Dao<TEntity, TEntityCollection, TDataContext, TFilteringCriteria, TOrderingCriteria, TPagingCriteria, TCarboniteController, TTransaction, TTransactionCreationParameters>.OnGetFirst (TFilteringCriteria) Method

By calling the Get method to retrieve all TEntity entities in compliance with the TFilteringCriteria, and then picking the first of them, this inversion control method handles the request to obtain the first entity from the underlying data store.

Namespace: Keystone.Carbonite
Assembly: Keystone.Carbonite (in Keystone.Carbonite.dll)

Syntax

C++

JScript

Copy

protected virtual TEntity OnGetFirst( 
   TFilteringCriteria filteringCriteria 
)

This language is not supported or no code example is available.

Parameters

filteringCriteria

Type: TFilteringCriteria

The filtering criteria.

Return Value

The first TEntity in compliance with the TFilteringCriteria, obtained from the underlying data store, or null reference (Nothing in Visual Basic) if none exists.

Platforms

Windows, Windows Server, OS X, macOS, iOS, tvOS, Android, Linux, AWS, Azure

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

Version Information

.NET Framework

Supported in: 4.6

Others

Xamarin, Mono

Reference

Dao<TEntity, TEntityCollection, TDataContext, TFilteringCriteria, TOrderingCriteria, TPagingCriteria, TCarboniteController, TTransaction, TTransactionCreationParameters> Class
Dao<TEntity, TEntityCollection, TDataContext, TFilteringCriteria, TOrderingCriteria, TPagingCriteria, TCarboniteController, TTransaction, TTransactionCreationParameters> Members
Keystone.Carbonite Namespace