C#实现对EXCEL指定单元格进行操作

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Office.Interop.Excel;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;
using Microsoft.Office.Core;

namespace HustCAD.IntePLM.Win.BatchEnterWinUI
{
public class SighExcel
{
#region DllImport Methods
[System.Runtime.InteropServices.DllImport("User32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto)]
public static extern int GetWindowThreadProcessId(IntPtr hwnd, out int ID);
#endregion

Microsoft.Office.Interop.Excel.ApplicationClass application = null;
Microsoft.Office.Interop.Excel.Workbook workBook = null;
Microsoft.Office.Interop.Excel.Worksheet wSheet = null;

/// <summary>
/// 对EXCEL指定单元格进行操作
/// </summary>
/// <param name="filePath">EXCEL表格所在路径</param>
/// <param name="row">行号</param>
/// <param name="column">列号</param>
/// <param name="code">内容</param>
/// <returns></returns>
public bool signExcel(string filePath, int row, int column, string code)
{
System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

object missing = Type.Missing;
try
{
try
{
application = new Microsoft.Office.Interop.Excel.ApplicationClass();
}
catch (Exception e)
{
System.IO.File.AppendAllText(System.IO.Path.Combine(GetCurrentPath(), "signExcellog.txt"), "文件" + filePath + "签入编号失败！ ，错误:" + e.Message.ToString() + "。  " + DateTime.Now.ToString("yyyy-MM-dd-hh:mm:ss"));
}
if (application == null)
{
System.IO.File.AppendAllText(System.IO.Path.Combine(GetCurrentPath(), "signExcellog.txt"), "文件" + filePath + "签入编号失败！ " + DateTime.Now.ToString("yyyy-MM-dd-hh:mm:ss"));
}

application.AlertBeforeOverwriting = false;
application.AskToUpdateLinks = false;
application.AutomationSecurity = MsoAutomationSecurity.msoAutomationSecurityLow;
application.DisplayAlerts = false;

workBook = application.Workbooks.Open(filePath, missing, false, missing, missing, missing,
true, missing, missing, missing, missing, missing, missing, missing, missing);
workBook.CheckCompatibility = false;//兼容性检查
workBook.DoNotPromptForConvert = true;

wSheet = (Worksheet)workBook.Worksheets[1];
wSheet.Cells[row, column] = code;
Microsoft.Office.Interop.Excel.Range rtemp = wSheet.get_Range(wSheet.Cells[3, 4], wSheet.Cells[3, 6]);
rtemp.Font.Name = "宋体";
rtemp.Font.Size = 12;
object RouteWorkbook = false;
object SaveChanges = XlSaveAction.xlSaveChanges;
//wBook.SaveAs(filePath, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
workBook.Save();
workBook.Close(SaveChanges, filePath, RouteWorkbook);
return true;
}
catch (Exception e)
{
System.IO.File.AppendAllText(System.IO.Path.Combine(GetCurrentPath(), "signExcellog.txt"), "文件" + filePath + "签入编号失败！ ，错误:" + e.Message.ToString() + "。  " + DateTime.Now.ToString("yyyy-MM-dd-hh:mm:ss"));
return false;
}
finally
{
if (workBook != null)
{
workBook.Close(true, missing, missing);
workBook = null;
}
if (application != null)
{
application.Quit();
KillSpecialExcel(application);
application = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
}

/// <summary>
/// Kill Special Excel Process
/// </summary>
public static void KillSpecialExcel(Application m_objExcel)
{
try
{
if (m_objExcel != null)
{
int lpdwProcessId;
GetWindowThreadProcessId(new IntPtr(m_objExcel.Hwnd), out lpdwProcessId);
System.Diagnostics.Process.GetProcessById(lpdwProcessId).Kill();
}
}
catch (Exception)
{}
}

public string getCellValue(string filePath, int row, int column)
{
System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

object missing = Type.Missing;
try
{
try
{
application = new Microsoft.Office.Interop.Excel.ApplicationClass();
}
catch (Exception e)
{
System.IO.File.AppendAllText(System.IO.Path.Combine(GetCurrentPath(), "signExcellog.txt"), "文件" + filePath + "签入编号失败！ ，错误:" + e.Message.ToString() + "。  " + DateTime.Now.ToString("yyyy-MM-dd-hh:mm:ss"));
}
if (application == null)
{
System.IO.File.AppendAllText(System.IO.Path.Combine(GetCurrentPath(), "signExcellog.txt"), "文件" + filePath + "签入编号失败！ " + DateTime.Now.ToString("yyyy-MM-dd-hh:mm:ss"));
}

application.AlertBeforeOverwriting = false;
application.AskToUpdateLinks = false;
application.AutomationSecurity = MsoAutomationSecurity.msoAutomationSecurityLow;
application.DisplayAlerts = false;

workBook = application.Workbooks.Open(filePath, missing, false, missing, missing, missing,
true, missing, missing, missing, missing, missing, missing, missing, missing);
workBook.CheckCompatibility = false;//兼容性检查
workBook.DoNotPromptForConvert = true;

wSheet = (Worksheet)workBook.Worksheets[1];
return ((Microsoft.Office.Interop.Excel.Range)wSheet.Cells[row, column]).Text.ToString().Trim();
}
catch (Exception e)
{
System.IO.File.AppendAllText(System.IO.Path.Combine(GetCurrentPath(), "signExcellog.txt"), "文件" + filePath + "签入编号失败！ ，错误:" + e.Message.ToString() + "。  " + DateTime.Now.ToString("yyyy-MM-dd-hh:mm:ss"));
return "";
}
finally
{
if (workBook != null)
{
workBook.Close(true, missing, missing);
workBook = null;
}
if (application != null)
{
application.Quit();
KillSpecialExcel(application);
application = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
}

/// <summary>
/// 得到当前程序的路径
/// </summary>
/// <returns></returns>
static public string GetCurrentPath()
{
string asstring = Assembly.GetExecutingAssembly().Location;
string[] aa = asstring.Split('\\');
string path = string.Empty;
foreach (string var in aa)
{
if (var != aa[aa.Length - 1])
path += var + @"\";
}
return path;
}
}
}