How to Use Virtual Sources

• Jan 28, 2022

This step-by-step tutorial demonstrates how to use virtual sources in an MVVM application.

Complete Examples

The following examples include projects with the MVVM approach and a basic non-MVVM approach:

• How to Bind to InfiniteAsyncSource
• How to Bind to PagedAsyncSource

Demos

• Infinite Scrolling Source
• Paged Source

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Tutorial Steps

Note

This tutorial uses the Issues Service as a sample data source and the InfiniteAsyncSource as a virtual source.

For information on how to use other virtual sources, refer to the following help topic: Other Virtual Sources.

• Step 1: Fetch Data

  Create a virtual source and fetch rows from a service.

• Step 2: Enable Sort Operations

  Implement sort operations in the virtual source and enable them in the GridControl.

• Step 3: Enable Filter Operations

  Implement filter operations in the virtual source and enable them in the GridControl.

• Step 4: Display Summaries

  Get summaries and display them in the GridControl.

• Step 5: Enable Data Edit Operations

  Enable data edit operations in the GridControl and post changes to the database.