Xamarin Forms - Select and display Images

Question

I am developing an application in Xamarin Forms and I am in need of a functionality in which the user can choose an image from the gallery and that this image can be displayed in an Image control in the application. I’m working with the Mediaplugin and have also experienced the Filepicker, but so far none of them have worked for me. So I need a good tip to know how to work with images in Xamarin Forms.

FILEPICKER

Calling the method

public async void SelecionarImagem(object sender, EventArgs e)
    {
        try
        {
            carregarImagem.CarregaImagem();
            imgAgencia.Source = carregarImagem.fileNameFoto;

            if (!string.IsNullOrEmpty(carregarImagem.fileDataImage.FileName))
            {
                imgAgencia.Source = carregarImagem.fileDataImage.FileName;
                await DisplayAlert("Exception", carregarImagem.fileDataImage.FileName, "OK");
            }
        }
        catch (Exception ex)
        {
            await DisplayAlert("Exception", ex.Message, "OK");
        }
    }

Implementation

public FileData fileDataImage { get; set; }

    public async void CarregaImagem()
    {
        FileData filedata = await CrossFilePicker.Current.PickFile();

        while (fileDataImage.FileName.Equals(null))
        {
            continue;
        }

        fileDataImage = filedata;
    }

This one always gives an exception. I did my debug and saw that it tries to assign the result of the selection even before I select an image from the gallery.