ReportExecutionService.Render Method

Syntax

'Declaration
<SoapHeaderAttribute("ExecutionHeaderValue")> _
<SoapDocumentMethodAttribute("https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices/Render", RequestNamespace := "https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices",  _
    ResponseNamespace := "https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices",  _
    Use := SoapBindingUse.Literal, ParameterStyle := SoapParameterStyle.Wrapped)> _
<SoapHeaderAttribute("TrustedUserHeaderValue")> _
<SoapHeaderAttribute("ServerInfoHeaderValue", Direction := SoapHeaderDirection.Out)> _
Public Function Render ( _
    Format As String, _
    DeviceInfo As String, _
    <OutAttribute> ByRef Extension As String, _
    <OutAttribute> ByRef MimeType As String, _
    <OutAttribute> ByRef Encoding As String, _
    <OutAttribute> ByRef Warnings As Warning(), _
    <OutAttribute> ByRef StreamIds As String() _
) As Byte()
'Usage
Dim instance As ReportExecutionService
Dim Format As String
Dim DeviceInfo As String
Dim Extension As String
Dim MimeType As String
Dim Encoding As String
Dim Warnings As Warning()
Dim StreamIds As String()
Dim returnValue As Byte()

returnValue = instance.Render(Format, _
    DeviceInfo, Extension, MimeType, _
    Encoding, Warnings, StreamIds)

[SoapHeaderAttribute("ExecutionHeaderValue")]
[SoapDocumentMethodAttribute("https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices/Render", RequestNamespace = "https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices", 
    ResponseNamespace = "https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices", 
    Use = SoapBindingUse.Literal, ParameterStyle = SoapParameterStyle.Wrapped)]
[SoapHeaderAttribute("TrustedUserHeaderValue")]
[SoapHeaderAttribute("ServerInfoHeaderValue", Direction = SoapHeaderDirection.Out)]
public byte[] Render(
    string Format,
    string DeviceInfo,
    out string Extension,
    out string MimeType,
    out string Encoding,
    out Warning[] Warnings,
    out string[] StreamIds
)

[SoapHeaderAttribute(L"ExecutionHeaderValue")]
[SoapDocumentMethodAttribute(L"https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices/Render", RequestNamespace = L"https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices", 
    ResponseNamespace = L"https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices", 
    Use = SoapBindingUse::Literal, ParameterStyle = SoapParameterStyle::Wrapped)]
[SoapHeaderAttribute(L"TrustedUserHeaderValue")]
[SoapHeaderAttribute(L"ServerInfoHeaderValue", Direction = SoapHeaderDirection::Out)]
public:
array<unsigned char>^ Render(
    String^ Format, 
    String^ DeviceInfo, 
    [OutAttribute] String^% Extension, 
    [OutAttribute] String^% MimeType, 
    [OutAttribute] String^% Encoding, 
    [OutAttribute] array<Warning^>^% Warnings, 
    [OutAttribute] array<String^>^% StreamIds
)

[<SoapHeaderAttribute("ExecutionHeaderValue")>]
[<SoapDocumentMethodAttribute("https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices/Render", RequestNamespace = "https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices", 
    ResponseNamespace = "https://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices", 
    Use = SoapBindingUse.Literal, ParameterStyle = SoapParameterStyle.Wrapped)>]
[<SoapHeaderAttribute("TrustedUserHeaderValue")>]
[<SoapHeaderAttribute("ServerInfoHeaderValue", Direction = SoapHeaderDirection.Out)>]
member Render : 
        Format:string * 
        DeviceInfo:string * 
        Extension:string byref * 
        MimeType:string byref * 
        Encoding:string byref * 
        Warnings:Warning[] byref * 
        StreamIds:string[] byref -> byte[] 

public function Render(
    Format : String, 
    DeviceInfo : String, 
    Extension : String, 
    MimeType : String, 
    Encoding : String, 
    Warnings : Warning[], 
    StreamIds : String[]
) : byte[]

Remarks

Render renders a processed report associated with the report execution identified in the ExecutionInfo header. If no temporary snapshot exists for the processed report in the execution state, this method will execute the report (if all credential and parameter requirements are met), resulting in a temporary snapshot being created for the execution state. If the report is reprocessed because non-query parameter values have changed, a new temporary snapshot is created. For more information on execution state, see Identifying Execution State.

If the execution options are set to cache or execution snapshot, the call to Render may use an existing snapshot.

If the report is set to cache and the supplied parameter values and credentials match, the cached copy of the snapshot may be loaded instead of actually processing the report.

If credential and parameter requirements are not met, this method will return an error.

Subsequent calls to Render can be used to fetch additional pages of the report if the rendering extension supports specifying multiple pages.

A limitation of the Render method is that the output cannot be streamed, so the entire file must be in-memory.

Please see Identifying Execution State for a discussion of the execution life cycle, which includes a description of the steps necessary to load and render a report.

Examples

To compile the following code example, you must reference the Reporting Services WSDL and import certain namespaces. For more information, see Compiling and Running Code Examples. The following code example renders a report in MHTML and saves it as an .mht file to disk.

Imports System
Imports System.IO
Imports System.Web.Services.Protocols
Imports myNamespace.MyReferenceName

Class Sample
    Public Shared Sub Main()
        Dim rs As New ReportExecutionService()
        rs.Credentials = System.Net.CredentialCache.DefaultCredentials
        rs.Url = "http://myserver/reportserver/ReportExecution2005.asmx"

        ' Render arguments
        Dim result As Byte() = Nothing
        Dim reportPath As String = "/AdventureWorks Sample Reports/Employee Sales Summary "
        Dim format As String = "MHTML"
        Dim historyID As String = Nothing
        Dim devInfo As String = "<DeviceInfo><Toolbar>False</Toolbar></DeviceInfo>"

        ' Prepare report parameter.
        Dim parameters(2) As ParameterValue

        parameters(0) = New ParameterValue()
        parameters(0).Name = "EmpID"
        parameters(0).Value = "288"
        parameters(1) = New ParameterValue()
        parameters(1).Name = "ReportMonth"
        parameters(1).Value = "6" ' June
        parameters(2) = New ParameterValue()
        parameters(2).Name = "ReportYear"
        parameters(2).Value = "2004"

        Dim credentials As DataSourceCredentials() = Nothing
        Dim showHideToggle As String = Nothing
        Dim encoding As String = ""
        Dim mimeType As String = ""
        Dim warnings As Warning() = Nothing
        Dim reportHistoryParameters As ParameterValue() = Nothing
        Dim streamIDs As String() = Nothing

        Dim execInfo As New ExecutionInfo
        Dim execHeader As New ExecutionHeader()
        Dim SessionId As String
        Dim extension As String = ""

        rs.ExecutionHeaderValue = execHeader

        execInfo = rs.LoadReport(reportPath, historyID)

        rs.SetExecutionParameters(parameters, "en-us")

        SessionId = rs.ExecutionHeaderValue.ExecutionID
        Console.WriteLine("SessionID: {0}", rs.ExecutionHeaderValue.ExecutionID)


        Try
            result = rs.Render(format, devInfo, extension, _
               encoding, mimeType, warnings, streamIDs)

            execInfo = rs.GetExecutionInfo()

            Console.WriteLine("Execution date and time: {0}", execInfo.ExecutionDateTime)


        Catch e As SoapException
            Console.WriteLine(e.Detail.OuterXml)
        End Try

        ' Write the contents of the report to an MHTML file.
        Try
            Dim stream As FileStream = File.Create("report.mht", result.Length)
            Console.WriteLine("File created.")
            stream.Write(result, 0, result.Length)
            Console.WriteLine("Result written to the file.")
            stream.Close()
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try
    End Sub 'Main
End Class

using System;
using System.IO;
using System.Web.Services.Protocols;
using myNamespace.MyReferenceName;

class Sample
{
    static void Main(string[] args)
    {
        ReportExecutionService rs = new ReportExecutionService();
        rs.Credentials = System.Net.CredentialCache.DefaultCredentials;
        rs.Url = "http://myserver/reportserver/ReportExecution2005.asmx";

        // Render arguments
        byte[] result = null;
        string reportPath = "/AdventureWorks Sample Reports/Employee Sales Summary";
        string format = "MHTML";
        string historyID = null;
        string devInfo = @"<DeviceInfo><Toolbar>False</Toolbar></DeviceInfo>";

        // Prepare report parameter.
        ParameterValue[] parameters = new ParameterValue[3];
        parameters[0] = new ParameterValue();
        parameters[0].Name = "EmpID";
        parameters[0].Value = "288";
        parameters[1] = new ParameterValue();
        parameters[1].Name = "ReportMonth";
        parameters[1].Value = "6"; // June
        parameters[2] = new ParameterValue();
        parameters[2].Name = "ReportYear";
        parameters[2].Value = "2004";

        DataSourceCredentials[] credentials = null;
        string showHideToggle = null;
        string encoding;
        string mimeType;
        string extension;
        Warning[] warnings = null;
        ParameterValue[] reportHistoryParameters = null;
        string[] streamIDs = null;
        
        ExecutionInfo execInfo = new ExecutionInfo();
        ExecutionHeader execHeader = new ExecutionHeader();

        rs.ExecutionHeaderValue = execHeader;

        execInfo = rs.LoadReport(reportPath, historyID);

        rs.SetExecutionParameters(parameters, "en-us"); 
        String SessionId = rs.ExecutionHeaderValue.ExecutionID;

        Console.WriteLine("SessionID: {0}", rs.ExecutionHeaderValue.ExecutionID);


        try
        {
            result = rs.Render(format, devInfo, out extension, out encoding, out mimeType, out warnings, out streamIDs);

            execInfo = rs.GetExecutionInfo();

            Console.WriteLine("Execution date and time: {0}", execInfo.ExecutionDateTime);


        }
        catch (SoapException e)
        {
            Console.WriteLine(e.Detail.OuterXml);
        }
        // Write the contents of the report to an MHTML file.
        try
        {
            FileStream stream = File.Create("report.mht", result.Length);
            Console.WriteLine("File created.");
            stream.Write(result, 0, result.Length);
            Console.WriteLine("Result written to the file.");
            stream.Close();
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }

    }
}

See Also

Reference