Power BI Report Server - PBIX report export programmatically

Hi Henery,

Thanks for your kind response.

Here I my code which will help you for more support.

1. Power bi report server URL - "https://powerbireport.server.com/" - using this url I can access power bi report in browser 

2. Power BI Report - report ID (itemID field in catalog table of db) - xxxxxxx-1111-22222-B8A7-6DD7D668ADA8 

client.Reports.ExportToFile(reportId, exportRequest); - line of code throws an error  -

Microsoft.Rest.HttpOperationException: 'Operation returned an invalid status code 'NotFound''

Please confirm above two items are used correctly and how to resolve this error.

var credentials = new TokenCredentials(TokenManager.GetAppOnlyAccessToken(), "Bearer");
using (var client = new PowerBIClient(new Uri("https://powerbireport.server.com/"), credentials))
{
var exportRequest = new ExportReportRequest
{
Format = FileFormat.PDF,
PowerBIReportConfiguration = new PowerBIReportExportConfiguration
{
Settings = new ExportReportSettings
{
IncludeHiddenPages = false
}
}
};

var reportId = new Guid("xxxxxxx-1111-22222-B8A7-6DD7D668ADA8");
var export = client.Reports.ExportToFile(reportId, exportRequest);
string exportId = export.Id;
do
{
System.Threading.Thread.Sleep(10000);
export = client .Reports.GetExportToFileStatus(reportId, exportId);
Console.WriteLine(" - Export status: " + export.PercentComplete.ToString() + "% complete");
} while (export.Status != ExportState.Succeeded && export.Status != ExportState.Failed);

if (export.Status == ExportState.Failed)
{
Console.WriteLine("Export failed!");
}

if (export.Status == ExportState.Succeeded)
{
string FileName = "test.pdf";

string FilePath = "C:\\PowerBiReport\\" + FileName;

Console.WriteLine(" - Saving exported file to " + FilePath);
var exportStream = client .Reports.GetFileOfExportToFile(reportId, exportId);
FileStream fileStream = File.Create(FilePath);
exportStream.CopyTo(fileStream);
fileStream.Close();
}

Console.WriteLine();

}