Configuration.GetConnectionString("DatabaseConnection")));No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the Db
(No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContext.)
---- System.InvalidOperationException : No databa
System.InvalidOperationException: No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContexton the application serv
在这里,我设置了一些从Anguar2到数据库的Db连接,但是当我试图访问数据库时,我得到了Additional information: No databaseproviderhasbeenconfiguredfor this DbContext.A providercan be configured by overriding the DbContext.OnConfiguring method or by using A
Source=MyDatabase.db"));错误消息: HResult=0x80131509
Message=No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext
误差
Finding DbContext classes...System.InvalidOperationException: No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding
serviceProvider.GetRequiredService<ApplicationDbContext>(); if (context.Database.IsSqlServerMicrosoft.EntityFrameworkCore: No databaseproviderhasbeenconfigured for this DbCont
This is often because no databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the 'DbContext.OnConfiguring' method or by using 'AddDbContext' on the app
我正在尝试使用.NET Core2.2和Angular构建我的数据库,并且遇到了这个错误: No databaseproviderhasbeenconfigured for this DbContextA providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContexton the appli
providerhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContexton the application service provider.providerhas <e
This is often because no databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the 'DbContext.OnConfiguring' method or by using 'AddDbContext' on the app
InvalidOperationException: No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContexton the application service <em
我已经跟踪了,但现在收到了以下错误:
InvalidOperationException: No databaseproviderhasbeenconfigured for this DbContextA providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContexton the appli
if optionsBuilder.IsConfigured <> false then
optionsBuilder.UseInMemoryDatabase("database_nameproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbConte
这是一个错误:
No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContexton the application service provider.acce
This is often because no databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext.OnConfiguring method or by using AddDbContexton the application service prov
在设置了context = new ()之后): HResult=0x80131509
Message=No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the DbContext.OnCon
PropertyManagementDataMappingProfile());}Message:
System.InvalidOperationException : No databaseproviderhasbeenconfigured for this DbContext.A providercan be configured by overriding the