbook = _excelApp.Workbooks.Open(item.Value);
ListOfWorkbooks.Add(item.Key, workbook);
}
}
}
/// <summary>
/// Read a cell and return the value and the cell format
/// </summary>
/// <param name="worksheet">The worksheet to read the value from.</param>
/// <param name="column">The column number to read the value from.</param>
/// <param name="row">The row number to read the value from.</param>
/// <returns>The value and cell format.</returns>
public Tuple<dynamic, dynamic> ReadFromCell(Worksheet worksheet, int column, int row)
{
var range = worksheet.Cells[row, column] as Range;
if (range != null)
{
dynamic value = range.Value2; // get the value of the cell
dynamic format = range.NumberFormat; // get the format of the cell
return new Tuple<dynamic, dynamic>(value, format);
}
return null;
}
/// <summary>
/// Write the data to a cell in worksheet.
/// </summary>
/// <param name="worksheet">The worksheet to write the value.</param>
/// <param name="column">The column number to write the value.</param>
/// <param name="row">The row number to write the value.</param>
/// <param name="data">The data to be written to a cell; this is a Tuple that contains the value and the cell format.</param>
public void WriteToCell(Worksheet worksheet, int column, int row, Tuple<dynamic, dynamic> data)
{
var range = worksheet.Cells[row, column] as Range;
if (range != null)
{
range.NumberFormat = data.Item2; // set the format of the cell
range.Value2 = data.Item1; // set the value of the cell
}
}
/// <summary>
/// Save all workbooks
/// </summary>
public void SaveAllWorkbooks()
{
foreach (var workbook in ListOfWorkbooks)
{
SaveWorkbook(workbook.Value);
}
}
/// <summary>
/// Save single workbook
/// </summary>
/// <param name="workbook"></param>
public void SaveWorkbook(Workbook workbook)
{
workbook.Save();
}
/// <summary>
/// Close all workbooks
/// </summary>
public void CloseAllWorkbooks()
{
foreach (var workbook in ListOfWorkbooks)
{
CloseWorkbook(workbook.Value);
}
ListOfWorkbooks.Clear();
}
/// <summary>
/// Close single workbook
/// </summary>
/// <param name="workbook"></param>
public void CloseWorkbook(Workbook workbook)
{
workbook.Close();
}
/// <summary>
/// Close the Excel Application
/// </summary>
public void CloseExcelApp()
{
if (_excelApp != null)
{
_excelApp.Quit();
}
_excelApp = null;
ListOfWorkbooksPath.Clear();
}
}
}
使用系统；
使用System.Collections.Generic；
使用System.Runtime.InteropServices；
使用Microsoft.Office.Interop.Excel；
命名空间MultipleExcelReadWriteExample
{
公共课程
{
私有静态void Main（字符串[]args）
{
//创建文件管理器的实例
var fileManager=newfilemanager（）；
//将文件路径列表添加到集合
fileManager.listofWorkbookPath.Add（“WorkbookStoreAD1”，@“C:\ExcelFiles\WorkbookStoreAD1.xlsx”）；
fileManager.listofWorkbookPath.Add（“WorkbookStoreAD2”，@“C:\ExcelFiles\WorkbookStoreAD2.xlsx”）；
fileManager.listofWorkbookPath.Add（“WorkbookStoreAD3”，@“C:\ExcelFiles\WorkbookStoreAD3.xlsx”）；
fileManager.ListofWorkbookPath.Add（“workBookToWrite1”，@“C:\ExcelFiles\workBookToWrite1.xlsx”）；
//打开excel应用程序
fileManager.OpenExcelApp（）；
//打开所有的工作簿
fileManager.OpenWorkbooks（）；
//在这里做一些数据传输！
int指数=1；
foreach（fileManager.ListOfWorkbooks中的var工作簿）
{
if（workbook.Key.Contains（“workBookToRead”））
{
//让学生阅读工作表
var readWorksheet=workbook.Value.Worksheets[“Sheet1”]作为工作表；
//拿到写作练习册
工作簿workbookToWrite=fileManager.ListOfWorkbooks[“workBookToWrite1”]；
//让工作表来写
var writeWorksheet=workbookToWrite.Worksheets[“Sheet”+索引]作为工作表；
//TODO:如果不存在，则创建新图纸
对于（int column=1；column不使用需要安装Excel的Interop，而是直接使用像EPPlus或Open XML SDK这样的库。这需要做大量的更改吗？我不太擅长这一点。我很高兴看到您使用ReleaseComObject
来发布Excel应用程序，但您还需要对您引用的每个其他COM对象都这样做引用-工作簿
，活动工作簿
，活动工作表
，等等。甚至反对你“双重”引用-appExcel.ActiveWorkbook.ActiveSheet
-你需要同时发布appExcel.ActiveWorkbook
和appExcel.ActiveWorkbook.ActiveSheet
。谢谢你的提示！我更改了代码：）@wouter-读一读：谢谢，我会解决这个问题的！如果我被这个解决方案困住了，我会发表评论。我真的不知道怎么做，你能以任何方式帮助我编写代码吗？是的，我会给你写一个示例代码，稍后再发布给你。正如我承诺的，请参见答案中的示例aboce。
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using Microsoft.Office.Interop.Excel;
namespace MultipleExcelReadWriteExample
{
public class Program
{
private static void Main(string[] args)
{
// create a instance of the file manager
var fileManager = new FileManager();
// add the list of file paths to collection
fileManager.ListOfWorkbooksPath.Add("workBookToRead1", @"C:\ExcelFiles\WorkbookToRead1.xlsx");
fileManager.ListOfWorkbooksPath.Add("workBookToRead2", @"C:\ExcelFiles\WorkbookToRead2.xlsx");
fileManager.ListOfWorkbooksPath.Add("workBookToRead3", @"C:\ExcelFiles\WorkbookToRead3.xlsx");
fileManager.ListOfWorkbooksPath.Add("workBookToWrite1", @"C:\ExcelFiles\WorkbookToWrite1.xlsx");
// Open the excel app
fileManager.OpenExcelApp();
// open all the workbooks
fileManager.OpenWorkbooks();
// Do some data transfer here!
int index = 1;
foreach (var workbook in fileManager.ListOfWorkbooks)
{
if (workbook.Key.Contains("workBookToRead"))
{
// get the worksheet to read
var readWorksheet = workbook.Value.Worksheets["Sheet1"] as Worksheet;
// get the writing workbook
Workbook workbookToWrite = fileManager.ListOfWorkbooks["workBookToWrite1"];
// get the worksheet to write
var writeWorksheet = workbookToWrite.Worksheets["Sheet" + index] as Worksheet;
//TODO: create a new sheet if doesn't exist
for (int column = 1; column <= 10; column++)
{
for (int row = 1; row <= 10; row++)
{
// read the data from the worksheet
Tuple<dynamic, dynamic> data = fileManager.ReadFromCell(readWorksheet, column, row);
// write the data to the worksheet
fileManager.WriteToCell(writeWorksheet, column, row, data);
}
}
}
index++;
}
// save all workbooks
fileManager.SaveAllWorkbooks();
// close all workbooks
fileManager.CloseAllWorkbooks();
// close the excel app
fileManager.CloseExcelApp();
Console.WriteLine("Press key to continue");
Console.ReadKey();
}
}
public class FileManager
{
private Application _excelApp;
/// <summary>
/// Basic c'tor
/// </summary>
public FileManager()
{
ListOfWorkbooksPath = new Dictionary<string, string>();
ListOfWorkbooks = new Dictionary<string, Workbook>();
}
/// <summary>
/// List of workbook to read, with their name and path
/// </summary>
public Dictionary<string, string> ListOfWorkbooksPath { get; set; }
public Dictionary<string, Workbook> ListOfWorkbooks { get; set; }
/// <summary>
/// Finalizer
/// </summary>
~FileManager()
{
if (_excelApp != null)
{
_excelApp.Quit();
Marshal.ReleaseComObject(_excelApp);
}
_excelApp = null;
}
/// <summary>
/// Open the Excel application
/// </summary>
public void OpenExcelApp()
{
_excelApp = new Application();
}
/// <summary>
/// Open list of workbooks for given path
/// </summary>
public void OpenWorkbooks()
{
foreach (var item in ListOfWorkbooksPath)
{
if (!ListOfWorkbooks.ContainsKey(item.Key))
{
Workbook workbook = _excelApp.Workbooks.Open(item.Value);
ListOfWorkbooks.Add(item.Key, workbook);
}
}
}
/// <summary>
/// Read a cell and return the value and the cell format
/// </summary>
/// <param name="worksheet">The worksheet to read the value from.</param>
/// <param name="column">The column number to read the value from.</param>
/// <param name="row">The row number to read the value from.</param>
/// <returns>The value and cell format.</returns>
public Tuple<dynamic, dynamic> ReadFromCell(Worksheet worksheet, int column, int row)
{
var range = worksheet.Cells[row, column] as Range;
if (range != null)
{
dynamic value = range.Value2; // get the value of the cell
dynamic format = range.NumberFormat; // get the format of the cell
return new Tuple<dynamic, dynamic>(value, format);
}
return null;
}
/// <summary>
/// Write the data to a cell in worksheet.
/// </summary>
/// <param name="worksheet">The worksheet to write the value.</param>
/// <param name="column">The column number to write the value.</param>
/// <param name="row">The row number to write the value.</param>
/// <param name="data">The data to be written to a cell; this is a Tuple that contains the value and the cell format.</param>
public void WriteToCell(Worksheet worksheet, int column, int row, Tuple<dynamic, dynamic> data)
{
var range = worksheet.Cells[row, column] as Range;
if (range != null)
{
range.NumberFormat = data.Item2; // set the format of the cell
range.Value2 = data.Item1; // set the value of the cell
}
}
/// <summary>
/// Save all workbooks
/// </summary>
public void SaveAllWorkbooks()
{
foreach (var workbook in ListOfWorkbooks)
{
SaveWorkbook(workbook.Value);
}
}
/// <summary>
/// Save single workbook
/// </summary>
/// <param name="workbook"></param>
public void SaveWorkbook(Workbook workbook)
{
workbook.Save();
}
/// <summary>
/// Close all workbooks
/// </summary>
public void CloseAllWorkbooks()
{
foreach (var workbook in ListOfWorkbooks)
{
CloseWorkbook(workbook.Value);
}
ListOfWorkbooks.Clear();
}
/// <summary>
/// Close single workbook
/// </summary>
/// <param name="workbook"></param>
public void CloseWorkbook(Workbook workbook)
{
workbook.Close();
}
/// <summary>
/// Close the Excel Application
/// </summary>
public void CloseExcelApp()
{
if (_excelApp != null)
{
_excelApp.Quit();
}
_excelApp = null;
ListOfWorkbooksPath.Clear();
}
}
}