我是新来的，希望您能为我提供帮助。
我需要一个代码来读取excel和xml文件并比较特定内容。 我仍然有基本的代码和从xml文件读取的提示。
下一步的问题是如何从一个xml文件读取和写入。我首先想简单地从一个excel文件中读写，然后在ist一步一步完成之后进行其余工作。但是我不知道该怎么做。
fileName是否在正确的位置？ 如何使用ReadExcel和WriteExcel？
在该示例中，我想读取一个数组中的完整文件（3列和不同长度的行）并更改一些值。
感谢您的所有帮助。 ：）
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using System.Xml;
using Excel = Microsoft.Office.Interop.Excel;
namespace Converter
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
const string fileName = @"N:\Dokumente\Bachelorarbeit\Dateien\Converter - Kopie\Converter\bin\Debug\Testdatei.xls";
public MainWindow()
{
InitializeComponent();
//Read xml and fill dict
XmlTextReader reader = new XmlTextReader("variablegroups.xml");
string string_xml = "";
string str1 = "ecatSource";
string str2 = "name";
bool inout = false;
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
string_xml = reader.Name;
break;
case XmlNodeType.Text:
if (string_xml.Equals(str1))
{
inout = true;
}
if ((string_xml.Equals(str1) || string_xml.Equals(str2)) && inout)
{
Console.Write(reader.Value); //write value
Console.Write("\n");
if (string_xml.Equals(str2))
{
inout = false;
}
}
break;
}
}
Console.ReadLine();
//Example for variables from XML
//VarSymbolicDic.Add("-184K1 (CPX-FB38 64Byte).Outputs.QB2.Bit07","Run In Turntable Brake-High pressure");
//VarSymbolicDic.Add("-184K1 (CPX-FB38 64Byte).Outputs.QB2.Bit08","Run In Turntable Brake-High pressure 2");
//Read comment from excel
string feecomment = "TIID.Device1.EtherCAT Simulation.-184K1 (CPX-FB38 64Byte).Outputs.QB2.Bit07";
var result = feecomment.Replace("TIID.Device1.EtherCAT Simulation.", "");
List<string> allcomments = new List<string>();
allcomments.Add(result);
foreach (string comment in allcomments)
{
if (VarSymbolicDic.ContainsKey(comment))
{
//replace symbolic name in excel
}
}
//write to excel again
}
//Read Excel
public void ReadExcel(string fileName)
{
using (var file = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
var wb = WorkbookFactory.Create(file);
var sheet = wb.GetSheetAt(wb.ActiveSheetIndex);
MessageBox.Show("Hallo1");
//Variables.Clear();
foreach (IRow row in sheet)
{
//Check if it is a TwinCat Excel File
var tag = row.GetCell(0)?.ToString() ?? "";
var address = row.GetCell(1)?.ToString() ?? "";
var vartype = row.GetCell(2)?.ToString() ?? "";
var varfullName = row.GetCell(4)?.ToString() ?? "";
var usage = row.GetCell(5)?.ToString() ?? "";
var comment = row.GetCell(6)?.ToString() ?? "";
//Tag = tag,
// Address = address,
// Type = type,
// Path = varfullName,
// Usage = usageMode,
}
wb.Close();
}
}
//Write result in excel
public void WriteExcel(string fileName)
{
//Create new Excel Workbook
var workbook = new HSSFWorkbook();
//Create new Excel Sheet
var sheet = workbook.CreateSheet("New Sheet");
//Create a header row
var headerRow = sheet.CreateRow(0);
headerRow.CreateCell(0).SetCellValue("Symbol");
headerRow.CreateCell(1).SetCellValue("Adress");
headerRow.CreateCell(2).SetCellValue("Type");
headerRow.CreateCell(3).SetCellValue("Comment");
headerRow.CreateCell(4).SetCellValue("VarFullName");
headerRow.CreateCell(5).SetCellValue("Usage");
//(Optional) freeze the header row so it is not scrolled
sheet.CreateFreezePane(0, 1, 0, 1);
int rowNumber = 1;
//Populate the sheet with values from the grid data
//Create a new Row
var row = sheet.CreateRow(rowNumber++);
//Set the Values for Cells
row.CreateCell(0).SetCellValue("");
row.CreateCell(1).SetCellValue(""); //Address);
row.CreateCell(2).SetCellValue(""); //Type.ToString());
row.CreateCell(3).SetCellValue(""); //Comment);
row.CreateCell(4).SetCellValue(""); //.Path));
row.CreateCell(5).SetCellValue(""); //.Usage.ToString()));
//Write the Workbook to a memory stream
try
{
FileStream fileOut = new FileStream(fileName, FileMode.Create);
workbook.Write(fileOut);
fileOut.Flush();
fileOut.Close();
workbook.Close();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
Dictionary<string,string> VarSymbolicDic = new Dictionary<string, string>();
}
}
答案 0 :(得分：0)
不，看起来像这样。
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using System.Xml;
using Excel = Microsoft.Office.Interop.Excel;
using System.Reflection;
namespace Converter
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
//Read xml and fill dict
XmlTextReader reader = new XmlTextReader("variablegroups.xml");
string string_xml = "";
string str1 = "ecatSource";
string str2 = "name";
bool inout = false;
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
string_xml = reader.Name;
break;
case XmlNodeType.Text:
if (string_xml.Equals(str1))
{
inout = true;
}
if ((string_xml.Equals(str1) || string_xml.Equals(str2)) && inout)
{
Console.Write(reader.Value); //write value
Console.Write("\n");
if (string_xml.Equals(str2))
{
inout = false;
}
}
break;
}
}
Console.ReadLine();
//Example for variables from XML
//VarSymbolicDic.Add("-184K1 (CPX-FB38 64Byte).Outputs.QB2.Bit07","Run In Turntable Brake-High pressure");
//VarSymbolicDic.Add("-184K1 (CPX-FB38 64Byte).Outputs.QB2.Bit08","Run In Turntable Brake-High pressure 2");
//Read comment from excel
string feecomment = "TIID.Device1.EtherCAT Simulation.-184K1 (CPX-FB38 64Byte).Outputs.QB2.Bit07";
var result = feecomment.Replace("TIID.Device1.EtherCAT Simulation.", "");
List<string> allcomments = new List<string>();
allcomments.Add(result);
/*
foreach (string comment in allcomments)
{
if (VarSymbolicDic.ContainsKey(comment))
{
//replace symbolic name in excel
}
}*/
//write to excel again
}
}
public class ExcelFile
{
private string excelFilePath = @"N:\Dokumente\Bachelorarbeit\Dateien\Converter_Kopie\Converter\bin\Debug\Test_Excel.xls";
private int rowNumber = 1; // define first row number to enter data in excel
private Excel.Application myExcelApplication;
private Excel.Workbook myExcelWorkbook;
private Excel.Worksheet myExcelWorkSheet;
public string GetExcelFilePath()
{ return excelFilePath; }
public void SetExcelFilePath(string value)
{ excelFilePath = value; }
public int GetRownumber()
{ return rowNumber; }
public void SetRownumber(int value)
{ rowNumber = value; }
public void OpenExcel()
{
myExcelApplication = null;
myExcelApplication = new Excel.Application(); // create Excell App
myExcelApplication.DisplayAlerts = false; // turn off alerts
myExcelWorkbook = myExcelApplication.Workbooks._Open(excelFilePath, Missing.Value,
Missing.Value, Missing.Value,Missing.Value, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); // open the existing excel file
int numberOfWorkbooks = myExcelApplication.Workbooks.Count; // get number of workbooks (optional)
myExcelWorkSheet = (Excel.Worksheet)myExcelWorkbook.Worksheets[1]; // define in which worksheet, do you want to add data
myExcelWorkSheet.Name = "WorkSheet 1"; // define a name for the worksheet (optinal)
int numberOfSheets = myExcelWorkbook.Worksheets.Count; // get number of worksheets (optional)
}
public void AddDataToExcel(string firstname, string lastname, string language, string email, string company)
{
myExcelWorkSheet.Cells[rowNumber, "H"] = firstname;
myExcelWorkSheet.Cells[rowNumber, "J"] = lastname;
myExcelWorkSheet.Cells[rowNumber, "Q"] = language;
myExcelWorkSheet.Cells[rowNumber, "BH"] = email;
myExcelWorkSheet.Cells[rowNumber, "CH"] = company;
rowNumber++; // if you put this method inside a loop, you should increase rownumber by one or what ever is your logic
}
public void closeExcel()
{
try
{
myExcelWorkbook.SaveAs(excelFilePath, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange,
Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); // Save data in excel
myExcelWorkbook.Close(true, excelFilePath, Missing.Value); // close the worksheet
}
finally
{
if (myExcelApplication != null)
{
myExcelApplication.Quit(); // close the excel application
}
}
}
}
}