Programatically getting SSRS (in PDF/ Excel) hosted on Azure VM

Question

i am migrating my SSRS deployed on Azure SQL reporting to SSRS hosted on Azure VM. I have successfully created a VM and deployed my reports, which can be viewed from browser. now my requirement is that i want to get the reports in PDF or EXCEL format programatically
(from web role). that requirment working fine for last one year until I moved SSRS to VM.
when i called   ReportViewer.ServerReport.GetParameters()
method it throw an exception 401 UnAuthorized access. i am currently using below class to authenticate my user to get reports in PDF or EXCEL
public class SSRSReportServerCredentials : IReportServerCredentials
public SSRSReportServerCredentials()
public WindowsIdentity ImpersonationUser
get { return null; }
public ICredentials NetworkCredentials
get { return null; }
public bool GetFormsCredentials(out Cookie authCookie, out string user, out string password, out string authority)
authCookie = null;
user = sa;
password = test;
authority = SERVER.reporting.windows.net;
return true;
Can any one help me out to fix my production issue.
best regards, Zeeshan

Answer 1

In SQL Azure Reporting, SSRS was designed to use Forms Based Authentication. Due to this we were required to use IReportServerCredentials and return the GetFormsCredentials method as described by you. 
Since you have successfully migrated to SSRS on an Azure VM, the way to Authenticate against Reporting Services would be to return the
NetworkCredentials Property instead of the GetFormCredentials
since SSRS on an Azure VM using Windows Authentication By Default. 
More Information: http://msdn.microsoft.com/en-us/library/microsoft.reporting.webforms.ireportservercredentials(v=vs.100).aspx
public class SSRSReportServerCredentials : IReportServerCredentials
public SSRSReportServerCredentials()
public WindowsIdentity ImpersonationUser
get { return null; }
public ICredentials NetworkCredentials
get { return new NetworkCredential("ReportServerUserName", "ReportServerPassword"); }
public bool GetFormsCredentials(out Cookie authCookie, out string user, out string password, out string authority)
authCookie = null;
user = null;
password = null;
authority = null;
return false;
Best Regard,
Kane