Issue to add task code to the class

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Issue to add task code to the class

Peter Liang 3,286

Hi,

I want to add the task code like

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into the following. What to adjust?

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AgaveJoe 31,186 Reputation points

2026-04-04T11:26:46.6633333+00:00
This is a classic Peter question where you ask the community to perform a specific task to solve a problem but the approach is nonsensical. Rather than asking a vague question which requires 40 responses, please follow the forum rule for asking a good questions.

You've posted incomplete code (and an empty class) so we have no idea what you're doing. The method name DownloadAndShareFileAsync suggests you are still confused about how file handling works. Downloaded files are not "shared"—they are copied to local storage. This fact has been thoroughgoingly discussed in your many previous threads on this subject.

public async Task DownloadAndShareFileAsync(string fileUrl, string fileName) { try { // We don't know what you are thinking here because the code is incomplete.

We need to clarify your terminology:

Are you trying to SAVE the file? If you want the file to sit on the phone so the user can open it later, you use File.WriteAllBytes. You do not need the "Share" API for this.

Are you trying to SHARE the file? If you want to pop up a menu so the user can email the file to someone else, the file must already exist on the device. You cannot share a file that is still sitting on a server.

The Web API factor: If fileName is just a string you are sending to a server to tell it which file to send back, then fileName is not a "file"—it is just a piece of text.

The "Empty Class" Issue: You posted a namespace and a class with nothing in it:

namespace MauiApp10_1 { internal class Code1 { } }

You cannot simply drop a method into a project and expect it to work if the logic inside the method is fundamentally broken.

Please provide:

The actual code inside your try block.

The framework you are using (MAUI, Xamarin, or Blazor).

A clear explanation of what "Share" means to you: Does it mean "Save to the phone" or "Send to another app"?

Stop posting images of code and post the actual text and the actual error messages you are seeing.

If you are looking for async/await asynchronous programming patterns, then follow the patterns found in the official documentation.

https://dotnet.territoriali.olinfo.it/en-us/dotnet/csharp/asynchronous-programming/

https://dotnet.territoriali.olinfo.it/en-us/dotnet/csharp/asynchronous-programming/async-scenarios

https://dotnet.territoriali.olinfo.it/en-us/dotnet/csharp/asynchronous-programming/task-asynchronous-programming-model

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Answer 1

Marcin Policht 85,250 MVP Volunteer Moderator

You already have a valid class, so to “add task code” you don’t need to change the structure—just add an async method inside the class and make sure you import System.Threading.Tasks.

Try the following

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Maui.ApplicationModel.DataTransfer;
using Microsoft.Maui.Storage;

namespace MauiApp10_1
{
    internal class Code1
    {
        public async Task DoSomethingAsync()
        {
            await Task.Delay(1000);
            Console.WriteLine("Task completed");
        }
    }
}

If your task involves MAUI features like sharing or storage, place that logic inside the async method:

public async Task ShareTextAsync()
{
    await Share.RequestAsync(new ShareTextRequest
    {
        Text = "Hello from MAUI",
        Title = "Share"
    });
}

If this method needs to be called from UI (like a button), make sure the caller is also async:

await new Code1().DoSomethingAsync();

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

Peter Liang 3,286 Reputation points

2026-04-04T13:47:34.27+00:00

Thanks to all.

My only issue now is to add the code of "public async Task ..." into that "internal class Code1". How to make it possible?
Marcin Policht 85,250 Reputation points MVP Volunteer Moderator

2026-04-04T14:15:38.53+00:00
You can add a public async Task method directly inside your internal class Code1 by placing it between the opening { and closing } of the class. Make sure that any async calls inside it use await. For example, your class can look like this:

using System; using System.Collections.Generic; using System.Text; using System.Threading.Tasks; using Microsoft.Maui.ApplicationModel.DataTransfer; using Microsoft.Maui.Storage; namespace MauiApp10_1 { internal class Code1 { public async Task DoSomethingAsync() { await Task.Delay(1000); // Example async operation Console.WriteLine("Task completed"); } } }

This makes the async method part of the class and callable from other code. You don’t need to change the class type (internal) or namespace—just insert your method inside the class braces. If your method uses MAUI features like Share.RequestAsync, just include that inside the method instead of the example Task.Delay.

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

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