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Merge pull request #257 from SyncfusionExamples/969014-video
969014 - How to Work with Formulas in an Excel Document Using the .NET Excel Library
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‎Videos/Excel_Formulas/Controllers/HomeController.cs‎

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using System.Diagnostics;
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using Excel_Formulas.Models;
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using Microsoft.AspNetCore.Mvc;
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using Syncfusion.XlsIO;
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namespace Excel_Formulas.Controllers
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{
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public class HomeController : Controller
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{
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private readonly ILogger<HomeController> _logger;
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public HomeController(ILogger<HomeController> logger)
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{
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_logger = logger;
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}
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public IActionResult AddFormula()
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{
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ExcelEngine excelEngine = new ExcelEngine();
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IApplication application = excelEngine.Excel;
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application.DefaultVersion = ExcelVersion.Xlsx;
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IWorkbook workbook = application.Workbooks.Create(1);
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IWorksheet worksheet = workbook.Worksheets[0];
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worksheet.Range["A1"].Number = 10;
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worksheet.Range["B1"].Number = 20;
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worksheet.Range["C1"].Formula = "=SUM(A1,B1)";
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return ExportWorkbook(workbook, "Formula.xlsx");
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}
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public IActionResult CrossSheetReference()
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{
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ExcelEngine excelEngine = new ExcelEngine();
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IApplication application = excelEngine.Excel;
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application.DefaultVersion = ExcelVersion.Xlsx;
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IWorkbook workbook = application.Workbooks.Create(2);
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IWorksheet worksheet1 = workbook.Worksheets[0];
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IWorksheet worksheet2 = workbook.Worksheets[1];
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worksheet1.Range["A1"].Number = 10;
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worksheet2.Range["B1"].Number = 20;
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worksheet1.Range["C1"].Formula = "=SUM(Sheet2!B1,Sheet1!A1)";
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return ExportWorkbook(workbook, "CrossSheetReference.xlsx");
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}
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public IActionResult NamedRanges()
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{
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ExcelEngine excelEngine = new ExcelEngine();
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IApplication application = excelEngine.Excel;
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application.DefaultVersion = ExcelVersion.Xlsx;
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IWorkbook workbook = application.Workbooks.Create(1);
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IWorksheet worksheet = workbook.Worksheets[0];
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worksheet.Range["A1"].Number = 10;
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worksheet.Range["B1"].Number = 20;
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IName name1 = workbook.Names.Add("One");
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name1.RefersToRange = worksheet.Range["A1"];
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IName name2 = workbook.Names.Add("Two");
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name2.RefersToRange = worksheet.Range["B1"];
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worksheet.Range["C1"].Formula = "=SUM(One,Two)";
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return ExportWorkbook(workbook, "NamedRanges.xlsx");
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}
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public IActionResult ArrayFormula()
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{
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ExcelEngine excelEngine = new ExcelEngine();
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IApplication application = excelEngine.Excel;
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application.DefaultVersion = ExcelVersion.Xlsx;
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IWorkbook workbook = application.Workbooks.Create(1);
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IWorksheet worksheet = workbook.Worksheets[0];
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worksheet.Range["A1:D1"].FormulaArray = "{1,2,3,4}";
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worksheet.Names.Add("ArrayRange", worksheet.Range["A1:D1"]);
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worksheet.Range["A2:D2"].FormulaArray = "ArrayRange+100";
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return ExportWorkbook(workbook, "ArrayFormula.xlsx");
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}
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public IActionResult TableFormula()
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{
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ExcelEngine excelEngine = new ExcelEngine();
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IApplication application = excelEngine.Excel;
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application.DefaultVersion = ExcelVersion.Xlsx;
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IWorkbook workbook = application.Workbooks.Create(1);
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IWorksheet worksheet = workbook.Worksheets[0];
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IListObject table = worksheet.ListObjects.Create("Table1", worksheet["A1:D3"]);
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worksheet[1, 1].Text = "Products";
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worksheet[1, 2].Text = "Rate";
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worksheet[1, 3].Text = "Quantity";
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worksheet[1, 4].Text = "Total";
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worksheet[2, 1].Text = "Item1";
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worksheet[2, 2].Number = 200;
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worksheet[2, 3].Number = 2;
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worksheet[3, 1].Text = "Item2";
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worksheet[3, 2].Number = 300;
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worksheet[3, 3].Number = 3;
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table.Columns[3].CalculatedFormula = "SUM(20,[Rate]*[Quantity])";
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return ExportWorkbook(workbook, "CalculatedColumn.xlsx");
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}
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private FileStreamResult ExportWorkbook(IWorkbook workbook, string fileName)
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{
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MemoryStream stream = new MemoryStream();
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workbook.SaveAs(stream);
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stream.Position = 0;
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return File(stream, "application/xlsx", fileName);
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}
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public IActionResult Index()
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{
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return View();
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}
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public IActionResult Privacy()
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{
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return View();
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}
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[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
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public IActionResult Error()
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{
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return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
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}
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}
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}

‎Videos/Excel_Formulas/Excel_Formulas.csproj‎

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Syncfusion.XlsIO.Net.Core" Version="31.1.17" />
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</ItemGroup>
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</Project>

‎Videos/Excel_Formulas/Models/ErrorViewModel.cs‎

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namespace Excel_Formulas.Models
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{
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public class ErrorViewModel
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{
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public string? RequestId { get; set; }
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public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
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}
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}

‎Videos/Excel_Formulas/Program.cs‎

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namespace Excel_Formulas
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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var builder = WebApplication.CreateBuilder(args);
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// Add services to the container.
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builder.Services.AddControllersWithViews();
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var app = builder.Build();
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// Configure the HTTP request pipeline.
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if (!app.Environment.IsDevelopment())
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{
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app.UseExceptionHandler("/Home/Error");
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// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
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app.UseHsts();
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}
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app.UseHttpsRedirection();
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app.UseStaticFiles();
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app.UseRouting();
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app.UseAuthorization();
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app.MapControllerRoute(
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name: "default",
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pattern: "{controller=Home}/{action=Index}/{id?}");
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app.Run();
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}
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}
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}

‎Videos/Excel_Formulas/Properties/launchSettings.json‎

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{
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"$schema": "http://json.schemastore.org/launchsettings.json",
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"iisSettings": {
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"windowsAuthentication": false,
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"anonymousAuthentication": true,
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"iisExpress": {
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"applicationUrl": "http://localhost:46852",
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"sslPort": 44381
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}
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},
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"profiles": {
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"http": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"applicationUrl": "http://localhost:5287",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"https": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"applicationUrl": "https://localhost:7138;http://localhost:5287",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"IIS Express": {
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"commandName": "IISExpress",
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"launchBrowser": true,
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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}
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}
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}

‎Videos/Excel_Formulas/Views/Home/Index.cshtml‎

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@{
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ViewData["Title"] = "Home Page";
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}
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<div>
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<h2 style="margin-bottom: 20px"> Working with Formulas in Excel</h2>
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<div>
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<button style="width: 250px; margin-bottom: 20px; height: 40px;display:block;font-size:18px;"
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onclick="location.href='@Url.Action("AddFormula", "Home")'">
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Add Formula
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</button>
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<button style="width: 250px; margin-bottom: 20px; height: 40px;display:block;font-size:18px;"
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onclick="location.href='@Url.Action("CrossSheetReference", "Home")'">
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Cross-Sheet Reference
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</button>
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<button style="width: 250px; margin-bottom: 20px; height: 40px;display:block;font-size:18px;"
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onclick="location.href='@Url.Action("NamedRanges", "Home")'">
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Named Ranges
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</button>
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<button style="width: 250px; margin-bottom: 20px; height: 40px;display:block;font-size:18px;"
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onclick="location.href='@Url.Action("ArrayFormula", "Home")'">
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Array Formula
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</button>
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<button style="width: 250px; margin-bottom: 20px; height: 40px;display:block;font-size:18px;"
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onclick="location.href='@Url.Action("TableFormula", "Home")'">
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Table Formula
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</button>
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</div>
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</div>

‎Videos/Excel_Formulas/Views/Home/Privacy.cshtml‎

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@{
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ViewData["Title"] = "Privacy Policy";
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}
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<h1>@ViewData["Title"]</h1>
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<p>Use this page to detail your site's privacy policy.</p>

‎Videos/Excel_Formulas/Views/Shared/Error.cshtml‎

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@model ErrorViewModel
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@{
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ViewData["Title"] = "Error";
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}
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<h1 class="text-danger">Error.</h1>
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<h2 class="text-danger">An error occurred while processing your request.</h2>
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@if (Model.ShowRequestId)
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{
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<p>
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<strong>Request ID:</strong> <code>@Model.RequestId</code>
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</p>
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}
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<h3>Development Mode</h3>
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<p>
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Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
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</p>
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<p>
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<strong>The Development environment shouldn't be enabled for deployed applications.</strong>
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It can result in displaying sensitive information from exceptions to end users.
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For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
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and restarting the app.
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</p>

‎Videos/Excel_Formulas/Views/Shared/_Layout.cshtml‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>@ViewData["Title"] - Excel_Formulas</title>
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<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
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<link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
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<link rel="stylesheet" href="~/Excel_Formulas.styles.css" asp-append-version="true" />
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</head>
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<body>
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<header>
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<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
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<div class="container-fluid">
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<a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index">Excel_Formulas</a>
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<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
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aria-expanded="false" aria-label="Toggle navigation">
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<span class="navbar-toggler-icon"></span>
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</button>
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<div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
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<ul class="navbar-nav flex-grow-1">
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<li class="nav-item">
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<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
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</li>
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<li class="nav-item">
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<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
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</li>
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</ul>
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</div>
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</div>
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</nav>
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</header>
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<div class="container">
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<main role="main" class="pb-3">
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@RenderBody()
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</main>
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</div>
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<footer class="border-top footer text-muted">
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<div class="container">
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&copy; 2025 - Excel_Formulas - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
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</div>
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</footer>
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<script src="~/lib/jquery/dist/jquery.min.js"></script>
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<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
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<script src="~/js/site.js" asp-append-version="true"></script>
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@await RenderSectionAsync("Scripts", required: false)
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</body>
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</html>

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