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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

JsonDataSource Class

The data source that extracts data stored in JSON format.

Namespace:DevExpress.DataAccess.Json
Assembly:DevExpress.DataAccess.v19.2.dll

Expanded Syntax

Expanded Remarks

The JsonDataSource object allows you to extract JSON data from a Web-service endpoint, text file or JSON string.

Note

The JsonDataSource is supported in Reporting. In Dashboards, use the DashboardJsonDataSource (see DevExpress.DashboardCommon.DashboardJsonDataSource) class.

You can create the JsonDataSource object both at design time and runtime.

Design Time

Use the Data Source Wizard that the target control (e.g., the Report Designer in the images below) provides to create a JsonDataSource object. The wizard's pages allow you to specify the JSON data location and select required JSON nodes.

After you finish the wizard, it creates the JsonDataSource object. In the Properties window, you can change the JsonDataSource's property values.

Refer to the Bind a Report to JSON Data topic for more information on how to create and configure the JsonDataSource object in the Report Designer at design time.

Runtime

Do the following to configure the JsonDataSource object at runtime:

  1. Use the JsonDatasource's JsonSource (see JsonSource) property to specify the JSON data location.

  2. (Optionally) Use the Schema (see Schema) property to specify from which JSON nodes to retrieve data.

  3. Use the Fill method to fill to the Report Designer's Field List.

The code sample below illustrates how to use JSON data from the Web.

The code sample below illustrates how to use JSON data from a file.

The code sample below illustrates how to use JSON data from a string variable.

Refer to the Bind a Report to JSON Data (Runtime Sample) topic for more information on how to create and configure the JsonDataSource object and then bind it to a report at runtime. You can also provide the created JsonDataSource object with authentication parameters to access the specified Web Endpoint. Refer to the Provide Authentication to Access JSON Data (Runtime Sample) topic for more information.

Install the Newtonsoft.json Package

The JsonDataSource object uses the open source Newtonsoft.Json library. Install the Newtonsoft.Json package if your application does not reference this library.

Expanded Inheritance Hierarchy

System.Object
    System.MarshalByRefObject
       System.ComponentModel.Component
          DevExpress.DataAccess.DataComponentBase
             JsonDataSource

Expanded See Also

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