本文为大家分享了C#导入导出Excel数据的具体代码，供大家参考，具体内容如下
注：对于实体类对象最好新建一个并且继承原有实体类，这样可以将类型进行修改；
方法一：此种方法是用EPPLUS中的FileInfo流进行读取的（是不是流我还真不太了解，若有懂得请留言，非常感谢了）
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Abp.Extensions;
namespace HYZT.Ltxy.International.Ctrip.Exporting
{
public class ExcelLib
{
public ICtripPolicyExcelImport GetExcel(string filePath)
{
if (filePath.Trim() .IsNullOrEmpty())
throw new Exception("文件名不能为空");
//因为这儿用得是EPPLUS对Excel进行的操作，所以只能操作
//2007以后的版本以后的（即扩展名为.xlsx）
if (!filePath.Trim().EndsWith("xlsx"))
throw new Exception("请使用office Excel 2007版本或2010版本");
else if (filePath.Trim().EndsWith("xlsx"))
{
ICtripPolicyExcelImport res = new CtripPolicyExcelImport(filePath.Trim());
return res;
}
else return null;
}
}
}
方法接口：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace HYZT.Ltxy.International.Ctrip.Exporting
{
public interface ICtripPolicyExcelImport
{
/// <summary> 打开文件 </summary>
bool Open();
//ExcelVersion Version { get; }
/// <summary> 文件路径 </summary>
string FilePath { get; set; }
/// <summary> 文件是否已经打开 </summary>
bool IfOpen { get; }
/// <summary> 文件包含工作表的数量 </summary>
int SheetCount { get; }
/// <summary> 当前工作表序号 </summary>
int CurrentSheetIndex { get; set; }
/// <summary> 获取当前工作表中行数 </summary>
int GetRowCount();
/// <summary> 获取当前工作表中列数 </summary>
int GetColumnCount();
/// <summary> 获取当前工作表中某一行中单元格的数量 </summary>
/// <param name="Row">行序号</param>
int GetCellCountInRow(int Row);
/// <summary> 获取当前工作表中某一单元格的值（按字符串返回） </summary>
/// <param name="Row">行序号</param>
/// <param name="Col">列序号</param>
string GetCellValue(int Row, int Col);
/// <summary> 关闭文件 </summary>
void Close();
}
}
方法实现：
using OfficeOpenXml;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace HYZT.Ltxy.International.Ctrip.Exporting
{
public class CtripPolicyExcelImport:ICtripPolicyExcelImport
{
public CtripPolicyExcelImport()
{ }
public CtripPolicyExcelImport(string path)
{ filePath = path; }
private string filePath = "";
private ExcelWorkbook book = null;
private int sheetCount = 0;
private bool ifOpen = false;
private int currentSheetIndex = 0;
private ExcelWorksheet currentSheet = null;
private ExcelPackage ep = null;
public bool Open()
{
try
{
ep = new ExcelPackage(new FileInfo(filePath));
if (ep == null) return false;
book =ep.Workbook;
sheetCount = book.Worksheets.Count;
currentSheetIndex = 0;
currentSheet = book.Worksheets[1];
ifOpen = true;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
return true;
}
public void Close()
{
if (!ifOpen || ep == null) return;
ep.Dispose();
}
//public ExcelVersion Version
//{ get { return ExcelVersion.Excel07; } }
public string FilePath
{
get { return filePath; }
set { filePath = value; }
}
public bool IfOpen
{ get { return ifOpen; } }
public int SheetCount
{ get { return sheetCount; } }
public int CurrentSheetIndex
{
get { return currentSheetIndex; }
set
{
if (value != currentSheetIndex)
{
if (value >= sheetCount)
throw new Exception("工作表序号超出范围");
currentSheetIndex = value;
currentSheet =book.Worksheets[currentSheetIndex+1];
}
}
}
public int GetRowCount()
{
if (currentSheet == null) return 0;
return currentSheet.Dimension.End.Row;
}
public int GetColumnCount()
{
if (currentSheet == null) return 0;
return currentSheet.Dimension.End.Column;
}
public int GetCellCountInRow(int Row)
{
if (currentSheet == null) return 0;
if (Row >= currentSheet.Dimension.End.Row) return 0;
return currentSheet.Dimension.End.Column;
}
//根据行号和列号获取指定单元格的数据
public string GetCellValue(int Row, int Col)
{
if (currentSheet == null) return "";
if (Row >= currentSheet.Dimension.End.Row || Col >= currentSheet.Dimension.End.Column) return "";
object tmpO =currentSheet.GetValue(Row+1, Col+1);
if (tmpO == null) return "";
return tmpO.ToString();
}
}
}
