Unable to cast object of type 'Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings' to type 'Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings'.

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System.InvalidCastException was caught
  Message="Unable to cast object of type 'Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings' to type 'Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings'."
  Source="Microsoft.Practices.EnterpriseLibrary.Data"
  StackTrace:
       at Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSyntheticConfigSettings.<get_Databases>d__0.MoveNext() in e:\Builds\EntLib\Latest\Source\Blocks\Data\Src\Data\Configuration\DatabaseSyntheticConfigSettings.cs:line 88
       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
       at Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSyntheticConfigSettings.<DoGetRegistrations>d__10.MoveNext() in e:\Builds\EntLib\Latest\Source\Blocks\Data\Src\Data\Configuration\DatabaseSyntheticConfigSettings.cs:line 323
       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
       at Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSyntheticConfigSettings.GetRegistrations(IConfigurationSource configurationSource) in e:\Builds\EntLib\Latest\Source\Blocks\Data\Src\Data\Configuration\DatabaseSyntheticConfigSettings.cs:line 307
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.TypeLoadingLocator.<GetRegistrations>b__0(ITypeRegistrationsProvider p, IConfigurationSource cs) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\TypeLoadingLocator.cs:line 67
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.TypeLoadingLocator.GetRegistrationsInternal(IConfigurationSource configurationSource, Func`3 registrationAccessor) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\TypeLoadingLocator.cs:line 90
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.TypeLoadingLocator.GetRegistrations(IConfigurationSource configurationSource) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\TypeLoadingLocator.cs:line 67
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.CompositeTypeRegistrationsProviderLocator.<GetRegistrations>b__0(ITypeRegistrationsProvider l, IConfigurationSource cs) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\TypeRegistrationsProvider.cs:line 128
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.CompositeTypeRegistrationsProviderLocator.<>c__DisplayClass5.<GetRegistrationsInternal>b__4(ITypeRegistrationsProvider l) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\TypeRegistrationsProvider.cs:line 147
       at System.Linq.Enumerable.<SelectManyIterator>d__14`2.MoveNext()
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.Unity.UnityContainerConfigurator.RegisterAllCore(IConfigurationSource configurationSource, ITypeRegistrationsProvider rootProvider) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\Unity\UnityContainerConfigurator.cs:line 61
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.ChangeTrackingContainerConfigurator.RegisterAll(IConfigurationSource configurationSource, ITypeRegistrationsProvider rootProvider) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\ChangeTrackingContainerConfigurator.cs:line 66
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.EnterpriseLibraryContainer.ConfigureContainer(ITypeRegistrationsProvider locator, IContainerConfigurator configurator, IConfigurationSource configSource) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\EnterpriseLibraryContainer.cs:line 83
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.EnterpriseLibraryContainer.ConfigureContainer(IContainerConfigurator configurator, IConfigurationSource configSource) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\EnterpriseLibraryContainer.cs:line 62
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.EnterpriseLibraryContainer.CreateDefaultContainer(IConfigurationSource configurationSource) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\EnterpriseLibraryContainer.cs:line 122
       at Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ContainerModel.ContainerBasedInstanceFactory`1..ctor(IConfigurationSource configurationSource) in e:\Builds\EntLib\Latest\Source\Blocks\Common\Src\Configuration\ContainerModel\ContainerBasedInstanceFactory.cs:line 48
       at Microsoft.Practices.EnterpriseLibrary.Data.DatabaseProviderFactory..ctor(IConfigurationSource configurationSource) in e:\Builds\EntLib\Latest\Source\Blocks\Data\Src\Data\DatabaseProviderFactory.cs:line 45
       at VOSS.EntLibDataAccessLayer.ReadEntLibSettings() in D:\Intergration Code\Components\Common\EntLibDataBaseLayer.vb:line 195
       at VOSS.EntLibDataAccessLayer..ctor() in D:\Intergration Code\Components\Common\EntLibDataBaseLayer.vb:line 34
       at VOSS.Integrations.XmlRules.RetrieveRules() in D:\Intergration Code\Components\Integrations\BLL\XmlRules.vb:line 72

Is any one experienced above error ?
I am not able to figure out.

Can you please help me ?

Posted 24-Jun-13 20:25pm

Nibin22

Updated 24-Jun-13 20:26pm

v2

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Jim Jos 25-Jun-13 2:40am

Could you also put the code which is causing the exception?

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Nibin22 · Answer 1 · 2013-07-14T04:07:00

Hi Friends,

This is due to the presence of two versions of Enterprise Library in the system.

Say Enterprise Library 2.0 and 5.0.

One solution is configured to use Enterprise Library 2.0.
But the other is configured to use 5.0.
And hence the properly arises.

If the version is not provided in the Webconfig of any solution, Both would have taken from the GAC and hence it would resolve the problem.

For another solution: please visit..
http://entlib.codeplex.com/discussions/10384[^]