Fixed some CS1572, 1573, 1574 and 1591 warnings

src/Forms/Prism.Forms/Navigation/INavigationServiceExtensions.cs

@@ -13,6 +13,7 @@ public static class INavigationServiceExtensions
         /// <summary>
         /// Navigates to the most recent entry in the back navigation history by popping the calling Page off the navigation stack.
         /// </summary>
+        /// <param name="navigationService">Service for handling navigation between views</param>
         /// <param name="parameters">The navigation parameters</param>
         /// <param name="useModalNavigation">If <c>true</c> uses PopModalAsync, if <c>false</c> uses PopAsync</param>
         /// <param name="animated">If <c>true</c> the transition is animated, if <c>false</c> there is no animation on transition.</param>
@@ -37,6 +38,7 @@ public static Task<INavigationResult> GoBackToRootAsync(this INavigationService
         /// <summary>
         /// Initiates navigation to the target specified by the <paramref name="name"/>.
         /// </summary>
+        /// <param name="navigationService">Service for handling navigation between views</param>
         /// <param name="name">The name of the target to navigate to.</param>
         /// <param name="parameters">The navigation parameters</param>
         /// <param name="useModalNavigation">If <c>true</c> uses PushModalAsync, if <c>false</c> uses PushAsync</param>
@@ -50,6 +52,7 @@ public static Task<INavigationResult> NavigateAsync(this INavigationService navi
         /// <summary>
         /// Initiates navigation to the target specified by the <paramref name="uri"/>.
         /// </summary>
+        /// <param name="navigationService">Service for handling navigation between views</param>
         /// <param name="uri">The Uri to navigate to</param>
         /// <param name="parameters">The navigation parameters</param>
         /// <param name="useModalNavigation">If <c>true</c> uses PopModalAsync, if <c>false</c> uses PopAsync</param>
@@ -87,6 +90,7 @@ public static string GetNavigationUriPath(this INavigationService navigationServ
         /// <summary>
         /// Navigates to the most recent entry in the back navigation history by popping the calling Page off the navigation stack.
         /// </summary>
+        /// <param name="navigationService">Service for handling navigation between views</param>
         /// <param name="parameters">The navigation parameters</param>
         /// <returns><see cref="INavigationResult"/> indicating whether the request was successful or if there was an encountered <see cref="Exception"/>.</returns>
         public static Task<INavigationResult> GoBackAsync(this INavigationService navigationService, params (string Key, object Value)[] parameters)
@@ -97,6 +101,7 @@ public static Task<INavigationResult> GoBackAsync(this INavigationService naviga
         /// <summary>
         /// Initiates navigation to the target specified by the <paramref name="name"/>.
         /// </summary>
+        /// <param name="navigationService">Service for handling navigation between views</param>
         /// <param name="name">The Uri to navigate to</param>
         /// <param name="parameters">The navigation parameters</param>
         /// <returns><see cref="INavigationResult"/> indicating whether the request was successful or if there was an encountered <see cref="Exception"/>.</returns>
@@ -112,6 +117,7 @@ public static Task<INavigationResult> NavigateAsync(this INavigationService navi
         /// <summary>
         /// Initiates navigation to the target specified by the <paramref name="uri"/>.
         /// </summary>
+        /// <param name="navigationService">Service for handling navigation between views</param>
         /// <param name="uri">The Uri to navigate to</param>
         /// <param name="parameters">The navigation parameters</param>
         /// <returns><see cref="INavigationResult"/> indicating whether the request was successful or if there was an encountered <see cref="Exception"/>.</returns>

src/Forms/Prism.Forms/Navigation/PageNavigationService.cs

@@ -173,7 +173,6 @@ Task<INavigationResult> IPlatformNavigationService.GoBackToRootAsync(INavigation
         /// <summary>
         /// When navigating inside a NavigationPage: Pops all but the root Page off the navigation stack
         /// </summary>
-        /// <param name="navigationService">The INavigatinService instance</param>
         /// <param name="parameters">The navigation parameters</param>
         /// <remarks>Only works when called from a View within a NavigationPage</remarks>
         protected async virtual Task<INavigationResult> GoBackToRootInternal(INavigationParameters parameters)

src/Forms/Prism.Forms/Navigation/TabbedPages/INavigationServiceExtensions.cs

@@ -10,6 +10,7 @@ public static class INavigationServiceExtensions
         /// <summary>
         /// Selects a Tab of the TabbedPage parent.
         /// </summary>
+        /// <param name="navigationService">Service for handling navigation between views</param>
         /// <param name="name">The name of the tab to select</param>
         /// <param name="parameters">The navigation parameters</param>
         public static async Task<INavigationResult> SelectTabAsync(this INavigationService navigationService, string name, INavigationParameters parameters = null)

src/Forms/Prism.Unity.Forms/PrismApplication.cs

@@ -4,6 +4,9 @@
 [assembly: Xamarin.Forms.XmlnsDefinition("http://prismlibrary.com", "Prism.Unity")]
 namespace Prism.Unity
 {
+    /// <summary>
+    /// Base class for PrismApplication
+    /// </summary>
     public abstract class PrismApplication : PrismApplicationBase
     {
         /// <summary>

src/Prism.Core/Common/ParametersBase.cs

@@ -7,14 +7,24 @@
 
 namespace Prism.Common
 {
+    /// <summary>
+    /// Base class for Navigation parameters
+    /// </summary>
     public abstract class ParametersBase : IEnumerable<KeyValuePair<string, object>>
     {
         private readonly List<KeyValuePair<string, object>> _entries = new List<KeyValuePair<string, object>>();
 
+        /// <summary>
+        /// Default constructor
+        /// </summary>
         protected ParametersBase()
         {
         }
 
+        /// <summary>
+        /// Constructs a list of parameters
+        /// </summary>
+        /// <param name="query">Query string to be parsed</param>
         protected ParametersBase(string query)
         {
             if (!string.IsNullOrWhiteSpace(query))
@@ -58,6 +68,12 @@ protected ParametersBase(string query)
             }
         }
 
+        /// <summary>
+        /// Searches Parameter collection and returns value if Collection contains key.
+        /// Otherswise returns null.
+        /// </summary>
+        /// <param name="key"></param>
+        /// <returns></returns>
         public object this[string key]
         {
             get
@@ -74,32 +90,72 @@ public object this[string key]
             }
         }
 
+        /// <summary>
+        /// The count, or number, of parameters in collection
+        /// </summary>
         public int Count => _entries.Count;
 
+        /// <summary>
+        /// Returns an IEnumerable of the Keys in the collection
+        /// </summary>
         public IEnumerable<string> Keys => 
             _entries.Select(x => x.Key);
 
+        /// <summary>
+        /// Adds the KeyValuePair to the Collection
+        /// </summary>
+        /// <param name="key"></param>
+        /// <param name="value"></param>
         public void Add(string key, object value) =>
             _entries.Add(new KeyValuePair<string, object>(key, value));
 
+        /// <summary>
+        /// Checks collection for presense of key
+        /// </summary>
+        /// <param name="key"></param>
+        /// <returns>True if key exists; else returns false.</returns>
         public bool ContainsKey(string key) =>
             _entries.ContainsKey(key);
 
+        /// <summary>
+        /// Gets an enumerator for the KeyValuePairs in parameter collection
+        /// </summary>
+        /// <returns>Enumerator</returns>
         public IEnumerator<KeyValuePair<string, object>> GetEnumerator() =>
             _entries.GetEnumerator();
-
+        /// <summary>
+        /// Returns the value of the member referenced by key
+        /// </summary>
+        /// <typeparam name="T">The type of object to be returned</typeparam>
+        /// <param name="key"></param>
+        /// <returns></returns>
         public T GetValue<T>(string key) => 
             _entries.GetValue<T>(key);
 
+        /// <summary>
+        /// Returns an IEnumerable of all parameters 
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="key"></param>
         public IEnumerable<T> GetValues<T>(string key) =>
             _entries.GetValues<T>(key);
 
+        /// <summary>
+        /// Checks to see if the parameter collection contains the value
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="key"></param>
+        /// <param name="value">Value of the returned parameter if it exists</param>
         public bool TryGetValue<T>(string key, out T value) =>
             _entries.TryGetValue(key, out value);
 
         IEnumerator IEnumerable.GetEnumerator() =>
             GetEnumerator();
 
+        /// <summary>
+        /// Converts parameter collection to a parameter string
+        /// </summary>
+        /// <returns></returns>
         public override string ToString()
         {
             var queryBuilder = new StringBuilder();
@@ -129,6 +185,10 @@ public override string ToString()
             return queryBuilder.ToString();
         }
 
+        /// <summary>
+        /// Adds a collection of parameters to the local parameter list
+        /// </summary>
+        /// <param name="parameters"></param>
         [EditorBrowsable(EditorBrowsableState.Never)]
         public void FromParameters(IEnumerable<KeyValuePair<string, object>> parameters) =>
             _entries.AddRange(parameters);

src/Prism.Core/Modularity/IModuleInfo.cs

@@ -2,13 +2,36 @@
 
 namespace Prism.Modularity
 {
-    public interface IModuleInfo : IModuleCatalogItem
+    /// <summary>
+    /// Set of properties for each Module
+    /// </summary>
+public interface IModuleInfo : IModuleCatalogItem
     {
+        /// <summary>
+        /// The modules this instance depends on.
+        /// </summary>
         Collection<string> DependsOn { get; set; }
+        /// <summary>
+        /// When Prism should Initialize the module
+        /// <see cref="InitializationMode"/>
+        /// </summary>
         InitializationMode InitializationMode { get; set; }
+        /// <summary>
+        /// The name of the module
+        /// </summary>
         string ModuleName { get; set; }
+        /// <summary>
+        /// The module's type
+        /// </summary>
         string ModuleType { get; set; }
+        /// <summary>
+        /// A string ref for the module for registration/resolution
+        /// </summary>
         string Ref { get; set; }
+        /// <summary>
+        /// An enum that lists the modules state
+        /// <see cref="ModuleState"/>
+        /// </summary>
         ModuleState State { get; set; }
     }
 }

src/Prism.Core/Modularity/IModuleInfoGroup.cs

@@ -4,10 +4,20 @@
 namespace Prism.Modularity
 {
     // IList must be supported in Silverlight 2 to be able to add items from XAML
+    /// <summary>
+    /// A collection of <see cref="ModuleInfo"/> for the Modules used by the application
+    /// </summary>
     public interface IModuleInfoGroup : IModuleCatalogItem, IList<IModuleInfo>, IList
     {
+        /// <summary>
+        /// When Prism should Initialize the module
+        /// <see cref="InitializationMode"/>
+        /// </summary>
         InitializationMode InitializationMode { get; set; }
 
+        /// <summary>
+        /// A string ref for the module for registration/resolution
+        /// </summary>
         string Ref { get; set; }
     }
 }

src/Wpf/Prism.DryIoc.Wpf/Legacy/DryIocExtensions.cs

@@ -10,6 +10,7 @@ public static class DryIocExtensions
         /// Registers an object for navigation.
         /// </summary>
         /// <typeparam name="T">The Type of the object to register</typeparam>
+        /// <param name="container">The container instance</param>
         /// <param name="name">The unique name to register with the object</param>
         public static void RegisterTypeForNavigation<T>(this IContainer container, string name = null)
         {