I want to add some cors policy in my blazorwasm app template.
After generating the app using "dotnet new blazorwasm", according to https://learn.microsoft.com/en-us/aspnet/core/security/cors?view=aspnetcore-6.0 I add this line to Program.cs:
builder.Services.AddCors(...);
but it gave this compile error:
error CS1061: 'IServiceCollection' does not contain a definition for 'AddCors' and no accessible extension method 'AddCors' accepting a first argument of type 'IServiceCollection' could be found
It seems to be a balzor-wasm problem because if I start by "blazorserver" template it's OK.
After a little investigation I found that the 'CorsServiceCollectionExtensions' class (and many other ASP APIs) are not available. I even tried
dotnet add package Microsoft.AspNetCore.App.Ref
to add the nuget package manullay but that gave
error: Package 'Microsoft.AspNetCore.App.Ref' is incompatible with 'all' frameworks in project
As #HenkHolterman mentioned in comments, CORS is a Server feature. I was mixing Server/Client concept in Blazor. In fact I should add CORS in my web server that will host my blazor app (that could be an asp server or whatever else)
For example while creating an app using template of "blazorwasm" adding "--hosted" (dotnet new blazorwasm --hosted) will generate an asp server app too that is the right place to call AddCors
Related
I am just starting with Meteor and working on an existing project. I am running into an issue with one of the packages(observatory-apollo) that's has the following line:
__meteor_bootstrap__.app.use Observatory.logger #TLog.useragent
It is complaining that __meteor_bootstrap__.app is undefined.
What is __meteor_boostrap__ exactly? I can't seem to find a description of what it is but from threads, people seem to know how to use it. I can only see it defined in boot.js, but it doesn't really tell me much...
Meteor uses connect npm module under the hood for various reasons, to serve static files, for example. __meteor_bootstrap__.app was the reference to connect app instance.
Before it was __meteor_bootstrap__.app but it changed couple of releases ago and became WebApp.connectHandlers object and is part of WebApp package.
WebApp is a standard package of Meteor, core package for building webapps. You don't usually need to add explicitly as it is a dependency of standard-app-packages.
Example of usage the connectHandlers is to inject connect middlewares in the same way as you would use any connect middleware (or some express middlewares, express is built on top of connect):
WebApp.connectHandlers
.use(connect.query())
.use(this._config.requestParser(bodyParser))
You can look at meteor-router Atmosphere package and take it as an example: https://github.com/tmeasday/meteor-router/blob/master/lib/router_server.js
More about connect: https://npmjs.org/package/connect
In my project, I included Webservice files, when I tried to run, I got this error in Chrome browser.
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0029: Cannot implicitly convert type 'Unified.WebService.GetOrder [c:\Users\Venkatesh\AppData\Local\Temp\Temporary ASP.NET Files\root\417f2571\29df25a\assembly\dl3\1f05470e\0779ccf4_47dfcd01_0\WasteManagement.DLL]' to 'Unified.WebService.GetOrder [c:\Users\Venkatesh\Desktop\Venkateshwar\Company Related\Waste Management - Copy\WasteManagement\WasteManagement\App_Code\GetOrder.cs(8)]'
Source Error:
Line 43: public GetOrder retrieveOrder(string orderNumber)
Line 44: {
//Calling Web service method in my class
Line 45:/*ERROR*/ return connection.getOrder(orderNumber);
Line 46: }
Line 47:
When I clicked Compiler Warning Messages, it is showing error in all the connections which were through Web service.
If necessary, I will share the code too. (As I am new to asp.net, I cant understand which part of code to share. So, please mention which part of code you want, if needed.)
Your Web-service should be independent project in your solution. After that you should add Web Reference for it, and after that you can safely call it.
Web Service is not a basic class you cann add and use - it is a different thing, so you can't simply add it to your App_Code folder to make it work.
From MSDN:
Web service discovery is the process by which a client locates a Web service and obtains its service description. The process of Web service discovery in Visual Studio involves interrogating a Web site following a predetermined algorithm. The goal of the process is to locate the service description, which is an XML document that uses the Web Services Description Language (WSDL).
The service description describes what services are available and how to interact with those services. Without a service description, it is impossible to programmatically interact with a Web service.
Edit:
Yes, you can remove [WebMethod] attributes, etc, from web service declaration, and temporary use it like class, but after that you still have to add a Web reference for it to use it like Web Service.
I am building my site with a web deployment project but the build fails with a number of errors all relating to the "#include virtual" directives in my master page.
The includes are necessary to import a set of centrally managed html template files.
Here is an example of the include directive and associated error:
<!-- #include virtual="/v3/sits/pdpdev/assets-templates/inc/head.html" -->
/PDPRegistration.csproj/Pages/ContentPage.Master(15):
error ASPPARSE: Failed to map the path
'/v3/sits/pdpdev/assets-templates/inc/head.html'.
The error for each included file actually appears multiple times. I'm not sure what is being mapped or why, but this was never a problem until I started using WDP (which I wanted to alter web.config depending on the build environment, among other things.)
The project is built locally on my PC and then copied to the web server via a mapped drive. I found a few solutions on the 'net involving IIS metabase - they weren't quite clear to me, and I'm not sure if they apply given how I build and deploy the project (that is, would I have to build on the same system as IIS in order to make use of the metabase?)
Can anyone suggest how I can get my project to build with WDP?
Although SSI's are available within the Framework, the preferred way of doing include is to wrap the content from the file into a User Control (.ascx) as per the MSDN documentation See also: support.microsoft.com/kb/306575
I have a local website which I run through Visual Studio 2008's internal development web server (through the run / compile button).
I have an external library which is referenced on a page of that website and resides inside the web site's "bin" folder.
I've recently changed a class' property name inside that library (renaming it, from "ValidFrom" to "VisibleFrom"), recompiled its dll and have overwritten the original dll inside the bin folder.
This class is mapped with FluentNHibernate, I've also changed the mappings and recompiled / redeployed the library.
When I try to run the site and navigate to the page where the library is used, I'm getting a MethodNotFound exception for the method get_ValidFrom, related to FluentNHibernate's configuration call. This should be get_VisibleFrom now!
Now I've reconfigured my NHibernate SessionProvider so that it generates a new Configuration for NHibernate on each call, and does not retrieve it from the Http Session entity like it did before, because I figured there might lie the problem.
I'm still getting the exception however. I've then deleted the Temporary ASP.NET folder's content... but I'm still getting the error.
Where is the generated schema for NHibernate stored, when using FluentNHibernate?
Anyone knows where else this could somehow be cached?
Thanks
FNH does not cache the schema, it is generated on-the-fly when you make a call to Fluently.Configure() and the schema is passed directly into an NHibernate Configuration object which is used to build an ISessionFactory.
Try clearing out all compiled objects/libraries/executables, removing the reference to your library from all projects that use it, add it back in, and then re-compile everything. Also check your all your code for "magic strings" that may be referencing this property or causing it to be referenced by the old name.
If that doesn't work, it might be helpful to see a stack trace to get an idea of what is being called from where.
I've a simple, if not primitive, C++/CLI .NET 2.0 class library. It is used in order to wrap some C++ legacy code for the Web Service. The following facts appear to be true:
Primitive C# test program calls class library and it works.
If class library does not refer to any modules of our code base, it works as well as part of the web service. That is, I load the web service and invoke the methods and receive proper response.
The same moment I replace the copied and pasted code by the calls from our code base libraries, the Web Service stops to load. I get System.IO.FileNotFoundException message.
The problem: I cannot find any place where the file name that couldn't be found is written.
I googled it and gave some permissions to some ASP.NET user on my computer. I copied all the DLLs of our libraries into the same directory where web service is installed. I searched in IIS logs, event logs, etc - no where could I find the name of the module that prevents the web service from coming up.
Any help on the matter would be greatly appreciated.
Boris
Make sure all the dependent DLLs are in the path (Path meaning not the directory where your assembly is, because ASP.net copies your assembly away into a temporary folder, but rather a directory that's included in the System path environment variable).
What calls are you replacing? Could it be the original code gracefully handles missing files (which may not even be important) and yours does not?
Add same rights to the iusr-account that you did to the asp.net-account.