public void ShowReport()
{
 //ReportServer - WebReference на Reporting Services 

	ReportServer.ReportingService rs = new ReportServer.ReportingService();
	rs.Credentials = System.Net.CredentialCache.DefaultCredentials;
			
	rs.Proxy = new WebProxy("http://MyFireWall:80",true,null,MyCredential);
	rs.Credentials = MyCredential;
			
 // Render arguments 
	byte[] result = null;
	string reportPath = "/MyReportGroup/MyReport";
	string format = "HTML4.0";
	string historyID = null;
	string devInfo = @"<DeviceInfo><Toolbar>False</Toolbar></DeviceInfo>";

 // Prepare report parameter. 
	ReportServer.ParameterValue[] parameters = null;

	ReportServer.DataSourceCredentials[] credentials = null;
	string showHideToggle = null;
	string encoding;
	string mimeType;
	ReportServer.Warning[] warnings = null;
	ReportServer.ParameterValue[] reportHistoryParameters = null;
	string[] streamIDs = null;

	try
	{
		result = rs.Render(reportPath, format, historyID, devInfo, parameters, credentials, 
		showHideToggle, out encoding, out mimeType, out reportHistoryParameters, out warnings,
		out streamIDs);
	}
	catch (Exception e)
	{
		MessageBox.Show(e.Message);
	}
 // Write the contents of the report to an HTML file. 
	try
	{
		FileStream stream = File.Create( "report.html", result.Length );
		stream.Write( result, 0, result.Length );
		stream.Close();
		System.Diagnostics.Process.Start("report.html");
	}
	catch ( Exception e )
	{
		MessageBox.Show( e.Message );
	}
}