RhSolutions-AddIn/RhSolutions.AddIn/Controllers/MergeTool.cs

using RhSolutions.AddIn;
using RhSolutions.Models;
using System;
using System.Collections.Generic;
using System.Linq;

namespace RhSolutions.Controllers
{
    internal class MergeTool : ToolBase
    {
        private List<SourcePriceList> SourceFiles { get; set; }

        public MergeTool()
        {
            var dialog = RhSolutionsAddIn.Excel.FileDialog[Microsoft.Office.Core.MsoFileDialogType.msoFileDialogFilePicker];
            dialog.AllowMultiSelect = true;
            dialog.Filters.Add("Файлы Excel", "*.xls; *.xlsx; *.xlsm");

            if ( dialog.Show() < 0)
            {
                List<string> files = new();

                foreach (string file in dialog.SelectedItems)
                {
                    files.Add(file);
                }

                SourceFiles = SourcePriceList.GetSourceLists(files.ToArray());
            } 

            else
            {
                throw new Exception("Не выбраны файлы");
            }
        }

        public override void FillTarget()
        {
            using (ProgressBar = new ProgressBar("Заполняю строки...", SourceFiles.Sum(x => x.PositionAmount.Count)))
            using (ResultBar = new ResultBar())
            {
                foreach (SourcePriceList source in SourceFiles)
                {
                    foreach (var kvp in source.PositionAmount)
                    {
                        FillPositionAmountToColumns(kvp, TargetFile.AmountCell.Column);
                        ProgressBar.Update();
                    }
                }

                FilterByAmount();
                ResultBar.Update();
            }
        }
    }
}