netcore通用npoi导入excel_list<t> inputexce<t>(iformfile file)-优快云博客

本文链接：https://blog.youkuaiyun.com/zhangzhengling/article/details/121868633

此篇博客介绍了如何使用C#编程语言通过IFormFile接口从Excel文件中读取数据，并转换为指定类型T的列表。它涵盖了异常处理和不同Excel文件格式的支持。

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/// <summary>
/// 获取excel文件内类容并转换成列表
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="file"></param>
/// <returns></returns>
public List<T> ImportExcel<T>(IFormFile file) where T : new()
{
List<T> _xlist = new List<T>();
Type _xtype = typeof(T);
var _xproperties = _xtype.GetProperties();
try
{
string _xfile = Path.GetExtension(file.FileName).ToLower();
MemoryStream _ms = new MemoryStream();
file.CopyTo(_ms);
_ms.Seek(0, SeekOrigin.Begin);
IWorkbook _xbook;
if (_xfile == ".xlsx")
{
_xbook = new XSSFWorkbook(_ms);
}
else if (_xfile == ".xls")
{
_xbook = new HSSFWorkbook(_ms);
}
else
{
_xbook = null;
}
ISheet _xsheet = _xbook.GetSheetAt(0);

int _xCountRow = _xsheet.LastRowNum + 1;//获取总行数

if (_xCountRow - 1 == 0)
{
return _xlist;
}

for (int i = 1; i < _xCountRow; i++)
{
//获取第i行的数据
var _xrow = _xsheet.GetRow(i);
if (_xrow != null)
{
T xmodel = Activator.CreateInstance<T>();
//循环的验证单元格中的数据
for (int j = 0; j < _xproperties.Length; j++)
{
var _xproperty = _xproperties[j];
_xproperty.SetValue(xmodel, _xrow.GetCell(j) != null ? _xrow.GetCell(j).ToString() : string.Empty, null);
}
_xlist.Add(xmodel);
}
}
return _xlist;
}
catch (Exception e)
{
return _xlist;
}
}