Add method to get translation language names

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/Microsoft Translator Service/MicrosoftTranslatorPage.xaml

@@ -31,9 +31,9 @@
             <ComboBox x:Name="Languages"
                       Margin="0,10,0,0"
                       HorizontalAlignment="Stretch"
-                      DisplayMemberPath="Value"
+                      DisplayMemberPath="Name"
                       Header="Target Language:"
-                      SelectedValuePath="Key" />
+                      SelectedValuePath="Code" />
             <Button x:Name="Translate"
                     Margin="0,10,0,0"
                     Click="Translate_OnClick"

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/Microsoft Translator Service/MicrosoftTranslatorPage.xaml.cs

@@ -59,26 +59,10 @@ private async void GetLanguages_OnClick(object sender, RoutedEventArgs e)
             Languages.ItemsSource = null;
 
             _translatorClient.SubscriptionKey = TranslatorServiceKey.Text;
-            var languages = await _translatorClient.GetLanguagesAsync();
+            var languages = await _translatorClient.GetLanguageNamesAsync();
 
-            var dictionary = new Dictionary<string, string>();
-            languages.ToList().ForEach(lang =>
-            {
-                try
-                {
-                    var culture = new CultureInfo(lang);
-                    if (!culture.EnglishName.StartsWith("Unknown"))
-                    {
-                        dictionary.Add(lang, culture.EnglishName);
-                    }
-                }
-                catch
-                {
-                }
-            });
-
-            Languages.ItemsSource = dictionary.OrderBy(d => d.Key);
-            Languages.SelectedValue = dictionary.Keys.FirstOrDefault();
+            Languages.ItemsSource = languages.OrderBy(d => d.Name);
+            Languages.SelectedIndex = 0;
 
             Shell.Current.DisplayWaitRing = false;
         }

Microsoft.Toolkit.Uwp.Services/Microsoft.Toolkit.Uwp.Services.csproj

@@ -51,6 +51,7 @@
     <Compile Include="Core\DataProviderBase{TConfig,TSchema}.cs" />
     <Compile Include="Core\ExtensionMethods.cs" />
     <Compile Include="Core\IDataService{T,U,V}.cs" />
+    <Compile Include="Services\MicrosoftTranslator\ServiceLanguage.cs" />
     <Compile Include="Services\Twitter\TwitterStreamCallbacks.cs" />
     <Compile Include="Services\Bing\BingLanguage.cs" />
     <Compile Include="Services\Bing\BingCountry.cs" />

Microsoft.Toolkit.Uwp.Services/Services/MicrosoftTranslator/ITranslatorService.cs

@@ -37,6 +37,15 @@ public interface ITranslatorService
         /// <seealso cref="GetLanguagesAsync"/>
         string Language { get; set; }
 
+        /// <summary>
+        /// Initializes the <see cref="TranslatorService"/> class by getting an access token for the service.
+        /// </summary>
+        /// <returns>A <see cref="Task"/> that represents the initialize operation.</returns>
+        /// <exception cref="ArgumentNullException">The <see cref="SubscriptionKey"/> property hasn't been set.</exception>
+        /// <exception cref="TranslatorServiceException">The provided <see cref="SubscriptionKey"/> isn't valid or has expired.</exception>
+        /// <remarks>Calling this method isn't mandatory, because the token is get/refreshed everytime is needed. However, it is called at startup, it can speed-up subsequest requests.</remarks>
+        Task InitializeAsync();
+
         /// <summary>
         /// Detects the language of a text.
         /// </summary>
@@ -50,7 +59,7 @@ public interface ITranslatorService
         /// </exception>
         /// <exception cref="TranslatorServiceException">The provided <see cref="SubscriptionKey"/> isn't valid or has expired.</exception>
         /// <remarks><para>This method performs a non-blocking request for language detection.</para>
-        /// <para>For more information, go to http://msdn.microsoft.com/en-us/library/ff512427.aspx.
+        /// <para>For more information, go to https://docs.microsofttranslator.com/text-translate.html#!/default/get_Detect.
         /// </para></remarks>
         /// <seealso cref="GetLanguagesAsync"/>
         /// <seealso cref="Language"/>
@@ -63,19 +72,24 @@ public interface ITranslatorService
         /// <exception cref="ArgumentNullException">The <see cref="SubscriptionKey"/> property hasn't been set.</exception>
         /// <exception cref="TranslatorServiceException">The provided <see cref="SubscriptionKey"/> isn't valid or has expired.</exception>
         /// <remarks><para>This method performs a non-blocking request for language codes.</para>
-        /// <para>For more information, go to http://msdn.microsoft.com/en-us/library/ff512415.aspx.
+        /// <para>For more information, go to https://docs.microsofttranslator.com/text-translate.html#!/default/get_GetLanguagesForTranslate.
         /// </para>
         /// </remarks>
         Task<IEnumerable<string>> GetLanguagesAsync();
 
         /// <summary>
-        /// Initializes the <see cref="TranslatorService"/> class by getting an access token for the service.
+        /// Retrieves friendly names for the languages available for text translation.
         /// </summary>
-        /// <returns>A <see cref="Task"/> that represents the initialize operation.</returns>
+        /// <param name="language">The language used to localize the language names. If the parameter is set to <strong>null</strong>, the language specified in the <seealso cref="Language"/> property will be used.</param>
+        /// <returns>An array of <see cref="ServiceLanguage"/> containing the language codes and names supported for translation by <strong>Microsoft Translator Service</strong>.</returns>
         /// <exception cref="ArgumentNullException">The <see cref="SubscriptionKey"/> property hasn't been set.</exception>
         /// <exception cref="TranslatorServiceException">The provided <see cref="SubscriptionKey"/> isn't valid or has expired.</exception>
-        /// <remarks>Calling this method isn't mandatory, because the token is get/refreshed everytime is needed. However, it is called at startup, it can speed-up subsequest requests.</remarks>
-        Task InitializeAsync();
+        /// <remarks><para>This method performs a non-blocking request for language name.</para>
+        /// <para>For more information, go to https://docs.microsofttranslator.com/text-translate.html#!/default/post_GetLanguageNames.
+        /// </para>
+        /// </remarks>
+        /// <see cref="GetLanguagesAsync"/>
+        Task<IEnumerable<ServiceLanguage>> GetLanguageNamesAsync(string language = null);
 
         /// <summary>
         /// Translates a text string into the specified language.
@@ -93,7 +107,7 @@ public interface ITranslatorService
         /// <exception cref="ArgumentException">The <paramref name="text"/> parameter is longer than 1000 characters.</exception>
         /// <exception cref="TranslatorServiceException">The provided <see cref="SubscriptionKey"/> isn't valid or has expired.</exception>
         /// <remarks><para>This method perform a non-blocking request for text translation.</para>
-        /// <para>For more information, go to http://msdn.microsoft.com/en-us/library/ff512421.aspx.
+        /// <para>For more information, go to https://docs.microsofttranslator.com/text-translate.html#!/default/get_Translate.
         /// </para>
         /// </remarks>
         /// <seealso cref="Language"/>
@@ -114,7 +128,7 @@ public interface ITranslatorService
         /// <exception cref="ArgumentException">The <paramref name="text"/> parameter is longer than 1000 characters.</exception>
         /// <exception cref="TranslatorServiceException">The provided <see cref="SubscriptionKey"/> isn't valid or has expired.</exception>
         /// <remarks><para>This method perform a non-blocking request for text translation.</para>
-        /// <para>For more information, go to http://msdn.microsoft.com/en-us/library/ff512421.aspx.
+        /// <para>For more information, go to https://docs.microsofttranslator.com/text-translate.html#!/default/get_Translate.
         /// </para>
         /// </remarks>
         /// <seealso cref="Language"/>

Microsoft.Toolkit.Uwp.Services/Services/MicrosoftTranslator/ServiceLanguage.cs

@@ -0,0 +1,47 @@
+// ******************************************************************
+// Copyright (c) Microsoft. All rights reserved.
+// This code is licensed under the MIT License (MIT).
+// THE CODE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
+// THE CODE OR THE USE OR OTHER DEALINGS IN THE CODE.
+// ******************************************************************
+
+namespace Microsoft.Toolkit.Uwp.Services.MicrosoftTranslator
+{
+    /// <summary>
+    /// Holds information about langagues supported for text translation and speech synthesis.
+    /// </summary>
+    public class ServiceLanguage
+    {
+        /// <summary>
+        /// Gets the language code.
+        /// </summary>
+        public string Code { get; }
+
+        /// <summary>
+        /// Gets the language friendly name.
+        /// </summary>
+        public string Name { get; }
+
+        /// <summary>
+        /// Returns the language friendly name.
+        /// </summary>
+        /// <returns>The language friendly name.</returns>
+        public override string ToString() => Name;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ServiceLanguage"/> class, using the specified code and name.
+        /// </summary>
+        /// <param name="code">The language code.</param>
+        /// <param name="name">The language friendly name.</param>
+        public ServiceLanguage(string code, string name)
+        {
+            Code = code;
+            Name = name;
+        }
+    }
+}