CefSharp allows you to server an in-app html page via LoadHtml method. Unfortunately all tries serving app related content via this method resulted into blank page. LoadHtml seems to be too inevitable method to load a html content into CefSharp. The only way to make it working as requested is to register a classes derived from ISchemeHandler, ISchemeHandlerFactory (CefSharp sample does it as well).
CustomSchemeHandler class derived from ISchemeHandler
internal class CustomSchemeHandler : ISchemeHandler { private readonly IDictionary<string, string> resources; public CustomSchemeHandler() { resources = new Dictionary<string, string> { { "/page", Resources.inapppage}, }; } public bool ProcessRequestAsync(IRequest request, ISchemeHandlerResponse response, OnRequestCompletedHandler requestCompletedCallback) { // The 'host' portion is entirely ignored by this scheme handler. var uri = new Uri(request.Url); var fileName = uri.AbsolutePath; string resource; if (resources.TryGetValue(fileName, out resource) && !String.IsNullOrEmpty(resource)) { var bytes = Encoding.UTF8.GetBytes(resource); response.ResponseStream = new MemoryStream(bytes); response.MimeType = GetMimeType(fileName); requestCompletedCallback(); return true; } return false; } private string GetMimeType(string fileName) { if (fileName.EndsWith(".css")) return "text/css"; if (fileName.EndsWith(".js")) return "text/javascript"; return "text/html"; } } |
CustomSchemeHandlerFactory class derived from ISchemeHandlerFactory
internal class CustomSchemeHandlerFactory : ISchemeHandlerFactory { public const string SchemeName = "custom"; public ISchemeHandler Create() { return new CustomSchemeHandler(); } } |
Initialization of CustomSchemeHandlerFactory
var settings = new CefSettings(); settings.RegisterScheme(new CefCustomScheme { SchemeName = CustomSchemeHandlerFactory.SchemeName, SchemeHandlerFactory = new CustomSchemeHandlerFactory() }); Cef.Initialize(settings); |
To access the in-app html page chnage browser.Address = „custom://test/Page“.
