c# - Unity Ioc Configuration Error -

i have following problem:

i using ioc unity c#. case implements ioc following:

using microsoft.practices.unity; using microsoft.practices.unity.configuration;      namespace tanspritr.ioc     {         public class ioccontainer         {             private static readonly ioccontainer contenedor = new ioccontainer();             private readonly iunitycontainer unitycontainer;              private ioccontainer()             {                 unitycontainer = new unitycontainer();                 unitycontainer.loadconfiguration("micontenedor");             }              public static ioccontainer contenedor             {                 { return contenedor; }             }             /// <summary>             ///   create instance of object implements tservicio.             /// </summary>             /// <typeparam name = "tservicio">type of service want resolve</typeparam>             /// <returns></returns>             public tservicio resolver<tservicio>() tservicio : class             {                 return unitycontainer.resolve<tservicio>();             }         }     } 

my app.config following:

<?xml version="1.0" encoding="utf-8" ?> <configuration>     <configsections>         <section name="loggingconfiguration" type="microsoft.practices.enterpriselibrary.logging.configuration.loggingsettings, microsoft.practices.enterpriselibrary.logging, version=5.0.414.0, culture=neutral, publickeytoken=31bf3856ad364e35" requirepermission="true" />         <section name="exceptionhandling" type="microsoft.practices.enterpriselibrary.exceptionhandling.configuration.exceptionhandlingsettings, microsoft.practices.enterpriselibrary.exceptionhandling, version=5.0.414.0, culture=neutral, publickeytoken=31bf3856ad364e35" requirepermission="true" />       <section name="unity" type="microsoft.practices.unity.configuration.unityconfigurationsection, microsoft.practices.unity.configuration"/>     </configsections>   <unity>     <container>       <register type="transpritr.interfaz.inegocio, transpritr.interfaz" mapto="transpritr.buisness.negocio, transpritr.buisness"/>       <register type="transpritr.interfaz.isqlserver,transpritr.interfaz" mapto="transpritr.dataacces.sqlserver, transpritr.dataacces"/>      </container>   </unity> </configuration> 

now example class negocio following:

using transpritr.interfaz;  namespace transpritr.buisness {     public class negocio : inegocio     {         //private collection<string[]> getalltranspritr()         //{         //    //var datacontrol = ioccontainer.contenedor.resolver<isqlserver>();         //   // return datacontrol.getalltranspritr();         //    return new collection<string[]>();         //}         //private void createfile(collection<string[]> lista)         //{         //    var filename = configurationmanager.appsettings["filename"];         //    streamwriter write = new streamwriter(filename);         //    int cont = 1;         //    foreach (var linea in lista)         //    {          //        string temp = cont.tostring() + "|";         //        foreach(var texto in linea)         //        {         //            temp += texto + "|";         //        }         //        write.writeline(temp);         //    }         //}         public void load()         {             //var lista = getalltranspritr();            // createfile(lista);         }     } } 

and it's interface is:

namespace transpritr.interfaz {     public interface inegocio     {         void load();     } } 

my problem when try invoke negocio class via ioc var interfaz = ioccontainer.contenedor.resolver<inegocio>();, gives me following problem:

> no se controló system.typeinitializationexception   message=se produjo > una excepción en el inicializador de tipo de > 'tanspritr.ioc.ioccontainer'.   source=tanspritr.ioc   > typename=tanspritr.ioc.ioccontainer   stacktrace: >        en tanspritr.ioc.ioccontainer.get_contenedor() >        en transpritr.program.main(string[] args) en d:\altiuz\beny\trans_pritr\trans_pritr\transpritr\program.cs:línea 14 >        en system.appdomain._nexecuteassembly(assembly assembly, string[] args) >        en system.appdomain.executeassembly(string assemblyfile, evidence assemblysecurity, string[] args) >        en microsoft.visualstudio.hostingprocess.hostproc.runusersassembly() >        en system.threading.threadhelper.threadstart_context(object state) >        en system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state) >        en system.threading.threadhelper.threadstart()   innerexception: system.argumentnullexception >        message=el valor no puede ser nulo. nombre del parámetro: section >        source=microsoft.practices.unity >        paramname=section >        stacktrace: >             en microsoft.practices.unity.utility.guard.argumentnotnull(object > argumentvalue, string argumentname) en > e:\builds\unity\unitytemp\compile\unity\unity\src\utility\guard.cs:línea > 33 >             en microsoft.practices.unity.configuration.unitycontainerextensions.loadconfiguration(iunitycontainer > container, unityconfigurationsection section, string containername) en > e:\builds\unity\unitytemp\compile\unity\unity.configuration\src\unitycontainerextensions.cs:línea > 35 >             en microsoft.practices.unity.configuration.unitycontainerextensions.loadconfiguration(iunitycontainer > container, string containername) en > e:\builds\unity\unitytemp\compile\unity\unity.configuration\src\unitycontainerextensions.cs:línea > 52 >             en tanspritr.ioc.ioccontainer..ctor() en d:\altiuz\beny\trans_pritr\trans_pritr\tanspritr.ioc\ioccontainer.cs:línea > 14 >             en tanspritr.ioc.ioccontainer..cctor() en d:\altiuz\beny\trans_pritr\trans_pritr\tanspritr.ioc\ioccontainer.cs:línea > 8 >        innerexception: 

the problem based on earlier project did work, implement in new project, doesn't work. don't know why, , need help.

---

note: translated english, see original, go "edited" link below.

i start with:

• ensure using correct configuration (in .config) version of unity
  • is configuration.unity.container.register valid element?
  • try using the: enterprise library configuration tool
• ensure of required dependencies discoverable.

references

• enterprise library configuration tool
• entering configuration information
• msdn: unity container