I was trying to set up running .NET from node.js using the Microsoft guide via dotnet workload install wasm-experimental and dotnet new wasmconsole.

I want to read the vsdx file from .NET, but I have the error:

Error reading file: Could not find a part of the path
‘/home/user/project/src/file.vsdx’

The .Net application:

using System;
using System.IO;
using System.Runtime.InteropServices.JavaScript;
using System.IO.Packaging;
using System.Linq;

return 0;
public partial class MyClass
{
  [JSExport]
  internal static string Greeting()
  {
    try {
      string filePath = "/empty-template.vsdx";

      if (File.Exists(filePath))
      {
        Console.WriteLine("Файл существует по пути: " + filePath);
      }
      else
      {
        Console.WriteLine("Файл не существует по пути: " + filePath);
      }

      try {
        File.ReadAllBytes(filePath);
      }
      catch (Exception ex) {
        Console.WriteLine($"Error reading file: {ex.Message}");
      }
    } catch (Exception ex) {
      Console.WriteLine($"Error opening package: {ex.Message}");
    }

    return "filePath";
  }

The file exists by path.