asp.net-core

问题 I have a same domain, one of them is domain without prefix www. For example, https://www.example.com https://example.com First domain works fine because it is default domain. But second one has gives error when I do CRUD or accessing any api service. Access to XMLHttpRequest at 'https://www.example.com/hubCon/negotiate' from origin 'https://example.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The value of the 'Access-Control-Allow

问题 I have a same domain, one of them is domain without prefix www. For example, https://www.example.com https://example.com First domain works fine because it is default domain. But second one has gives error when I do CRUD or accessing any api service. Access to XMLHttpRequest at 'https://www.example.com/hubCon/negotiate' from origin 'https://example.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The value of the 'Access-Control-Allow

问题 I am having trouble with this error when Adding new migration. The filter expression 'e => Not(e.IsDeleted)' cannot be specified for entity type 'Babysitter'. A filter may only be applied to the root entity type in a hierarchy. What I am doing is that I have 2 classes Babysitter and Parent that both need to be ApplicationUsers, because they have different properties. So I made them inherit the ApplicationUser class and extended them. This is the ApplicationUser class. public class

问题 I get why .Net Framework could cause issues in .Net Core, IE because an API specific to the Windows platform doesn't exist. But why wouldn't you be able to directly reference .Net Core as a library in .Net Framework? If .Net Core runs on windows, what is preventing a .Net Framework app from using .Net Core as if it were a library? I'm aware that you can port the .Net Core library to a .Net Standard Library, but my question is why .Net Framework can't just reference anything written in .Net

问题 I get why .Net Framework could cause issues in .Net Core, IE because an API specific to the Windows platform doesn't exist. But why wouldn't you be able to directly reference .Net Core as a library in .Net Framework? If .Net Core runs on windows, what is preventing a .Net Framework app from using .Net Core as if it were a library? I'm aware that you can port the .Net Core library to a .Net Standard Library, but my question is why .Net Framework can't just reference anything written in .Net

问题 One way of configuring startup.cs is to check the environment based on an environmental variable, and run the appropriate code within the Configure method: // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler("/Home/Error"); // The default HSTS value is 30 days. You may want to

问题 In my .NET Core project, in the response of all controllers, the object fields are coming in lower case in the first one or two letters of the field name : { "iD_PARAM": "foo", "cD_PROM": "bar", "txT_OFFICER": "lorem", "cN_NEW_PARAM": "fubá", "iD_SITUATION": "XX", "iD_NEW_USER": "ipsun", } It's strange, because the model has all fields in UPPER case: public partial class MyModel { public long ID_PARAM { get; set; } public long CD_PROM { get; set; } public string TXT_OFFICER { get; set; }

问题 In my .NET Core project, in the response of all controllers, the object fields are coming in lower case in the first one or two letters of the field name : { "iD_PARAM": "foo", "cD_PROM": "bar", "txT_OFFICER": "lorem", "cN_NEW_PARAM": "fubá", "iD_SITUATION": "XX", "iD_NEW_USER": "ipsun", } It's strange, because the model has all fields in UPPER case: public partial class MyModel { public long ID_PARAM { get; set; } public long CD_PROM { get; set; } public string TXT_OFFICER { get; set; }

问题 I'm using asp.net core with react/redux and i'm trying to move my config data that is in react/redux into the appsettings.json file. But once the config data has been moved; how is the config data accessible to the ClientApp? I'm using the Reactjs with Redux starter for ASP.NET Core. update If this is not the recommended way to store app configs please let me know what is. 回答1: I would not recommend reading the config file from your client side. But if you want to do I would suggest you

问题 I have this .NET Standard library where I want to write a .NET Core middleware. Inside which I want to do : Endpoint endpoint = httpContext.GetEndpoint(); The GetEndpoint() extension method can't be resolved. I have referenced Microsoft.AspNetCore.Http and I have both Microsoft.AspNetCore.Http.Abstractions and Microsoft.AspNetCore.Mvc.Core packages added to the project. Is there a solution to this, am I missing something? 回答1: I assume you're writing a middleware for ASP.NET Core 3.1 since