MudBlazor autocomplete not searching case sensitive. .NET 6 Blazor Server App - autocomplete

Question

Hi I have problems making MudBLazor autocomplete to search a given list.
This list of countries is fetched from a service as List.
I have tried changing the StringComparison.InvariantCultureIgnoreCase to other culture without any luck!
Here is the code:
I really dont understand why autocomplete is not returning a smaller list matching the search string (value). It only matches with case-sensitive letters like Albania not albania.
<MudCard Style="margin-bottom: 20px; width: 600px;">
<MudCardContent>
<label>Sending from:</label>
<MudAutocomplete T="string" Label="Country" #bind-Value="#userCountry" SearchFunc="#SearchFromCountries" />
</MudCardContent>
</MudCard>
#code {
private string userCountry, userToCountry;
public IEnumerable<CountriesCurrencies> countries;
private List<string> countryList;
protected override async Task OnInitializedAsync()
{
userCountry = await countryService.GetUserCountry(userId);
countries = await countryService.GetCountriesList();
countryList = GetCountriesList();
}
private List<string> GetCountriesList()
{
countryList = new List<string>();
foreach (var country in countries)
{
countryList.Add(country.Country);
}
return countryList;
}
private async Task<IEnumerable<string>> SearchFromCountries(string value)
{
await Task.Delay(5);
if (string.IsNullOrEmpty(value))
return countryList;
return await Task.FromResult(countryList.Where(x => x.Contains(value, StringComparison.InvariantCultureIgnoreCase)));
}

Answer 1

Refactor you code as follows and check that you are returning the correct list:
private Task<IEnumerable<string>> SearchFromCountries(string value)
{
if (string.IsNullOrEmpty(value))
return countryList;
var list = countryList.Where(x => x.Contains(value, StringComparison.InvariantCultureIgnoreCase));
// break point here to check what you are returning
return Task.FromResult(list);
}