BaseMetadataProvider Class

Visual Basic
C#
Managed Extensions for C++

'Declaration
 
Public MustInherit Class BaseMetadataProvider 
   Inherits System.ComponentModel.Component

'Usage
 
Dim instance As BaseMetadataProvider

public abstract class BaseMetadataProvider : System.ComponentModel.Component

public __gc abstract class BaseMetadataProvider : public System.ComponentModel.Component

Metadata Providers are used to provide access to the database connection to get the metadata information.

Metadata Provider is intended to be assigned to the QueryBuilder.MetadataProvider Property.

Using Metadata Provider you will get the metadata information loaded to the component automatically. However, you may use the Query Builder without a Metadata Provider, for example, if you can't establish direct connection to the database working in multi-tier environment. Working without a Metadata Provider you should fill the list of database objects to the Metadata Container by yourself; otherwise you will not be able to browse the Database Schema Tree. Also you'll have to set the OfflineMode Property to true to deny execution of metadata extraction queries and set the MetadataContainer.ItemMetadataLoading Event to fill the field lists of database objects being added to the query; otherwise you will see them empty at the Design Pane.

Reference

BaseMetadataProvider Members
ActiveDatabaseSoftware.ActiveQueryBuilder Namespace