C＃Excel互操作以快速方式合并单元格

Question

我想合并单元格并执行多次...之所以使用这种合并，是因为我想要更多一张表。 每个表的列数不同，另一个表的列数不同...合并的数量和位置未知

    using Microsoft.Office.Interop.Excel;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp111
{
    class Program
    {
        static void Main(string[] args)
        {
            string x = @"C:\Users\hed-b\source\repos\TESTUserFormFromExcel\ConsoleApp111\bin\Debug\TEST.xltm";

            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application
            {
                DisplayAlerts = false,
                Visible = false,
                ScreenUpdating = false,
            };

            Workbook wb = xlApp.Workbooks.Open(x);
            Worksheet ws = (Worksheet)wb.Worksheets[1];
            if (ws == null)
            {
                Console.WriteLine("Worksheet could not be created. Check that your office installation and project references are correct.");
                return;
            }
            Stopwatch stopWatch = Stopwatch.StartNew();

            for (int i = 2; i <= 10; i++)
            {
                ws.get_Range("A"+i, "B"+i).Merge();

            }
            for (int i = 2; i <= 10; i++)
            {
                ws.get_Range("C" + i, "D" + i).Merge();
            }
            for (int i = 2; i <= 10; i++)
            {
                ws.get_Range("E" + i, "H" + i).Merge();
            }
            Console.WriteLine(stopWatch.ElapsedMilliseconds);

            stopWatch = Stopwatch.StartNew();
            ws.get_Range("A" + 2, "H" + 10).Value2 = new string[10, 5]{
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
                { "aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaa","","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
            };

            ws.get_Range("A" + 11, "H" + 15).Value2 = new string[5, 8]{
                { "bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb"},
                { "bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb"},
                { "bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb"},
                { "bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb"},
                { "bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb","bbbbb"}
            };

            Console.WriteLine(stopWatch.ElapsedMilliseconds);

            xlApp.ScreenUpdating = true;
            xlApp.Visible = true;
        }
    }
}

我只是在寻找更好的方法来更快地做到这一点

所有这些示例程序合并大约需要1724 ms。 在我的实际程序中，我进行了更多的合并，并花费了5000多毫秒。 这合并了大部分时间...

Answer 1

如果立即执行合并并让Excel处理需要合并的多个范围，则可能会更好。

即定义一个包含多个区域的范围对象，并在其上调用Merge 。 它不会将所有内容合并到一个大的胖单元中，但是会合并定义的多个区域：

var ranges = String.Empty();

for (int i = 2; i <= 10; i++)
{
    ranges += $"A{i}:B{i},C{i}:D{i},E{i}:H{i},";
}

ws.get_Range(ranges.TrimEnd(',')).Merge();