ASP.NETでExcelを表示する方法

namespace Excel_File_Viewer_IronXL.Models
{
    public class ExcelModel
    {
        public string SheetName { get; set; }

        // Data is a list of string arrays, each array represents a row in the sheet.
        public List<string[]> Data { get; set; }
    }
}

Namespace Excel_File_Viewer_IronXL.Models
	Public Class ExcelModel
		Public Property SheetName() As String

		' Data is a list of string arrays, each array represents a row in the sheet.
		Public Property Data() As List(Of String())
	End Class
End Namespace

using Microsoft.AspNetCore.Http;
using System.Collections.Generic;

namespace Excel_File_Viewer_IronXL.Models
{
    public class ExcelViewModel
    {
        public IFormFile File { get; set; }  // For uploading Excel file
        public string Message { get; set; }  // Message for storing success/error messages
        public List<ExcelModel> ExcelData { get; set; }  // List to store data from all sheets
    }
}

Imports Microsoft.AspNetCore.Http
Imports System.Collections.Generic

Namespace Excel_File_Viewer_IronXL.Models
	Public Class ExcelViewModel
		Public Property File() As IFormFile ' -  For uploading Excel file
		Public Property Message() As String ' -  Message for storing success/error messages
		Public Property ExcelData() As List(Of ExcelModel) ' -  List to store data from all sheets
	End Class
End Namespace

using Excel_File_Viewer_IronXL.Models;
using IronXL;
using System.Collections.Generic;
using System.Web.Mvc;
using System;
using System.Linq;

public class ExcelController : Controller
{
    // GET: Excel
    public ActionResult Index()
    {
        var model = new ExcelViewModel();

        // Define the file path for the Excel file
        string filePath = Server.MapPath("~/App_Data/Test.xlsx"); 

        // List to store data for each sheet
        List<ExcelModel> data = new List<ExcelModel>();

        try
        {
            // Load workbook directly from a file path
            var workbook = WorkBook.Load(filePath);

            // Loop through all worksheets in the workbook
            foreach (var worksheet in workbook.WorkSheets)
            {
                // Add each worksheet's name and data to the data list
                data.Add(new ExcelModel
                {
                    SheetName = worksheet.Name,
                    Data = worksheet.Rows.Select(r => r.ToArray().Select(c => c.Value.ToString()).ToArray()).ToList()
                });
            }

            model.ExcelData = data;
            model.Message = "File processed successfully!";
        }
        catch (Exception ex)
        {
            model.Message = $"Error occurred while processing file: {ex.Message}";
        }

        return View(model);
    }
}

Imports Excel_File_Viewer_IronXL.Models
Imports IronXL
Imports System.Collections.Generic
Imports System.Web.Mvc
Imports System
Imports System.Linq

Public Class ExcelController
	Inherits Controller

	' GET: Excel
	Public Function Index() As ActionResult
		Dim model = New ExcelViewModel()

		' Define the file path for the Excel file
		Dim filePath As String = Server.MapPath("~/App_Data/Test.xlsx")

		' List to store data for each sheet
		Dim data As New List(Of ExcelModel)()

		Try
			' Load workbook directly from a file path
			Dim workbook = WorkBook.Load(filePath)

			' Loop through all worksheets in the workbook
			For Each worksheet In workbook.WorkSheets
				' Add each worksheet's name and data to the data list
				data.Add(New ExcelModel With {
					.SheetName = worksheet.Name,
					.Data = worksheet.Rows.Select(Function(r) r.ToArray().Select(Function(c) c.Value.ToString()).ToArray()).ToList()
				})
			Next worksheet

			model.ExcelData = data
			model.Message = "File processed successfully!"
		Catch ex As Exception
			model.Message = $"Error occurred while processing file: {ex.Message}"
		End Try

		Return View(model)
	End Function
End Class

@model Excel_File_Viewer_IronXL.Models.ExcelViewModel

@{
    ViewBag.Title = "Index";
}

<h2>Excel File Viewer</h2>

@if (Model.ExcelData != null)
{
    <ul class="nav nav-tabs" id="myTab" role="tablist">
        @for (int i = 0; i < Model.ExcelData.Count; i++)
        {
            <li class="nav-item">
                <a class="nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle="tab" href="#content-@i" role="tab" aria-controls="content-@i" aria-selected="@(i == 0)">
                    @Model.ExcelData[i].SheetName
                </a>
            </li>
        }
    </ul>
    <div class="tab-content" id="myTabContent">
        @for (int i = 0; i < Model.ExcelData.Count; i++)
        {
            <div class="tab-pane fade @(i == 0 ? "show active" : "")" id="content-@i" role="tabpanel" aria-labelledby="tab-@i">
                <table class="table table-bordered">
                    @foreach (var row in Model.ExcelData[i].Data)
                    {
                        <tr>
                            @foreach (var cell in row)
                            {
                                <td>@cell</td>
                            }
                        </tr>
                    }
                </table>
            </div>
        }
    </div>
}

model ReadOnly Property () As Excel_File_Viewer_IronXL.Models.ExcelViewModel
	ViewBag.Title = "Index"
End Property

'INSTANT VB TODO TASK: The following line could not be converted:
(Of h2) Excel File Viewer</h2> [if](Model.ExcelData != Nothing)
If True Then
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <ul class="nav nav-tabs" id="myTab" role="tablist"> for(int i = 0; i < Model.ExcelData.Count; i++)
	"myTab" role="tablist"> [for](Integer i = 0; i < Model.ExcelData.Count; i)
		If True Then
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <ul class="nav nav-tabs" id="myTab" role
	"nav nav-tabs" id="myTab" role
	<ul class="nav nav-tabs" id
	i += 1
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <li class="nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle="tab" href="#content-@i" role="tab" aria-controls="content-@i" aria-selected="@(i == 0)"> @Model.ExcelData[i].SheetName </a> </li>
			"content-@i" aria-selected="@(i == 0)"> Model.ExcelData(i).SheetName </a> </li>
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <li class="nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle="tab" href="#content-@i" role="tab" aria-controls="content-@i" aria-selected
			"tab" aria-controls="content-@i" aria-selected
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <li class="nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle="tab" href="#content-@i" role="tab" aria-controls
			"#content-@i" role="tab" aria-controls
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <li class="nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle="tab" href="#content-@i" role
			"tab" href="#content-@i" role
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <li class="nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle="tab" href
			"tab-@i" data-toggle="tab" href
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <li class="nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle
			"nav-link @(i == 0 ? "active" : "")" id="tab-@i" data-toggle
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <li class="nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id
			"nav-item"> <a class="nav-link @(i == 0 ? "active" : "")" id
			<li class="nav-item"> <a class
		End If
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: </ul> <div class="tab-content" id="myTabContent"> for(int i = 0; i < Model.ExcelData.Count; i++)
	"tab-content" id="myTabContent"> [for](Integer i = 0; i < Model.ExcelData.Count; i)
		If True Then
	</ul> <div class="tab-content" id
	i += 1
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <div class="tab-pane fade @(i == 0 ? "show active" : "")" id="content-@i" role="tabpanel" aria-labelledby="tab-@i"> <table class="table table-bordered"> foreach(var row in Model.ExcelData[i].Data)
			"tab-@i"> <table class="table table-bordered"> foreach(var row in Model.ExcelData(i).Data)
					If True Then
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <div class="tab-pane fade @(i == 0 ? "show active" : "")" id="content-@i" role="tabpanel" aria-labelledby="tab-@i"> <table class
			"tabpanel" aria-labelledby="tab-@i"> <table class
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <div class="tab-pane fade @(i == 0 ? "show active" : "")" id="content-@i" role="tabpanel" aria-labelledby
			"content-@i" role="tabpanel" aria-labelledby
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <div class="tab-pane fade @(i == 0 ? "show active" : "")" id="content-@i" role
			"tab-pane fade @(i == 0 ? "show active" : "")" id="content-@i" role
			<div class="tab-pane fade @(i == 0 ? "show active" : "")" id
'INSTANT VB TODO TASK: Local functions are not converted by Instant VB:
'						(Of tr) @foreach(var cell in row)
'							{
'								<td> @cell</td>
'							}
						</tr>
					End If
				</table> </div>
		End If
	</div>
End If