ResourceQualifierVectorView Class

Reference

Definition

Namespace:: Windows.ApplicationModel.Resources.Core

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Edit

An unchangeable view into a vector of ResourceQualifier objects.

public ref class ResourceQualifierVectorView sealed : IIterable<ResourceQualifier ^>, IVectorView<ResourceQualifier ^>

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class ResourceQualifierVectorView final : IIterable<ResourceQualifier>, IVectorView<ResourceQualifier>

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class ResourceQualifierVectorView : IEnumerable<ResourceQualifier>, IReadOnlyList<ResourceQualifier>

Public NotInheritable Class ResourceQualifierVectorView
Implements IEnumerable(Of ResourceQualifier), IReadOnlyList(Of ResourceQualifier)

Inheritance: Object Platform::Object IInspectable ResourceQualifierVectorView

Attributes: ContractVersionAttribute MarshalingBehaviorAttribute

Implements: IIterable<T> IEnumerable<T> IIterable<ResourceQualifier> IEnumerable<ResourceQualifier> IVectorView<ResourceQualifier> IReadOnlyList<ResourceQualifier>

Windows requirements

Device family	Windows 10 (introduced in 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v1.0)

Examples

This example is based on scenario 10 of the Application resources and localization sample. See the sample for the complete solution.

private void Scenario10Button_Show_Click(object sender, RoutedEventArgs e)
{
    Button b = sender as Button;
    if (b != null)
    {
        // Use a cloned context for this scenario so that qualifier values set
        // in this scenario don't impact behavior in other scenarios that
        // use a default context for the view (crossover effects between
        // the scenarios will not be expected).
        var context = ResourceContext.GetForCurrentView().Clone();

        var selectedLanguage = Scenario10ComboBox_Language.SelectedValue;
        var selectedScale = Scenario10ComboBox_Scale.SelectedValue;
        var selectedContrast = Scenario10ComboBox_Contrast.SelectedValue;
        var selectedHomeRegion = Scenario10ComboBox_HomeRegion.SelectedValue;

        if (selectedLanguage != null)
        {
            context.QualifierValues["language"] = selectedLanguage.ToString();
        }
        if (selectedScale != null)
        {
            context.QualifierValues["scale"] = selectedScale.ToString();
        }
        if (selectedContrast != null)
        {
            context.QualifierValues["contrast"] = selectedContrast.ToString();
        }
        if (selectedHomeRegion != null)
        {
            context.QualifierValues["homeregion"] = selectedHomeRegion.ToString();
        }
        Scenario10_SearchMultipleResourceIds(context, new string[] { "LanguageOnly", "ScaleOnly", "ContrastOnly", "HomeRegionOnly", "MultiDimensional" });
    }
}

void Scenario10_SearchMultipleResourceIds(ResourceContext context, string[] resourceIds)
{
    this.Scenario10TextBlock.Text = "";
    var dimensionMap = ResourceManager.Current.MainResourceMap.GetSubtree("dimensions");

    foreach (var id in resourceIds)
    {
        NamedResource namedResource;
        if (dimensionMap.TryGetValue(id, out namedResource))
        {
            var resourceCandidates = namedResource.ResolveAll(context);
            Scenario10_ShowCandidates(id, resourceCandidates);
        }
    }
}

void Scenario10_ShowCandidates(string resourceId, IReadOnlyList<ResourceCandidate> resourceCandidates)
{
    // Print 'resourceId', 'found value', 'qualifier info', 'matching condition'
    string outText = "resourceId: dimensions\\" + resourceId + "\r\n";
    int i = 0;
    foreach (var candidate in resourceCandidates)
    {
        var value = candidate.ValueAsString;
        outText += "    Candidate " + i.ToString() + ":" + value + "\r\n";
        int j = 0;
        foreach (var qualifier in candidate.Qualifiers)
        {
            var qualifierName = qualifier.QualifierName;
            var qualifierValue = qualifier.QualifierValue;
            outText += "        Qualifier: " + qualifierName + ": " + qualifierValue + "\r\n";
            outText += "        Matching: IsMatch (" + qualifier.IsMatch.ToString() + ")  " + "IsDefault (" + qualifier.IsDefault.ToString() + ")" + "\r\n";
            j++;
        }
        i++;
    }

    this.Scenario10TextBlock.Text += outText + "\r\n";
}

void SDKTemplate::Scenario10::Scenario10Button_Show_Click(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
{
    Button^ b = safe_cast<Button^>(sender);
    if (b != nullptr)
    {
        // use a cloned context for this scenario so that qualifier values set
        // in this scenario don't impact behavior in other scenarios that
        // use a default context for the view (crossover effects between
        // the scenarios will not be expected)
        auto context = ResourceContext::GetForCurrentView()->Clone();

        auto selectedLanguage = Scenario10ComboBox_Language->SelectedValue;
        auto selectedScale = Scenario10ComboBox_Scale->SelectedValue;
        auto selectedContrast = Scenario10ComboBox_Contrast->SelectedValue;
        auto selectedHomeRegion = Scenario10ComboBox_HomeRegion->SelectedValue;

        if (selectedLanguage != nullptr)
        {
            context->QualifierValues->Insert("language", selectedLanguage->ToString());
        }
        if (selectedScale != nullptr)
        {
            context->QualifierValues->Insert("scale", selectedScale->ToString());
        }
        if (selectedContrast != nullptr)
        {
            context->QualifierValues->Insert("contrast", selectedContrast->ToString());
        }
        if (selectedHomeRegion != nullptr)
        {
            context->QualifierValues->Insert("homeregion", selectedHomeRegion->ToString());
        }

        Platform::Collections::Vector<String^>^ resourceIds = ref new Platform::Collections::Vector<String^>();
        //auto resourceIds = new list<String^>();
        resourceIds->Append("LanguageOnly");
        resourceIds->Append("ScaleOnly");
        resourceIds->Append("ContrastOnly");
        resourceIds->Append("HomeRegionOnly");
        resourceIds->Append("MultiDimensional");
        Scenario10_SearchMultipleResourceIds(context, resourceIds);
    }
}

void SDKTemplate::Scenario10::Scenario10_SearchMultipleResourceIds(ResourceContext^ context, Platform::Collections::Vector<String^>^ resourceIds)
{
    Scenario10TextBlock->Text = "";
    auto dimensionMap = ResourceManager::Current->MainResourceMap->GetSubtree("dimensions");

    for (unsigned int it = 0; it < resourceIds->Size; it++)
    {
        String^ id = resourceIds->GetAt(it);
        NamedResource^ namedResource = dimensionMap->Lookup(id);
        if (namedResource)
        {
            auto resourceCandidates = namedResource->ResolveAll(context);
            Scenario10_ShowCandidates(resourceIds->GetAt(it), resourceCandidates);
        }
    }
}

void SDKTemplate::Scenario10::Scenario10_ShowCandidates(String^ resourceId, Windows::Foundation::Collections::IVectorView<ResourceCandidate^>^ resourceCandidates)
{
    // print 'resourceId', 'found value', 'qualifier info', 'matching condition'
    String^ outText = "resourceId: dimensions\\" + resourceId + "\r\n";

    for(unsigned int i =0; i < resourceCandidates->Size; i++)
    {
        ResourceCandidate^ candidate = resourceCandidates->GetAt(i);
        auto value = candidate->ValueAsString;

        outText += "    Candidate " + i.ToString() + ":" + value + "\r\n";
        for (unsigned int j = 0; j < candidate->Qualifiers->Size; j++)
        {
            auto qualifier = candidate->Qualifiers->GetAt(j);
            auto qualifierName = qualifier->QualifierName;
            auto qualifierValue = qualifier->QualifierValue;
            outText += "        Qualifier: " + qualifierName + ": " + qualifierValue + "\r\n";
            outText += "        Matching: IsMatch (" + qualifier->IsMatch.ToString() + ")  " + "IsDefault (" + qualifier->IsDefault.ToString() + ")" + "\r\n";
        }
    }
    this->Scenario10TextBlock->Text += outText + "\r\n";
}

Remarks

Enumerating the collection in C# or Microsoft Visual Basic

A ResourceQualifierVectorView is enumerable, so you can use language-specific syntax such as foreach in C# to enumerate the items in the collection. The compiler does the type-casting for you and you won't need to cast to IEnumerable<ResourceQualifier> explicitly. If you do need to cast explicitly, for example if you want to call GetEnumerator, cast to IEnumerable<T> with a ResourceQualifier constraint.

Properties

Size	Gets the number of ResourceQualifier objects in the view.

Methods

First()	Returns an iterator to enumerate the items in the view.
GetAt(UInt32)	Returns the ResourceQualifier at the specified index in the view.
GetMany(UInt32, ResourceQualifier[])	Returns the ResourceQualifier objects that start at the specified index in the view.
IndexOf(ResourceQualifier, UInt32)	Returns the index of a specified ResourceQualifier in the view.

Applies to

Jaa