使用 EPPLUS 从列表导出到 Excel [英] export to Excel from a list with EPPLUS

问题描述

我正在尝试使用 EPPLUS 在 c# 中将列表导出到 Excel，当我执行程序时不会给我错误，但是当我打开 Excel 时，我看到不是正确的数据，他输入了项目+对象的名称与对象具有列表的次数一样多:

i´m trying to export a list to Excel in c# with EPPLUS, when i execute the program don´t give me errors, but when i open the Excel i see that are not the correct data, he put the name of the projet+the name of the object as many times as objects have the list:

对象代码:

class Stock
        {
            public string Nif;
            public string Proveedor;
            public string Coodigo;
            public string descripcion;
            public string Catalogo;
            public string Estadistico;
            public decimal StockOn;

        }

当这些列表(lstStock)被填满时，我创建一个 Excel 并使用选项 loadfromcollection :

and when thes list(lstStock) is filled i create an Excel and use the option loadfromcollection :

        System.IO.FileInfo f = new System.IO.FileInfo("D:\stock_termos.xlsx");
            if (f.Exists) f.Delete();
            using (ExcelPackage ep = new ExcelPackage(f))
            {   
                ExcelWorksheet hoja = ep.Workbook.Worksheets.Add("TOTAL OBSOLETOS");
                hoja.Cells[1, 1].Value = "NIF"; ;
                hoja.Cells[1, 2].Value = "Proveedor";
                hoja.Cells[1, 3].Value = "Código";
                hoja.Cells[1, 4].Value = "Descripción";
                hoja.Cells[1, 5].Value = "Catálogo";
                hoja.Cells[1, 6].Value = "Cod.Estadístico";
                hoja.Cells[1, 7].Value = "Stock On";
                hoja.Cells[2, 1].LoadFromCollection(lstStock);
            }

提示是，当我在 VisualStudio 中调试应用程序时，我可以看到列表已正确填充:

The cuestión is that when i debug the aplication in VisualStudio i can see the list is correctly filled:

所以我认为错误是当我尝试使用 LoadFromCollection 方法将数据导出到 Excel 时，但我不知道出了什么问题，请帮忙.

So i think the error is when i try to export the data to Excel, with the LoadFromCollection method, but i can´t se what is wrong, please help.

推荐答案

您使用的是什么版本的 EPPlus?我问是因为我很惊讶它不会像当前最新的 4.1.0 那样抛出错误.也许旧版本更宽容.

What version of EPPlus are you using? I ask because I am surprised it does not throw an error as it does with 4.1.0 which is currently the latest. Maybe an older version is more forgiving.

但是为了回答您的问题，如果您查看最终调用的 LoadFromCollection 的最终重载的签名，您会看到:

But to answer you question, if you look at the signature of the final overload of LoadFromCollection that is eventually called you will see this:

public ExcelRangeBase LoadFromCollection<T>(IEnumerable<T> Collection, bool PrintHeaders, TableStyles TableStyle, BindingFlags memberFlags, MemberInfo[] Members)

请注意，Epplus 仅查看 MemberInfos 而不是您对象正在使用的 Fields.如果您将 Stock 对象更改为:

Notice that Epplus is only looking at MemberInfos and not a Fields which is what you object is using. If you change Stock object to this:

class Stock
{
    public string Nif { get; set; }
    public string Proveedor { get; set; }
    public string Coodigo { get; set; }
    public string descripcion { get; set; }
    public string Catalogo { get; set; }
    public string Estadistico { get; set; }
    public decimal StockOn { get; set; }
}

您应该会看到结果.

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