我发现excel最新的扩展名.xlsx不用打开文件在计算机里就可以直接搜里面的内容。但老的.xls就搜不到。
1.C#写的操作EXCEL应用 提示“office检测到此文件存在一个问题。为帮助保护您的计算机,不能打开此文件。 之前还正常，换个电脑就报错。
先手工打开Excel，会提示“受保护的视图”，不能编辑。点启用编辑就行了。再打开软件，正常了。
2.找不到引用microsoft.office.core
在项目引用中右击选择添加引用,选择COM里面选择Microft Office 12.0 object Library和Microft Excel 12.0 object Library分别点确定即可!同样如果要引用World选Microft World 12.0 object Library! 2003/2007共通处理方式 分别为11或12版本 添加.net中Microsoft.Office.Interop.excel; 添加.net中Office
3.源码示例
using System;
using System.Reflection;
using System.IO;
using Microsoft.Office.Interop.Excel;
namespace Excel
{
class Excel
{
public static int startRow =5;
public static string jzmc = "";
public static string id = "";
public static Double count = 0;
public static Array zw;
public static bool WriteXls(string filename, System.Collections.ArrayList rowData, int sheetNum)
{
//启动Excel应用程序
Microsoft.Office.Interop.Excel.Application xls = new Microsoft.Office.Interop.Excel.Application();
// _Workbook book = xls.Workbooks.Add(Missing.Value); //创建一张表，一张表可以包含多个sheet
//如果表已经存在，可以用下面的命令打开
_Workbook book = xls.Workbooks.Open(filename, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
_Worksheet sheet;//定义sheet变量
xls.Visible = false;//设置Excel后台运行
xls.DisplayAlerts = false;//设置不显示确认修改提示
//创建并写入数据到sheet
try
{
sheet = (_Worksheet)book.Worksheets.get_Item(sheetNum);//获得第i个sheet，准备写入
}
catch (Exception ex)//不存在就增加一个sheet
{
sheet = (_Worksheet)book.Worksheets.Add(Missing.Value, book.Worksheets[book.Sheets.Count], 1, Missing.Value);
}
//sheet.Name = "第" + i.ToString() + "页";//设置当前sheet的Name
sheet.get_Range("C3", Type.Missing).Cells.Value2=jzmc;
sheet.get_Range("G3", Type.Missing).Cells.Value2=id;
sheet.get_Range("I3", Type.Missing).Cells.Value2=count;
for (int offset = 0; offset < 10; offset++)
{
string str = rowData[offset].ToString();
sheet.Cells[startRow, offset + 1] = rowData[offset].ToString();
}
startRow++;//行位置向前加
//将表另存为
// book.SaveAs(filename, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
//如果表已经存在，直接用下面的命令保存即可
book.Save();
book.Close(false, Missing.Value, Missing.Value);//关闭打开的表
xls.Quit();//Excel程序退出
//sheet,book,xls设置为null，防止内存泄露
sheet = null;
book = null;
xls = null;
GC.Collect();//系统回收资源
return true;
}
public static bool CreateFile(string filename)
{
try
{
//启动Excel应用程序
Microsoft.Office.Interop.Excel.Application xls = new Microsoft.Office.Interop.Excel.Application();
_Workbook book = xls.Workbooks.Add(Missing.Value); //创建一张表，一张表可以包含多个sheet
xls.DisplayAlerts = false;//设置不显示确认修改提示
//将表另存为
book.SaveAs(filename, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
book.Close(false, Missing.Value, Missing.Value);//关闭打开的表
xls.Quit();//Excel程序退出
//sheet,book,xls设置为null，防止内存泄露
xls = null;
GC.Collect();//系统回收资源
}
catch (Exception ex)//不存在就退出
{
return false;
}
return true;
}
public static Array ReadXls(string filename, int index)//读取第index个sheet的数据
{
//启动Excel应用程序
Microsoft.Office.Interop.Excel.Application xls = new Microsoft.Office.Interop.Excel.Application();
//打开filename表
_Workbook book = xls.Workbooks.Open(filename, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
try
{
_Worksheet sheet;//定义sheet变量
xls.Visible = false;//设置Excel后台运行
xls.DisplayAlerts = false;//设置不显示确认修改提示
sheet = (_Worksheet)book.Worksheets.get_Item(index);//获得第index个sheet，准备读取
Console.WriteLine(sheet.Name);
int row = sheet.UsedRange.Rows.Count;//获取不为空的行数
int col = sheet.UsedRange.Columns.Count;//获取不为空的列数
jzmc = sheet.get_Range("C3", Type.Missing).Cells.Value2;
id = sheet.get_Range("G3", Type.Missing).Cells.Value2;
count = sheet.get_Range("I3", Type.Missing).Cells.Value2;
zw = (Array)sheet.get_Range("B5", "B" + row).Cells.Value2; //获得区域数据赋值给Array数组，方便读取
Array value = (Array)sheet.get_Range("A5", "F" + row).Cells.Value2; //获得区域数据赋值给Array数组，方便读取
// Array value = (Array)sheet.get_Range(sheet.Cells[1, 1], sheet.Cells[row, col]).Cells.Value2;
book.Save();//保存
book.Close(false, Missing.Value, Missing.Value);//关闭打开的表
xls.Quit();//Excel程序退出
//sheet,book,xls设置为null，防止内存泄露
sheet = null;
book = null;
xls = null;
GC.Collect();//系统回收资源
return value;
}
catch (Exception ex)//不存在就退出
{
book.Close(false, Missing.Value, Missing.Value);//关闭打开的表
xls.Quit();//Excel程序退出
//sheet,book,xls设置为null，防止内存泄露
book = null;
xls = null;
GC.Collect();//系统回收资源
return null;
}
}
public static void Copy(string path, string path2)
{
//string path = @"c:/temp/MyTest.txt";
// string path2 = path + "temp";
try
{
// Create the file and clean up handles.
// using (FileStream fs = File.Create(path)) { }
// Ensure that the target does not exist.
File.Delete(path2);
// Copy the file.
// File.Copy(path, path2);
// Console.WriteLine("{0} copied to {1}", path, path2);
// Try to copy the same file again, which should succeed.
File.Copy(path, path2, true);
// Console.WriteLine("The second Copy operation succeeded, which was expected.");
}
catch
{
// Console.WriteLine("Double copy is not allowed, which was not expected.");
}
}
public static void Test()
{
string Current;
Current = Directory.GetCurrentDirectory();//获取当前根目录
Array Data = ReadXls(Current + "\\JMO-PCBA-019.xls", 1);//读取test.xls的第一个sheet表
foreach (string temp in Data)
Console.WriteLine(temp);
Console.ReadKey();
}
}
}