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Changing an individual character within a string

I've been struggling with this for a while. It's such a simple question that I've been reluctant to ask it.

How do you change an individual character within a string without replace or substring/remove in visual c++ .net?

The .net equivalent of :

st[index] = '\newvalue';

I have to use this method because the file I have a problem with needs extra carriage returns filtered out of it and the newline/carriage return's that are in the right place left alone.

I thought about this:
arbSt = mainSt->Substring(indexOfExtraCrLf - 10, 20); // arbitrary length to make sure replace doesn't replace everything
tmpSt = mainSt->Substring(beginning - 10, 20)->Replace("\r\n", " ");
mainSt->Replace(arbStr, tmpSt);

That would work, but I'd rather know a better way so I don't end up doing that for every typo within my source file.

Thanks!

_david

AlexFM

.NET string object is immutable, this means, it's value cannot be changed once it is created. Functions like Trim, Replace, Substring return new string instance and don't change original string.

_davidharris

ASKER

Is there a way to change that string into an array of bytes and then change the byte value, and then convert (or dump the byte array to a file) the byte array to a string?

_david

ASKER CERTIFIED SOLUTION

AlexFM

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_davidharris

ASKER

I just ended up using replace and substring. Thanks for your help!

_david

_davidharris

ASKER

       // check each field for characters that are not alphanumeric or punctuation
             for (char_i = 0; char_i != field->Length; char_i++)
                   if (!(Char::IsLetterOrDigit(field[char_i]) || Char::IsPunctuation(field[char_i])))
                         field = field->Replace(field[char_i], ' ');

That's what I ended up with! Which works just the same.

_david