/// <summary>
/// 读Excel单元格的数据
/// </summary>
/// <param name="cell">Excel单元格</param>
/// <param name="type">列数据类型</param>
/// <param name="obj"></param>
/// <returns>object 单元格数据</returns>
private static void SetValue(ICell cell, PropertyInfo type, object obj)
{
if (cell == null)
{
return;
}
object cellValue = NPOIExtensions.GetValueByCellStyle(cell, cell?.CellType);
string dataType = type.PropertyType.FullName;
if (dataType == "System.String")
{
// cellValue == type(double)，会有异常
type.SetValue(obj, cellValue?.ToString().Trim(), null);
}
else if (dataType == "System.DateTime")
{
DateTime pdt = Convert.ToDateTime(cellValue);
type.SetValue(obj, pdt, null);
}
else if (dataType?.Contains("System.DateTime") == true)
{
DateTime?pdt;
if (string.IsNullOrWhiteSpace(cellValue?.ToString()))
{
pdt = null;
}
else
{
pdt = Convert.ToDateTime(cellValue);
}
type.SetValue(obj, pdt, null);
}
else if (dataType == "System.Boolean")
{
bool pb = Convert.ToBoolean(cellValue);
type.SetValue(obj, pb, null);
}
else if (dataType == "System.Int16")
{
Int16 pi16 = Convert.ToInt16(cellValue);
type.SetValue(obj, pi16, null);
}
else if (dataType == "System.Int32")
{
Int32 pi32 = Convert.ToInt32(cellValue);
type.SetValue(obj, pi32, null);
}
else if (dataType == "System.Int64")
{
Int64 pi64 = Convert.ToInt64(cellValue);
type.SetValue(obj, pi64, null);
}
else if (dataType == "System.Byte")
{
Byte pb = Convert.ToByte(cellValue);
type.SetValue(obj, pb, null);
}
else if (dataType == "System.Decimal")
{
System.Decimal pd = Convert.ToDecimal(cellValue);
type.SetValue(obj, pd, null);
}
else if (dataType == "System.Double")
{
double pd = Convert.ToDouble(cellValue);
type.SetValue(obj, pd, null);
}
else
{
type.SetValue(obj, null, null);
}
}
/// <summary>
/// 实体保存到Excel
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="entitys"></param>
/// <param name="filePath"></param>
public static void ToExcel <T>(this List <T> entitys, string filePath) where T : new()
{
var table = NPOIExtensions.ToDatatableFromList(entitys);
DataTableToExcel(table, filePath);
}