如何解决c#中没有的方法?

I'm trying to read an xlsx file, and I got a basic overview from This Codeproject Link
Now, I'm getting the following exception message:

The code segment related to this exception is given below:

我正在尝试读取一个xlsx文件，现在我从这个Codeproject链接中得到了一个基本的概述，我得到了以下异常消息:与此异常相关的代码段如下所示:

public static sst SharedStrings;

    /// <summary>
    /// All worksheets in the Excel workbook deserialized
    /// </summary>
    /// <param name="ExcelFileName">Full path and filename of the Excel xlsx-file</param>
    /// <returns></returns>
    public static IEnumerable<worksheet> Worksheets(string ExcelFileName)
    {
        worksheet ws;
        using (ZipArchive zipArchive = ZipFile.Open(ExcelFileName, ZipArchiveMode.Read))
        {
            SharedStrings = DeserializedZipEntry<sst>(GetZipArchiveEntry(zipArchive, @"xl/sharedStrings.xml"));
            foreach (var worksheetEntry in (WorkSheetFileNames(zipArchive)).OrderBy(x => x.FullName))
            {
                ws = DeserializedZipEntry<worksheet>(worksheetEntry);
                ws.NumberOfColumns = worksheet.MaxColumnIndex + 1;
                ws.ExpandRows();
                yield return ws;
            }
        }
    }

After some searching, I figured out that I needed to target .NET 4.5 or above version, (I'm targetting 4.6.1, but I also have tried 4.5, still same results). Also, as far as the dependencies are concerned, my references look like this:

After doing all this, I'm still getting the exception mentioned above, and have no idea why this is happening.
EDIT 1: I've been through This * Link, where I figured that I need the latest DLLs. I went to the Nuget Package Manager, and there were "No Packages Found" which were available for the updates.

在搜索之后，我发现我需要以。net 4.5或更高版本为目标(我的目标是4.6.1，但我也尝试了4.5，仍然是相同的结果)。而且，就依赖关系而言，我的引用是这样的:在完成所有这些之后，我仍然会得到上面提到的异常，并且不知道为什么会发生这种情况。编辑1:我已经通过了这个*链接，我认为我需要最新的dll。我去了Nuget包管理器，那里“没有找到包”，可以进行更新。

1 个解决方案

#1

I have tried .NET 4.6.1 and 4.6.2. Both work OK for me.

我尝试过。net 4.6.1和4.6.2。这两个对我来说都可以。

My Visual Studio is Community Edition 2017

我的Visual Studio是2017年的社区版

The project references:

项目参考:

Note that System.IO.Compression.ZipFile is not referenced. It was not possible to reference it in my environment.

注意,System.IO.Compression。ZipFile不是引用。不可能在我的环境中引用它。

Use Workbook.Worksheets() or declare the calling class as sub-class of Excel.Workbook.

使用Workbook.Worksheets()或将调用类声明为Excel.Workbook的子类。

Excel is the namespace of the CodeProject article source which provides the necessary classes.

Excel是CodeProject文章源代码的命名空间，提供了必要的类。

using Excel;
using System;

namespace akExcelAsZipDemo
{
    class Program : Workbook
    {
        //  from
        //  https://www.codeproject.com/tips/801032/csharp-how-to-read-xlsx-excel-file-with-lines-ofthe
        //
        //  inspired:
        //  https://github.com/ahmadalli/ExcelReader

        static void Main(string[] args)
        {
            const string fileName = @"E:\AK\export.xlsx";

            var worksheets = Worksheets(fileName);

            foreach (worksheet ws in worksheets)
            {
                Console.WriteLine($"cols={ws.NumberOfColumns} rows={ws.Rows.Length}");
            }

            Console.WriteLine();
        }
    }
}

#1