SSRS Connection String Search

WITH XMLNAMESPACES 
    -- XML namespace def must be the first in with clause. 
    (
    DEFAULT 
    'http://schemas.microsoft.com/sqlserver/reporting/2006/03/reportdatasource'
    ,
    'http://schemas.microsoft.com/SQLServer/reporting/reportdesigner' 
    AS rd
    )
    ,SDS
AS (
    SELECT SDS.NAME AS SharedDsName
        ,SDS.[Path]
        ,CONVERT(XML, CONVERT(VARBINARY(max), content)) AS DEF
    FROM dbo.[Catalog] AS SDS
    WHERE SDS.Type = 5
    ) -- 5 = Shared Datasource 
SELECT CON.[Path]
    ,CON.SharedDsName
    ,CON.ConnString
FROM (
    SELECT SDS.[Path]
        ,SDS.SharedDsName
        ,DSN.value('ConnectString[1]', 'varchar(150)') AS 
        ConnString
    FROM SDS
    CROSS APPLY SDS.DEF.nodes('/DataSourceDefinition') AS R(DSN
        )
    ) AS CON
-- Optional filter: 
-- WHERE CON.ConnString LIKE '%Initial Catalog%=%TFS%' 
WHERE CON.ConnString like '%C1%'
ORDER BY CON.[Path]
    ,CON.SharedDsName;