WebServiceDataSource Wizard Displays object Object
Environment
| Product | Progress® Telerik® Reporting |
| Project Type | ASP.NET Web Application |
| Target Framework | .NET Framework |
Description
When I attempt to preview the data of the WebServiceDataSource component in the last page of the wizard, instead of seeing the response printed on the page, it displays [object Object]s.
Cause
In the .NET Framework implementation of the ReportDesignerControllerBase class, which must be used to create a controller for the Report Designer service in the project, the PreviewWebServiceData(DataSourceInfo) method returns a JSON response instead of a stringified JSON, thus the inner text of the element on the page cannot be bound correctly.
Suggested Workarounds
As a workaround, the PreviewWebServiceData(DataSourceInfo) method of the report designer controller can be overridden to return a plain text response instead of JSON:
public override IHttpActionResult PreviewWebServiceData(DataSourceInfo dataSourceInfo)
{
var baseResult = (ResponseMessageResult)base.PreviewWebServiceData(dataSourceInfo);
var jsonString = baseResult.Response.Content.ReadAsStringAsync().Result;
return Ok(jsonString);
}