Fix #30 Client-side Routing Broken in Preview6

Oqtane.Client/Shared/SiteRouter.razor

@@ -8,6 +8,8 @@
 @using Microsoft.AspNetCore.Components.Routing
 @inject SiteState SiteState
 @inject IUriHelper UriHelper
+@inject INavigationInterception NavigationInterception
+@inject IComponentContext ComponentContext
 @inject IJSRuntime jsRuntime
 @inject IAliasService AliasService
 @inject ITenantService TenantService
@@ -17,6 +19,7 @@
 @inject IModuleService ModuleService
 @inject IModuleDefinitionService ModuleDefinitionService
 @inject IThemeService ThemeService
+@implements IHandleAfterRender
 
 @DynamicComponent
 
@@ -26,9 +29,11 @@
 
 [Parameter] Action<PageState> OnStateChange { get; set; }
 
-    RenderFragment DynamicComponent { get; set; }
-    private string _absoluteUri;
 PageState pagestate;
+RenderFragment DynamicComponent { get; set; }
+
+string _absoluteUri;
+bool _navigationInterceptionEnabled;
 
 protected override void OnInit()
 {
@@ -240,12 +245,17 @@
 private async void OnLocationChanged(object sender, LocationChangedEventArgs args)
 {
     _absoluteUri = args.Location;
-        await LocationChanged();
+    await Refresh();
 }
 
-    public async Task LocationChanged()
+Task IHandleAfterRender.OnAfterRenderAsync()
 {
-        await Refresh();
+    if (!_navigationInterceptionEnabled && ComponentContext.IsConnected)
+    {
+        _navigationInterceptionEnabled = true;
+        return NavigationInterception.EnableNavigationInterceptionAsync();
+    }
+    return Task.CompletedTask;
 }
 
 private Dictionary<string, string> ParseQueryString(string path)