Question

我在致电UserMananger.FindByEmailAsync

时收到此消息

Exception thrown: 'System.MissingMethodException' in EntityFramework.Core.dll

Additional information: Method not found: 'Remotion.Linq.Parsing.ExpressionVisitors.TreeEvaluation.PartialEvaluationInfo Remotion.Linq.Parsing.ExpressionVisitors.TreeEvaluation.EvaluatableTreeFindingExpressionVisitor.Analyze(System.Linq.Expressions.Expression)'.

这是我的project.json依赖项：

"EntityFramework": "7.0.0-beta6-*",
"EntityFramework.Commands": "7.0.0-beta6-*",
"EntityFramework.Core": "7.0.0-beta6-*",
"EntityFramework.SqlServer": "7.0.0-beta6-*",
"Microsoft.AspNet.DataProtection": "1.0.0-beta6-*",
"Microsoft.AspNet.Diagnostics": "1.0.0-beta6-*",
"Microsoft.AspNet.Diagnostics.Entity": "7.0.0-beta6-*",
"Microsoft.AspNet.Identity.EntityFramework": "3.0.0-beta6-*",
"Microsoft.AspNet.Mvc": "6.0.0-beta6-*",
"Microsoft.AspNet.Owin": "1.0.0-beta6-*",
"Microsoft.AspNet.Server.IIS": "1.0.0-beta6-*",
"Microsoft.AspNet.Server.WebListener": "1.0.0-beta6-*",
"Microsoft.AspNet.StaticFiles": "1.0.0-beta6-*",
"Microsoft.AspNet.WebApi.Core": "5.2.3",
"Microsoft.Framework.Configuration": "1.0.0-beta6-*",
"Microsoft.Framework.Configuration.EnvironmentVariables": "1.0.0-beta6-*",
"Microsoft.Framework.Configuration.Json": "1.0.0-beta6-*",
"Microsoft.Framework.Configuration.UserSecrets": "1.0.0-beta6-*",
"Microsoft.Framework.DependencyInjection": "1.0.0-beta6-*",
"Microsoft.Framework.DependencyInjection.Ninject": "1.0.0-beta6-*",
"Microsoft.Framework.Logging": "1.0.0-beta6-*",
"Microsoft.Framework.Logging.Console": "1.0.0-beta6-*",
"Microsoft.Owin": "3.0.1",

我错过了什么？

Answer 1

您似乎缺少re-linq。但是应该安装它，因为它是＆＃34; EntityFramework.Core＆＃34;的依赖性。

尝试删除＆＃34; EntityFramework＆＃34;：＆＃34; 7.0.0-beta6 - *＆＃34;，因为此软件包没有will not exist。它可能是冲突的根源？只是一个猜测。

<强>更新您可以使用dnu list验证relinq的安装版本，并查看＆＃34;软件包参考＆＃34;。你应该有＆＃34; Remotion.Linq 2.0.0-alpha-004＆＃34; 列出

.NET vNext，EF7 beta6 - 调用UserMananger.FindByEmailAsync时出现Missing Method异常

1 个答案: