TdxBackendDataConnectionCollection Class

A collection of report data connections stored in the TdxBackendDataConnectionManager component.

Declaration

TdxBackendDataConnectionCollection = class(
    TcxComponentCollection
)

Remarks

A backend client component can populate template placeholder fields with data from multiple sources simultaneously. The TdxBackendDataConnectionCollection class implements a data connection collection for the TdxBackendDataConnectionManager component created to maintain data connections at design time.

Main API Members

The list below outlines key members of the TdxBackendDataConnectionCollection class. These members allow you to manage and access individual data connections available for backend client components in your project.

Collection Management APIs

Add

Creates a data connection of any supported type and adds the connection to the collection.

Clear

Clears the collection.

Count

Returns the number of data connections accessible through the Items property.

Delete

Deletes individual stored data connection components.

Items

Provides indexed access to stored data connection components.

General-Purpose API Members

Assign

Copies data connection components between collections.

BeginUpdate | EndUpdate

Allow you to avoid redundant notifications during batch collection changes.

Available Data Connection Components

TdxBackendInMemoryJSONConnection

A component designed for interaction with data stored in memory.

TdxBackendDataSetJSONConnection

A component designed to fetch data from one or multiple datasets (TDataSet descendant instances).

TdxBackendDatabaseSQLConnection

A component designed to fetch data from an SQL database (SQL Server, PostgreSQL, SQLite, etc.).

Direct TdxBackendDataConnectionCollection Class Reference

The TdxBackendDataConnectionManager.DataConnections property references a TdxBackendDataConnectionCollection object.

Inheritance

TObject

TPersistent

TcxComponentCollection

TdxBackendDataConnectionCollection