c# - ClosedXML 返回文件

Question

我正在使用 blazor 和 .net 5。我正在尝试使用 ClosedXML 进行 Excel 导出。这是我写的简单方法:

public IActionResult CreateExcelSheet()
        {

            using (var wbook = new XLWorkbook())
            {
                var ws = wbook.Worksheets.Add("Sheet1");
                ws.Cell("A1").Value = "1";

                using (var stream = new MemoryStream())
                {
                    wbook.SaveAs(stream);
                    var content = stream.ToArray();
                    return File(content, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "Opportunities.xlsx");
                }
            }
        }

返回文件有一条红色下划线，表示不可调用的成员"file"不能像方法一样使用。 我不太确定如何纠正这个问题...我也不确定我是否正确使用 blazor 和 .net 5。非常感谢任何帮助!

Answer 1

我尝试过这个，它对我有用。 您的 URI 是 GET https://api/sample/excel。

示例:https://localhost:44370/api/Sample/excel

using System;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;
using ClosedXML.Excel;

namespace YourProject.API.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class SampleController : ControllerBase
    {
        [HttpGet("excel")]
        [AllowAnonymous]
        public IActionResult CreateExcelSheet()
        {
            try
            {
                using (var wbook = new XLWorkbook())
                {
                    var ws = wbook.Worksheets.Add("Sheet1");
                    ws.Cell("A1").Value = "1";

                    using (var stream = new System.IO.MemoryStream())
                    {
                        wbook.SaveAs(stream);
                        var content = stream.ToArray();
                        return File(content, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "Opportunities.xlsx");
                    }
                }
            }
            catch (Exception ex)
            {
                return StatusCode(StatusCodes.Status500InternalServerError);
            }
        }
    }
}