Trimming down "not SO empty" strings*resolved*

[AJirenius]

Well I guess this is a very basic question with a very basic answer but then again I'm a very basic programmer

(Yes I do search the forum and the MSDN-library but it looks like I'm just bad at it )
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Now I do have a textbox with limited Maxlength of 100 Chars

Whenever changed I send the text to strTemp (which also have a limited size of *100)

Now I want to trim down the string to just visible characters but the string is full of those stupid squares that does NOT count as empty but still doesn't show anything.

Reason why is that I want to shrink my filelength that is full of those "characters".

Briefly:

strNewString = trim(strTemp)
does not give me
strNewString = "" but strNewString= "..."

Is there an easy way to solve this or do I have to check the ascii codes of every car??? (sounds like a stupid idea)

Thanks!