我写了一个客户端服务器应用程序。如果服务器从EF6请求数据没有问题,也没有异常。如果客户端询问来自EF6的WFC数据,则会发现提供程序未找到异常。我的数据库是MS SQL Server 2017.CLient和Server具有相同的调试文件夹。
WFC的例外情况:
“找不到具有不变名称'System.Data.SqlClient'的ADO.NET提供程序的实体框架提供程序。确保提供程序已在应用程序配置文件的'entityFramework'部分中注册。请参阅http://go.microsoft.com/fwlink/?LinkId=260882了解更多信息。“
Server App.config
<?xml version="1.0" encoding="utf-8"?>
集成 安全= TRUE;数据库= PeddTax; MultipleActiveResultSets =真“/&GT;
<system.web>
<compilation debug="true" />
</system.web>
<system.serviceModel>
<services>
<service name="PeddTaxServer.Communication.UserService">
<endpoint address="http://localhost:6060/wcf/UserService" binding="basicHttpBinding"
bindingConfiguration="" name="UserServiceEndpoint" contract="PeddTax.Communication.Interfaces.IUserService" />
</service>
</services>
</system.serviceModel>
客户端App.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.1" />
</startup>
<system.serviceModel>
<client>
<endpoint address="http://localhost:6060/wcf/UserService"
binding="basicHttpBinding" bindingConfiguration=""
contract="PeddTax.Communication.Interfaces.IUserService"
name="UserServiceEndpoint" kind="" endpointConfiguration="" />
</client>
</system.serviceModel>
<system.web>
<compilation debug="true" />
</system.web>
</configuration>
WFC的IUserInterface
[ServiceContract]
public interface IUserService
{
[OperationContract]
void AddUser(User user);
[OperationContract]
void UpdateUser(User user);
[OperationContract]
User GetUser(Guid id);
[OperationContract]
List<User> GetUsers();
[OperationContract]
void DeleteUser(User user);
}
WFC的UserService
public class UserService : IUserService, IService
{
UserRepository userRep = new UserRepository();
public void AddUser(User user)
{
userRep.Add(user);
userRep.Save();
}
public void DeleteUser(User user)
{
userRep.Delete(user);
userRep.Save();
}
public User GetUser(Guid id)
{
return userRep.GetSingle(id);
}
public List<User> GetUsers()
{
return userRep.GetAll().ToList();
}
public void UpdateUser(User user)
{
userRep.Edit(user);
userRep.Save();
}
}
在userRepository中有这个方法
public IQueryable<T> GetAll()
{
IQueryable<T> query = entities.Set<T>();
return query;
}