Load SharePoint Server reports

To render SharePoint server reports, set the ReportServerUrl, ReportPath, and ReportServiceUrl properties as shown in the following code snippet.

@(Html.Bold().ReportViewer("viewer")
    .ReportServiceUrl("/api/SharePointReports")
    .ReportServerUrl("http://<servername>/reportserver$instanceName")
    .ReportPath("http://<servername>/reportserver$instanceName/SSRSSamples/Territory Sales.rdl")
)

In SharePoint integrated mode, the ReportServerUrl will be same as your site URL. The ReportPath is relative to the Report Server URL with the file extension.

Forms credential for SharePoint Server

The forms credentials are required to load the SharePoint integrated SSRS report from the specified SharePoint integrated SSRS Report Server using the Report Viewer. Specify the ReportServerFormsCredential property in the Web API Controller OnInitReportOptions method.

[NonAction]
public void OnInitReportOptions(ReportViewerOptions reportOption)
{
    //Add ReportServerFormsCredential for server
    reportOption.ReportModel.ReportServerFormsCredential = new ReportServerFormsCredential("ssrs", "RDLReport1");
}

Set data source credential to shared data sources

The shared data source credentials can be added to the DataSourceCredentials property to connect with the database.

[NonAction]
public void OnInitReportOptions(ReportViewerOptions reportOption)
{
    //Add ReportServerFormsCredential and data source credentials
    reportOption.ReportModel.ReportServerFormsCredential = new ReportServerFormsCredential("ssrs", "RDLReport1");
    reportOption.ReportModel.DataSourceCredentials.Add(new BoldReports.Web.DataSourceCredentials("<database>", "ssrs1", "RDLReport1"));
}

Data source credentials should be added to shared data sources that do not have credentials in the connection strings.