SSRS 2008 R2/SSRS 2012 Tab Delimited setup is not working correctly in Report Designer

Question

I have changed a RSReportDesigner.config to add a tab delimited option for report export, but it is not working correctly in vs2008/vs2010 report designer. I get a duplicate of CSV (comma delimited) in the export dropdown list.
I have tested SSRS 2008 R2/SSRS 2012 on Windows 7 64 bit professional.
It is working correctly in the report manager.
<Extension Name="TAB" Type="Microsoft.ReportingServices.Rendering.DataRenderer.CsvReport,Microsoft.ReportingServices.DataRendering">
        <OverrideNames>
            <Name Language="en-US">TAB delimited</Name>
        </OverrideNames>
        <Configuration>
            <DeviceInfo>
                <FieldDelimiter xml:space="preserve">&#9;</FieldDelimiter>
                <Encoding>ASCII</Encoding>
                <UseFormattedValues>False</UseFormattedValues>
                <NoHeader>False</NoHeader>
                <FileExtension>TXT</FileExtension>
            </DeviceInfo>
        </Configuration>
      </Extension>

Answer 1

Hi Dave0323,
According to your description, you want to export your report into TXT file and change the delimiter to be a Tab. Right?
In Reporting Services, when exporting to a CSV file, we can change the default field delimiter to any character that we want, including TAB, by changing the device information settings in the configuration file. For example, to use TAB,
update the FieldDelimiter setting to <FieldDelimiter xml:space="preserve">[TAB]</FieldDelimiter>. And we can change the FileExtension to be TXT if we want to export it into a TXT file. So in this scenario, we just need to modify the configuration
file like below:
The result looks like below:
Reference:
CSV Device Information Settings
If you have any question, please feel free to ask.
Best Regards,
Simon Hou