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()

参数

返回

指定格式的报表的 Byte[] 数组。

示例

若要编译以下代码示例，必须引用 Reporting Services WSDL 并导入某些命名空间。 有关详细信息，请参阅 编译和运行代码示例。 下面的代码示例在 MHTML 中呈现报表，并将其作为 .mht 文件保存到磁盘。

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);  
        }  

    }  
}  

注解

下表显示了有关此操作的标头和权限信息。

Render 呈现与标头中 ExecutionInfo 标识的报表执行关联的已处理报表。 如果执行状态中已处理的报表不存在临时快照，则此方法将在满足所有凭据和参数要求) (执行报表，从而为执行状态创建临时快照。 如果由于非查询参数值更改而重新处理报表，则会创建新的临时快照。 有关执行状态的详细信息，请参阅 标识执行状态。

如果执行选项设置为缓存或执行快照，则对 Render 的调用可能会使用现有的快照。

如果将报表设置为缓存，并且提供的参数值和凭据匹配，则可能会加载快照的缓存副本，而不是实际处理报表。

如果不满足凭据和参数要求，此方法将返回错误。

如果呈现扩展插件支持指定多个页面，则后续调用 Render 可用于提取报表的其他页。

Render 方法的一个限制是无法流式传输输出，因此整个文件必须位于内存中。

有关执行生命周期的讨论，请参阅 标识执行状态 ，其中包括加载和呈现报表所需步骤的说明。

适用于