WorkSheet.DeleteColumn不删除列，只清除数据

Question

我使用 LoadFromCollection 从 List<T> 加载我的 sheet 数据。然后我删除了一些额外的列，然后将 Table 添加到 sheet。最后我保存了文件。

我希望 table 中有 2 列，但有 4 列，其中 2 列为空。

我怀疑这可能与我正在使用的范围有关，但我似乎无法找到调整范围的地方，使其不包含已删除的 2 列。

代码：

using OfficeOpenXml;
using System.Collections.Generic;
using System.IO;

namespace DelColCode
{
    class Program
    {
        static void Main(string[] args)
        {
            //get some test data
            var cars = Car.GenerateList();

            var package = new ExcelPackage();

            //Create the worksheet 
            var sheet = package.Workbook.Worksheets.Add("Car List");

            //Read the data into a range
            var range = sheet.Cells["A1"].LoadFromCollection(cars, true);

            //delete the first and last columns
            sheet.DeleteColumn(1);
            sheet.DeleteColumn(3);

            //Make the range a table
            sheet.Tables.Add(range, $"data");

            //save and dispose
            package.File = new FileInfo("carlist.xlsx");
            package.Save();
            package.Dispose();
        }
    }

    public class Car
    {
        public int Id { get; set; }
        public string Make { get; set; }
        public string Model { get; set; }
        public int ReleaseYear { get; set; }
        

        public Car(int id, string make, string model, int releaseYear)
        {
            Id = Id;
            Make = make;
            Model = model;
            ReleaseYear = releaseYear;
        }

        internal static List<Car> GenerateList()
        {
            return new List<Car>
            {
                //random data
                new Car(1,"Toyota", "Carolla", 1950),
                new Car(2,"Toyota", "Yaris", 2000),
                new Car(3,"Toyota", "Hilux", 1990),
                new Car(4,"Nissan", "Juke", 2010),
                new Car(5,"Nissan", "Trail Blazer", 1995),
                new Car(6,"Nissan", "Micra", 2018),
                new Car(7,"BMW", "M3", 1980),
                new Car(8,"BMW", "X5", 2008),
                new Car(9,"BMW", "M6", 2003),
                new Car(10,"Merc", "S Class", 2001)
            };
        }
    }
}

预期结果：

结果：

Answer 1

使用以下内容：

Excel.Range range = (Excel.Range)sheet.get_Range("C1", Missing.Value);
range.EntireColumn.Delete(Missing.Value);
System.Runtime.InteropServices.Marshal.ReleaseComObject(range);

http://bytes.com/topic/c-sharp/answers/258110-how-do-you-delete-excel-column http://quicktestprofessional.wordpress.com/2008/02/14/delete-columns-from-xl-sheet/

Answer 2

尝试在 table 中加载范围后删除列。

var range = sheet.Cells["A1"].LoadFromCollection(cars, true);
sheet.Tables.Add(range, $"data");
sheet.DeleteColumn(1);
sheet.DeleteColumn(3);

WorkSheet.DeleteColumn不删除列，只清除数据

WorkSheet.DeleteColumn does not delete column, just clears data

c#

excel

epplus

epplus-4