SSRS, search for specific characters in a string

I have an SSRS report that returns a varchar field.  The source data is sometimes always in Caps and I have to change it to normal case in the report.  I use custom code to do this.


The current code I am using is below.

Public Function ConvertToTitleCase(inputStr) as String

  dim outputStr 

select case inputStr.Substring(0, 3) 

case "DFA"

   outputStr  = inputStr.Substring(0, 3) +StrConv(inputStr.Substring(3),vbProperCase)


       return outputStr


case else 

   outputStr  = StrConv(inputStr,vbProperCase)

       return outputStr

end select

End Function

Select allOpen in new window

As you can see I have an exception for when the first three characters are "DFA", however it has come to my attention that I may have other exceptions that I have to look for as well.  The problem is the other exceptions can come at varying places in the string so I can't look at a specific place.  I need some custom code that can look for specific characters in the string and keep them capitalized while the rest of the string is proper case.  Is this possible?

My plan is to first convert the entire string into proper case and then pass it through a case statement to look for these exceptions and switch the exceptions back to capital letters in the string.  

The exceptions will never actually be a word in the English language and there are no spaces in the exception words so I don't have to worry about accidentally capitalizing the wrong word, I just don't know how to parse through a string and find a specific set of characters in order.  For the record my exceptions are:

PIMCO
II
III
TDA
JP
DFA
US (us will never show up as the word "us" it will always be capitalized)