FilePicker class cannot be found in Xamarin project - xamarin

Question

I'm creating a Xamarin forms app which enables user uploads. I have installed the latest version of the Xamarin.Essentials package but the classes and methods which I would expect to be available cannot be found. I can move ahead with the xamarin.plugins.filepicker package but this is not well documented and I would prefer to use the standard library. Any assistance with this would be greatly appreciated! The default is below.
'''
async Task<FileResult> PickAndShow(PickOptions options)
{
try
{
var result = await FilePicker.PickAsync();
if (result != null)
{
Text = $"File Name: {result.FileName}";
if (result.FileName.EndsWith("jpg", StringComparison.OrdinalIgnoreCase) ||
result.FileName.EndsWith("png", StringComparison.OrdinalIgnoreCase))
{
var stream = await result.OpenReadAsync();
Image = ImageSource.FromStream(() => stream);
}
}
}
catch (Exception ex)
{
// The user canceled or something went wrong
}
}
'''

Answer 1

For the Xamarin.Essentials package, update to the latest version on both Xamarin.Form NuGet Package and Android NuGet Package. After that you could fix the errors like below.
Error CS0246 The type or namespace name 'PickOptions' could not be found (are you
missing a using directive or an assembly reference?)
For the usage of Xamarin.Essentials: File Picker, you could check the MS document.
https://learn.microsoft.com/en-us/xamarin/essentials/file-picker?tabs=android
If you wanna the source file, you could download from the link below. https://github.com/xamarin/Essentials/tree/main/Xamarin.Essentials/FilePicker