Question

我在使用netTiers生成的代码时遇到了奇怪的问题。我试图使用以简单形式提供的框架来保存创建的实体之一的信息。

这是我从ASPX页面调用的方法：

    public void UpdateSupplier(Object sender, EventArgs e)
    {
        // Update Supplier name and code from update form
        supplier.Name = txtName.Text;
        supplier.Code = txtCode.Text;

        // Save the Changes - Exception happens on next line!
        PPGEDI.Data.DataRepository.SuppliersEntityEntityProvider.Save(supplier);

        // Reload the information from the database to display
        ReLoadInformation();
    }

当我从按钮上调用该方法时，单击aspx页面，我会收到以下异常信息：

'/'应用程序中的服务器错误。找不到配置文件entlib.config。描述：执行当前Web请求期间发生未处理的异常。请查看堆栈跟踪，以获取有关错误及其在代码中的起源位置的更多信息。

Exception Details: System.IO.FileNotFoundException: The configuration file entlib.config could not be found.

Source Error:

Line 190:       public override void DoValidate(object objectToValidate, object currentTarget, string key, ValidationResults validationResults)
Line 191:       {
Line 192:           Validator validator = new ValidationIntegrationHelper(this).GetValidator();
Line 193:
Line 194:           if (validator != null)


Source File: PPGEDI.Entities\Validation\PropertyValidator.cs    Line: 192

Stack Trace:

[FileNotFoundException: The configuration file entlib.config could not be found.]
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource.GetRootedCurrentConfigurationFile(String configurationFile) +221
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource..ctor(String configurationFilepath, Boolean refresh, Int32 refreshInterval) +45
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource..ctor(String configurationFilepath, Boolean refresh) +48
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource..ctor(String configurationFilepath) +39
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSourceElement.CreateSource() +64
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ConfigurationSourceFactory.Create(String name) +355
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ConfigurationSourceFactory.Create() +96
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.EnterpriseLibraryContainer.CreateDefaultContainer() +25
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.EnterpriseLibraryContainer.SetCurrentContainerIfNotSet() +84
   Microsoft.Practices.EnterpriseLibrary.Common.Configuration.EnterpriseLibraryContainer.get_Current() +22
   Microsoft.Practices.EnterpriseLibrary.Validation.ValidationFactory.get_DefaultCompositeValidatorFactory() +25
   Microsoft.Practices.EnterpriseLibrary.Validation.PropertyValidationFactory.GetPropertyValidatorFromAttributes(Type type, PropertyInfo propertyInfo, String ruleset, MemberAccessValidatorBuilderFactory memberAccessValidatorBuilderFactory) +166
   Microsoft.Practices.EnterpriseLibrary.Validation.PropertyValidationFactory.GetPropertyValidator(Type type, PropertyInfo propertyInfo, String ruleset, ValidationSpecificationSource validationSpecificationSource, MemberAccessValidatorBuilderFactory memberAccessValidatorBuilderFactory) +264
   Microsoft.Practices.EnterpriseLibrary.Validation.PropertyValidationFactory.GetPropertyValidator(Type type, PropertyInfo propertyInfo, String ruleset, ValidationSpecificationSource validationSpecificationSource, MemberValueAccessBuilder memberValueAccessBuilder) +71
   Microsoft.Practices.EnterpriseLibrary.Validation.Integration.ValidationIntegrationHelper.GetValidator() +106
   PPGEDI.Entities.Validation.PropertyValidator.DoValidate(Object objectToValidate, Object currentTarget, String key, ValidationResults validationResults) in PPGEDI.Entities\Validation\PropertyValidator.cs:192
   Microsoft.Practices.EnterpriseLibrary.Validation.Validator.Validate(Object target) +80
   PPGEDI.Entities.EntityBaseCore.Validate(String propertyName) in PPGEDI.Entities\EntityBaseCore.generated.cs:477
   PPGEDI.Entities.EntityBaseCore.OnPropertyChanged(PropertyChangedEventArgs e) in PPGEDI.Entities\EntityBaseCore.generated.cs:342
   PPGEDI.Entities.EntityBaseCore.OnPropertyChanged(String propertyName) in PPGEDI.Entities\EntityBaseCore.generated.cs:329
   PPGEDI.Entities.SuppliersEntityBase.set_Name(String value) in SuppliersEntityBase.generated.cs:279
   PPGEDI.Supplier.Supplier_Main_Config.UpdateSupplier(Object sender, EventArgs e) in Supplier_Main_Config.aspx.cs:29
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.225

以下方法似乎是造成异常的方法：

  /// <summary>
  /// Does the validate.
  /// </summary>
  /// <param name="objectToValidate">The object to validate.</param>
  /// <param name="currentTarget">The current target.</param>
  /// <param name="key">The key.</param>
  /// <param name="validationResults">The validation results.</param>
  public override void DoValidate(object objectToValidate, object currentTarget, string key, ValidationResults validationResults)
  {
     // Exception Error on next line!!!
     Validator validator = new ValidationIntegrationHelper(this).GetValidator();

     if (validator != null)
     {
        ValidationResults results = validator.Validate(this);

        if (!results.IsValid)
        {
           validationResults.AddAllResults(results);
        }
     }
  }

现在，这是最奇怪的事情。我提出了断点来追踪并找到问题。我在浏览器中点击F5，没有异常错误。经过一些试验和错误后，我发现每次提交表单时都会收到此异常错误，但如果我点击F5，它会重新提交没有错误，并且更新确实发生在数据库中。如果有人可以告知为什么会发生这种情况以及我可以采取哪些措施来解决这个错误，将不胜感激。 entlib.config文件确实在项目中，它也是生成的，我已经验证它确实存在。

使用ValidationIntegrationHelper调用的EntLib的信息是：

Assembly Microsoft.Practices.EnterpriseLibrary.Validation.dll, v2.0.50727

更新：我仍然无法弄清楚如何解决这个问题，所以我做了一件可怕的事情，我在DoValidate的代码周围放了一个try / catch块，这样它就不会炸毁我了。我需要在客户端使用它时不要破坏它，但我仍然需要弄清楚它为什么这样做并修复它，而不是在我们投入生产之前忽略它。如果它只是处理验证，那么我可以处理忽略它，因为我在保存或更新实体之前在正面验证。

Answer 1

这个问题似乎只是在Enterpise Library验证中。我使用NetTiers验证重新生成了项目，但我没有这个问题。我无法弄清楚问题是什么，但是使用NetTiers验证生成项目会使问题消失。

nettiers生成代码中的奇怪异常错误

1 个答案: