ReportExecutionService.Render 方法

public:
 cli::array <System::Byte> ^ Render(System::String ^ Format, System::String ^ DeviceInfo, [Runtime::InteropServices::Out] System::String ^ % Extension, [Runtime::InteropServices::Out] System::String ^ % MimeType, [Runtime::InteropServices::Out] System::String ^ % Encoding, [Runtime::InteropServices::Out] cli::array <ReportExecution2005::Warning ^> ^ % Warnings, [Runtime::InteropServices::Out] cli::array <System::String ^> ^ % StreamIds);

public byte[] Render(string Format, string DeviceInfo, out string Extension, out string MimeType, out string Encoding, out ReportExecution2005.Warning[] Warnings, out string[] StreamIds);

member this.Render : string * string * string * string * string * Warning[] * String[] -> byte[]

Public Function Render (Format As String, DeviceInfo As String, ByRef Extension As String, ByRef MimeType As String, ByRef Encoding As String, ByRef Warnings As Warning(), ByRef StreamIds As String()) As Byte()

參數

傳回

報告的 位元組[] 陣列，格式依規定。

範例

要編譯以下程式碼範例，您必須參考 Reporting Services WSDL 並匯入特定命名空間。 欲了解更多資訊，請參閱編 譯與執行程式碼範例。 以下程式碼範例以 MHTML 渲染報告，並將其儲存為 .mht 檔案至磁碟。

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);  
        }  

    }  
}  

備註

下表顯示此操作的標頭與權限資訊。

Render 呈現與標頭中所識別 ExecutionInfo 的報告執行相關的處理中報告。 若執行狀態中處理中的報告不存在暫存快照，此方法將執行該報告（前提是符合所有憑證與參數要求），並建立執行狀態的臨時快照。 若報告因非查詢參數值改變而被重新處理，則會建立新的暫存快照。 欲了解更多執行狀態資訊，請參閱 識別執行狀態。

若執行選項設為快取或執行快照，呼叫 可 Render 使用現有快照。

若報告設定為快取，且提供的參數值與憑證相符，快照的快取副本可能會被載入，而非實際處理報告。

若憑證與參數要求未達標，此方法將回傳錯誤。

若渲染擴充套件支援指定多個頁面，後續呼叫 可用 Render 來擷取報告的額外頁面。

Render 方法的一個限制是輸出無法串流，因此整個檔案必須在記憶體中。

請參閱 「識別執行狀態 」一節，討論執行生命週期，其中包含載入與呈現報告所需步驟的說明。