CODEWITHSUNDEEP
c#asp.net-core
MD mohi
MD mohi

Reputation: 43

WebApi .Net Core error as does not contain definition for GetAwaiter

I'm new to .NET Core, and I'm reading this doc https://learn.microsoft.com/en-us/aspnet/core/web-api/?view=aspnetcore-2.1

From there I'm practicing - I write this logic:

public async Task<ActionResult<List<DashBoar>>> GetAllAsync()
{
    var x = _Repo.GetPetsAsync();
    return await x.ToList();
}

But I'm getting an error.

My repo class is

public IEnumerable<DashBoar> GetPetsAsync()
{
    var x = from n in _context.DashBoar
            select n;
    return  x.ToList();
}

Upvotes: 3

Views: 8269

Answers (1)

Asela Liyanage
Asela Liyanage

Reputation: 106

You should first understand what asynchronous programming is and the co-relation of await, async and Task.

Asynchronous programming is used to improve the application performance and enhance the responsiveness. Refer the links at the bottom to get an understanding.

First let's address your problem. Make your repo class return type as a Tak

public async Task<IEnumerable<DashBoar>> GetPetsAsync()
{
     var x = await (from n in _context.DashBoar
             select n).ToListAsync();

     return x;
}

Then call the repo method from GetAllAsync() method as below

public async Task<ActionResult<List<DashBoar>>> GetAllAsync()
{
     var x = await _Repo.GetPetsAsync();
     return x;
}

Please go through the below links To get a better understanding of asynchronous programming.

https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/async/ https://www.youtube.com/watch?v=C5VhaxQWcpE

https://www.dotnetperls.com/async

Good luck..!

Upvotes: 7

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