Custom Data Processing Extension, use in SSRS Report Properties - References

I've built a Custom Data Processing Extension (CDPE) and registered it
successfully (ie. it shows up in the new datasources dialog/drop-down and saves just fine, for VS2010-2014). It is intended to be a custom (XML-based) DataSource. However, based on the "nature of the beast", I also need to have a Custom Query
Designer (CQD) for development testing of the CDPE.
Here are the errors I get for the CQD:
Pulling a report up in "Report Preview", which is wired to the CDPE->CQD, I get:
"An error occurred during local report processing. The definition of the report '/TestDS' is invalid. Error while loading code module: 'Microsoft.ReportingServices.Interfaces, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91'. Details:
Could not load file or assembly 'Microsoft.ReportingServices.Interfaces, Version=11.0.0.0, Culture=neutral, PublicKeyToken 89845dcd8080cc91' or one of it's dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception
from HREULT: 0x80131040)"
My CDPE directly includes Microsoft.ReportingServices.Interfaces.dll AND matches everything as far as version and key. It also includes Microsoft.ReportingServices.QueryDesigners.dll required for the CQD.
I've written other WORKING CDPEs but not one with a CQD (Query Designer Custom replacement in Visual Studio). All the references from what I can tell are OK. I think CQDs are screwed up for XML datasources. The interfaces are not right.
(will explain further on)
From the "Data Sources", Dataset Properties, I click on the "Query Designer", I get:
"An error occurred while loading the query designer 'DATASET' (which is the name of the CDPE). Query Designer: Object reference not set to an instance of an object."
I "think" XML type CDPEs are trying to execute a web services call, versus working properly/CORRECTLY with a
text-based query for XML. The reason I say this is that I've created both WinForm and WebForm test harnesses. They both come up with this error: "...Failed to prepare web request for the specified URL. (rsXmlDataProviderError), Invalid
URI: The URI is empty." (which is nonsense, there is no request, the query is simply text/file-based stuff, and I read locally ALL of the XML data expected for testing without issue -> I'm ONLY making the CDPE XML-based because I have custom
WCF calls which already work). (If you really want to understand overall architecture, please see my post: http://social.msdn.microsoft.com/Forums/en-US/d15d9206-95d7-473a-a7f9-a38b4279de8c/ssrs-extension-which-to-use?forum=sqlreportingservices&prof=required
Other than "100 mile" overviews from Microsoft, this has got to be some of the worst documented stuff I've ever seen (
http://msdn.microsoft.com/en-us/library/microsoft.reportingservices.interfaces.iquerydesigner.aspx ). Remote Debugging it doesn't work 95% of the time.
My environment is VS2013 Ultimate with BI and SQL Server 2012 SP1.
Thanks Rob
Rob K

Update:
I can now see the Custom Query Designer and get anticipated results (after some fooling around with different combinations).
Here's how things were broken by the MS SQL Server 2012 product/release team:
1. they upgraded to .Net v4.x here (to support SharePoint, AX, MS Data Tools, etc.)
C:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn\ManagementStudio\Microsoft.ReportingServices.QueryDesigners.dll
C:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn\ManagementStudio\Microsoft.ReportingServices.Interfaces.dll
2. they left c:\Program Files\Microsoft SQL Server\MSRS.11.MSSQLSERVER\Reporting Services\ReportServer\bin\Microsoft.ReportingServices.Interfaces.dll at .Net
v2.x
3. they don't support Custom Extensions (which use a Query Designer) with anything higher than .Net v3.5
In my case, I had to segregate:
a. Report Definition Custom Extension to v4.5
b. Custom Data Processing Extension to v3.5
c. Custom Query Designer to v4.x
d. my WCF/SSO to v4.5.1.
#2 and #3 above, in my humble opinion are simply dead wrong as far as what you ever want to do in the release cycle (I can see there being an early/first release exception(s), but 2 years out and a successor product (2014) should have meant that this
was rectified more than a year ago.)
Whomever failed to get this communicated in the 2012 documentation created even more havoc than an average developer can decipher:
http://msdn.microsoft.com/en-us/library/microsoft.reportingservices.interfaces.iquerydesigner(v=sql.110).aspx
(I'm still working on how to get the remote debugger working consistently.)
Rob

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Calling a Stored Procedure using SSRS Custom Data Processing Extension

I need SSRS Custom Data Processing Extension to call a stored procedure for my ssrs report. I refered many links regarding this, but i cannot find it. Instead of that there are examples for Data processing extensions that uses XML files and also multiple
data sources.
I want Data Processing Extension to call a stored procedure.
Please Help. Thanks in advance

Sorry why do you need a Data Processing Extension for that? Cant you directly call the procedure
from SSRS dataset? Whats the RDBMS which holds this procedure?
Please Mark This As Answer if it solved your issue
Please Vote This As Helpful if it helps to solve your issue
Visakh
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SSRS Custom Data Processing Extension Error

I am using Custom Data Processing Extension to call a stored procedure. Iam getting following error when creating a dataset in report designer using the extension. I wrote the code in c#.
could not update a list of fields for the query. verify that you can connect to the data source and that your query syntax is correct.(Details-Object reference not set to an instance of an object.)
Here is my code
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Data;
using System.Data.SqlClient;
using Microsoft.ReportingServices.DataProcessing;
using System.Diagnostics;
using System.Text.RegularExpressions;
namespace DataBaseDPE
public class DBConnection:Microsoft.ReportingServices.DataProcessing.IDbConnectionExtension
private string mconnstring;
private string localname = "Database Connection";
private ConnectionState mState = ConnectionState.Open;
public DBConnection()
Debug.WriteLine("DataSetConnection: Default Constructor");
public DBConnection(string Dconnection)
Debug.WriteLine("DataSetConnection Constructor overloaded with Connection String ");
mconnstring = Dconnection;
public Microsoft.ReportingServices.DataProcessing.IDbTransaction BeginTransaction()
return (null);
public string ConnectionString
get
return mconnstring;
set
mconnstring = value;
public int ConnectionTimeout
get
return 0;
public ConnectionState State
get
return mState;
public void Open()
mState = ConnectionState.Open;
return;
public void Close()
mState = ConnectionState.Closed;
return;
public Microsoft.ReportingServices.DataProcessing.IDbCommand CreateCommand()
return new DBCommand(this);
public string LocalizedName
get
return localname;
set
localname = value;
public void SetConfiguration(string configuration)
try
SqlConnection sqlconn = new SqlConnection("Data Source=localhost;Initial Catalog=AdventureWorks2000;Integrated Security=True;");
catch (Exception e)
throw new Exception(e.Message, null);
public void Dispose()
public string Impersonate
{ get; set; }
public bool IntegratedSecurity
{ get; set; }
public string Password
{ get; set; }
public string UserName
{ get; set; }
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.ReportingServices.DataProcessing;
using System.Data.SqlClient;
namespace DataBaseDPE
public class DBCommand : Microsoft.ReportingServices.DataProcessing.IDbCommand
DBConnection mconnection = null;
private string mCmdText;
private int mCmdTimeOut = 30;
private CommandType CmdType;
public DBCommand()
public DBCommand(string CmdText)
mCmdText = CmdText;
public DBCommand(DBConnection aConnection)
mconnection = aConnection;
public void Cancel()
throw new NotImplementedException();
public string CommandText
get
return mCmdText;
set
mCmdText = value;
public int CommandTimeout
get
return mCmdTimeOut;
set
mCmdTimeOut = value;
public CommandType CommandType
get
return CmdType;
set
CmdType = value;
public IDataParameter CreateParameter()
return (null);
public class MySqlDataReader:Microsoft.ReportingServices.DataProcessing.IDataReader
private System.Data.IDataReader sourceDataReader;
private System.Data.DataTable dt;
private System.Data.DataSet ds;
private int fieldCount = 0;
private string fieldName;
private int fieldOrdinal;
private Type fieldType;
private object fieldValue;
private int currentRow = 0;
public MySqlDataReader(System.Data.IDataReader datareader)
this.sourceDataReader = datareader;
public MySqlDataReader(System.Data.DataTable dt)
// TODO: Complete member initialization
this.dt = dt;
public MySqlDataReader(System.Data.DataSet ds)
// TODO: Complete member initialization
this.ds = ds;
public int FieldCount
get
fieldCount = ds.Tables[0].Columns.Count;
return fieldCount;
public Type GetFieldType(int i)
fieldType =
ds.Tables[0].Columns[i].DataType;
return fieldType;
public string GetName(int i)
fieldName = ds.Tables[0].Columns[i].ColumnName;
return fieldName;
public int GetOrdinal(string name)
fieldOrdinal =
ds.Tables[0].Columns[name].Ordinal;
return fieldOrdinal;
public object GetValue(int i)
fieldValue =
ds.Tables[0].Rows[this.currentRow][i];
return fieldValue;
public bool Read()
currentRow++;
if (currentRow >= ds.Tables[0].Rows.Count)
return (false);
else
return (true);
public void Dispose()
public IDataReader ExecuteReader(CommandBehavior behavior)
string query = "SampleSP";
SqlConnection readerconn = new SqlConnection("Data Source=localhost;Initial Catalog=AdventureWorks2000;Integrated Security=SSPI");
SqlCommand readercmd = new SqlCommand(query);
readerconn.Open();
readercmd = readerconn.CreateCommand();
readercmd.CommandText = query;
readercmd.CommandType = System.Data.CommandType.StoredProcedure;
readerconn.Close();
SqlDataAdapter adapter = new SqlDataAdapter(query,readerconn);
readerconn.Open();
adapter.SelectCommand = readercmd;
System.Data.DataTable dt = new System.Data.DataTable();
adapter.Fill(dt);
System.Data.DataSet ds = new System.Data.DataSet();
adapter.Fill(ds);
return new MySqlDataReader(ds);
public IDataParameterCollection Parameters
get { return (null); }
public IDbTransaction Transaction
get
return (null);
set
throw new NotImplementedException();
public void Dispose()
Please help me, Thanks in advance

Sorry why do you need a Data Processing Extension for that? Cant you directly call the procedure
from SSRS dataset? Whats the RDBMS which holds this procedure?
Please Mark This As Answer if it solved your issue
Please Vote This As Helpful if it helps to solve your issue
Visakh
My Wiki User Page
My MSDN Page
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Custom Data Processing Extension and Parameters

Hello,
I have successfully implemented a custom data processing extension. Now I'm trying to add parameters, but the documentation is very weak on this topic. Also all examples of custam data processing extensions I have found so far are working without parameter support. Using a search engine I have found a custom data processing extension's sequence diagram during report execution. The related article also gives some hints about the IDbCommandAnalysis interface.
The GetParameters implementation creates a parameter collection based on the current command text and returns this collection. So far no problem.
My question is how to implement the IDbCommand's CreateParameter method and Parameters property? In CreateParameter I just return a new instance of my IDataParameter implementation, and the Parameters property returns a new parameter collection based on the current command text.
Is this ok so? At least this is the first implementation which seems to work in the data designer. If I share an instance variable for GetParameters and Parameters I will either get all parameters twice or BIDS will crash when pressing the execute button in the dataset designer - depending on my actual implementation.
What I'm still missing is how to get the parameters added automaticall to the dataset's properties parameter register?
thanx in advance and kind regards, Gerald

I think that finally (after some days of trying) I could make it work. The dataset and report parameters are reflecting the command text's parameters now (BTW: to answer my last question - the dataset's properties are updated after pressing the refresh button only). The road to success was not to use the same member variable for the collections returned by IDbCommandAnalysis:GetParameters() and IDbCommand:Parameter and not to fill the latter one with the command text's parameters (see partial source code below).
public sealed class MyCommand : IDbCommand, IDbCommandAnalysis
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        get { return this.m_commandText; }
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        get { return m_parameters; }
    public IDataParameter CreateParameter()
        return new MyParameter();
    public IDataParameterCollection GetParameters()
        return GetParameterCollection();
    private void SetCommandText(string commandText)
        m_commandText = commandText;
    private MyParameterCollection GetParameterCollection()
        // ... create parameter collection based on m_commandText
Still there are some open questions:
How can I update the report parameter's properties? Now the parameter's data type is always string, but I'd like to assign the right data type. I'd also like to tag the parameters as hidden and supply a non-queried default value. Is this possible? How?
Although I my implementation of IDbCommandAnalysis:GetParameters() returns a collection containing the parameter names and values the "prompt query parameters" dialog (after pressing the query designer's execute button in the toolbar) shows a "<blank>" value for the parameters. What could be the problem?
Thanx in advance and regards,
Gerald

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<d:StartTime m:type="Edm.DateTime">2014-03-21T00:00:00</d:StartTime>
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<d:StartTime m:type="Edm.DateTime">2014-03-21T00:00:00</d:StartTime>
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Hi SharpBud,
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This is a confirmed issue, as a workaround, I would suggest you to use a calculate column for the event for the column, using the following format:
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Hi RK,
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Hi SKM,
So you mean to say that Go to DataSource->Add Dataset-> Query Type-Text-> Under Query:
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Like
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='Hyderabad' "
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="SELECT customer_name, telephone_number, address1, address2, city from MyTable
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‘Delhi’) will not throw any error.
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query
Thanks It is working fine but it is tough job if query is big.
Hi S kumar,
The above approach we use when we have source like DB2, becasue DB2 has some syntactical differences to pass multivalue paramaeter. I tested and it works good, if i am mentioning the query in above format by using Fx button while creating dataset.
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Hi There,
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Dim CommandText As String = ""
' Get Parameters for CDE GetData
CommandText = txtAdoCds.Text
Dim Rdr As New BstCds.BaanstedeCdsReader(CommandText)
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End If
End_Method:
End Sub
'=========================================================================
' File: BaanstedeCdsReader.vb
' Summary: Provides a means of reading one or more forward-only streams
' of result sets obtained by executing a command at a data source,
' and is implemented by Baanstede Data Processing Extensions
' that access BaanstedeIw3-routines.
'=========================================================================
Public Class BaanstedeCdsReader
Implements IDataReader
#Region "Public Variables"
Public RdrRetVal As Boolean = False
Public RdrSqlSel As String = ""
Public RdrDataTable As DataTable = New DataTable
#End Region
#Region "Constructors"
#End Region
#Region "IDataReader Members"
#End Region
' GetData '
#Region "GetData Method"
'==================================================================================================
'We are executing the command using the connection string that connects to the Active Directory.
'Hard coding of the connection string is because it is the same for all the ADs.
'Once we read the data using a DataReader, we place the same in a DataTable so that can be used for
'Other processings.
' Public Sub GetData(ByVal _CommandText As String)
' Output in Public RdrDataTable As DataTable
'==================================================================================================
Public Sub GetData(ByVal _CommandText As String)
' Ophalen Data in DataTabel '
RdrRetVal = False
' Fills RdrDataTable Using _COmmandText
RdrRetVal = True
End Sub
But can I invoke Report Manager Source Type BaanstdeCds's .BaanstedeCdsReader.GetData(CommandText) in TSQL any other way then using CLR ?
Regards Jos
It works, but it does not work (The program runs, but does not produce the desired result)

Hi Josje,
Thank you for your question.
I am trying to involve someone more familiar with this topic for a further look at this issue. Sometime delay might be expected from the job transferring. Your patience is greatly appreciated.
Thank you for your understanding and support.
Thanks,
Wendy Fu
Wendy Fu
TechNet Community Support

Custom Data Provider Not Registered in Report Server (Sql Server 2012)

We have a simple test report project set up and can preview the reports with no errors or problems from the designer. We can deploy the report project, but when trying to view the reports from the browser, we get the following error:
An error as occurred during report processing, (rsProcessingAborted)
An attempt has been made to use a data extension 'LiMeDAS' that is either not registered for this report server or is not supported in this edition of Reporting Services. (rsDataExtensionNotFound)
I have followed this article that explained how to register a data provider extension:
https://msdn.microsoft.com/en-ca/library/bb326409.aspx
I have placed the assemblies in:
C:\Program Files\Microsoft SQL Server\MSRS11.LIMEDAS\Reporting Services\ReportServer\bin
Added the following line to the rsreportserver config file (inside the <extensions><data> tags)
<Extension Name="LiMeDAS" Type="Limedas.Data.Provider.LimedasConnection,Limedas.Data.Provider"/>
and finally added the following to the rssrvpolicy config file (inside the top level CodeGroup tag):
<CodeGroup class="UnionCodeGroup" version="1" PermissionSetName="FullTrust" Name="LiMeDASDataProviderCodeGroup" Description="Grants permission to the LiMeDAS data processing extension for reporting services.">
<IMembershipCondition class="UrlMembershipCondition" version="1" Url="C:\Program Files\Microsoft SQL Server\MSRS11.LIMEDAS\Reporting Services\ReportServer\bin\Limedas.Data.Provider.dll"
/>
</CodeGroup>
We have the data extension set up perfectly for the designer, because I can see it as a type of connection and the preview works in the designer.
But, for some reason it does not work in the server. They were set up the same way, but the server will not work. From the report manager page, when we try to add a data source, the only type option is Sql Server, none of the other extensions mentioned in
the config file. Does anyone know what else could cause this issue?

Hi Justin,
According to the error message and the issue can be caused by the edition of your SSRS is not support for the custom data provider. For example the express edition have limitation support on this:
Features Supported by the Editions of SQL Server 2012 .
If your edition is the supportted edition and the issue can be caused by the custom data provider do not necessarily support all the functionality supplied by Reporting Services data processing extensions. In addition, some OLE DB data providers and ODBC
drivers can be used to author and preview reports, but are not designed to support reports published on a report server. For example, the Microsoft OLE DB Provider for Jet is not supported on the report server. For more information, see
Data Processing Extensions and .NET Framework Data Providers (SSRS).
If you are running on a 32-bit platform, the data provider must be compiled for a 32-bit platform. If you are running on a 64-bit platform, the data provider must be compiled for the 64-bit platform. You cannot use a 32-bit data provider wrapped with 64-bit
interfaces on a 64 bit platform.
More details information:Data Sources Supported by Reporting Services (SSRS)
Similar thread for your reference：
ERROR: An attempt has been made to use a data extension 'SQL' that is not registered for
this report server.
Error when viewing SSRS report with SQL Azure as data source
If you still have any problem, please feel free to ask.
Regards
Vicky Liu
Vicky Liu
TechNet Community Support

Adding a custom rendering extension to SQL Server Reporting Services 2012 for SharePoint 2010 integrated mode

We are attempting to add OfficeWriter report rendering extensions for SSRS 2012 in SharePoint (2010) integrated mode through powershell. The documentation for “New-SPRSExtension” is rather
sparse and we have not found any clear examples on the internet. With SSRS 2012 in native mode, we make the following two changes to the config files:
We add the following report rendering extension declaration to
RSReportServer.config:
<Configuration>
    <Extensions>
<Render>
<Extension Name="XLTemplate" Type="SoftArtisans.OfficeWriter.ReportingServices.ExcelTemplateRenderer,
SoftArtisans.OfficeWriter.RS2008"/>
<Extension Name="WordTemplate" Type="SoftArtisans.OfficeWriter.ReportingServices.WordTemplateRenderer,
SoftArtisans.OfficeWriter.RS2008"/>
</Render>
    </Extensions>
</Configuration>
We add the following security trust codegroup to
RSSvrPolicy.config:
<configuration>
    <mscorlib>
<security>
<policy>
<PolicyLevel version="1">
  <CodeGroup version="1" PermissionSetName="Nothing">
  <CodeGroup
                          version="*"
                          PermissionSetName="FullTrust"
                          Name="SoftArtisans_OfficeWriter_Strong_Name"
                          Description="This
code group grants SoftArtisans OfficeWriter code full trust.">
                      <IMembershipCondition
                          class="StrongNameMembershipCondition"
      version="*"
      PublicKeyBlob="00240000048000009400000006020000002400005253413100040000010001004779CB207F11
      5E86EF9DD3233F9F130F8891911345176650F72330F84CA3F54C96DEB08439680660F02872EEF5DA3955
      A14C63F96E57DFB71B1535280C37DA2CB5BA37D78A9882414DB11F67FD66DEBC4AD93DD34F4A587D34D
      B4D23D9C6AF83431D88A7EF42BB01082913F3560DCB50129C5BBA7ECA0DE8BC286DA74F58FADE"/>
</CodeGroup>
</CodeGroup>
</PolicyLevel>
    </policy>
</security>
</mscorlib>
</configuration>
What would be the equivalent syntax for “New-SPRSExtension” to do the above for SSRS 2012 in SharePoint (2010) integrated mode?
Alison Bird SoftArtisans Technical Services www.softartisans.com

Hi Alison,
Unlike the deployment of other custom extensions such as custom delivery extension and data processing extension, it is not necessary to add a code group for the custom assembly that grants FullTrust permission for the extension during the deployment of
custom rendering extension. If you have copy the custom assembly to the %ProgramFiles%\Microsoft SQL Server\MSRS11.<InstanceName>\Reporting Services\ReportServer\Bin folder, and modify the RSreportserver.config file to add the extention entry properly,
please open the SSRS Service Application created on the SharePoint and verify that your extension is included in the list of available export types for a report.
Reference:
Deploying a Rendering Extension
Regards,
Mike Yin
TechNet Community Support

Custom Data Processing Extension, use in SSRS Report Properties - References

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