TdxBackendDataConnectionManager Class
An auxiliary component for data connection management at design time.
Declaration
TdxBackendDataConnectionManager = class(
TcxCustomComponent
)Remarks
A backend client component can populate template placeholder fields with data from multiple souces simultaneously. TdxBackendDataConnectionManager is a non-visual component designed to manage data connections available for a backend client component at design time.
Tip
You can create data connection components directly in code, without TdxBackendDataConnectionManager.
Refer to data connection class descriptions for detailed information and code examples.
Data Connection Components
- TdxBackendInMemoryJSONConnection
- A component designed for interaction with JSON data stored in memory.
- TdxBackendDataSetJSONConnection
- A component designed to work with data in one or multiple datasets (TDataSet descendants).
- TdxBackendDatabaseSQLConnection
A component designed to fetch data from an SQL database (SQL Server, Postgre SQL, SQLite, etc.).
Tip
This component relies on our ASP.NET Core Reporting engine based on the XPO ORM (powered by ADO.NET). Refer to the following topic for connection string examples: Specify a Connection String.
Main API Members
The list below outlines key members of the TdxBackendDataConnectionManager class. These members allow you to create, destroy, and access individual data connection components.
- Count
- Returns the number of data connection components accessible through the Items property.
- DataConnections
- Allows you to create and destroy individual data connection components.
Related Compiled Demos
To see TdxDashboardControl and TdxReport components in action, run BI Dashboards Designer/Viewer and Report Designer/Viewer demos in the VCL Demo Center installed with compiled VCL DevExpress demos. Click different items in the sidebar on the left to switch between demo features.
Tip
You can find full source code for installed compiled Report and Dashboard demos in the following folders:
- %PUBLIC%\Documents\DevExpress VCL Demos\MegaDemos\Product Demos\ExpressReports\
- %PUBLIC%\Documents\DevExpress VCL Demos\MegaDemos\Product Demos\ExpressDashboards\