Von einem String vorne und hinten alle Leerzeichen entfernen

[Dragon27]

Hallo,

ich komme einfach nicht weiter.... Ich würde gerne alle Leerzeichen von einem String vorne und hinten löschen.

Sprich aus dem (_ = Leerzeichen):

Zitat:

____________Hallo Welt! Wie Gehts?_____________

Soll das werden:

Zitat:

Hallo Welt! Wie Gehts?

Könnt Ihr mir helfen wie man soetwas machen kann?

danke!

[Klaus01]

mit der Funktion trim

Grüße
Klaus

[Delphi-Lover]

Hello,

Try this:

Delphi-Quellcode:

Function DeleteChar(strValue : String; aChar : Char) : String;
Var CharPos : Integer;
Begin
  Repeat
    CharPos:=Pos(aChar,strValue);
    If CharPos<>0 Then Delete(strValue,CharPos,1);
  Until CharPos=0;
  Result:=strValue;
End;

Greets,

Delphi-Lover.

[Klaus01]

Zitat:

Zitat von Delphi-Lover

Hello,

Try this:

Delphi-Quellcode:

Function DeleteChar(strValue : String; aChar : Char) : String;
Var CharPos : Integer;
Begin
  Repeat
    CharPos:=Pos(aChar,strValue);
    If CharPos<>0 Then Delete(strValue,CharPos,1);
  Until CharPos=0;
  Result:=strValue;
End;

Greets,

Delphi-Lover.

Just a remark to your code.
Your Code will also delete characters that are located
in the String and not only the leading and trailing characters.

Regards
Klaus

[Delphi-Lover]

Hello Klaus,

Stimmt :-D , but to keep care of the characters in the string was not part of the question :lol:
The trim function of your answer only deletes "space" characters and the control characters.

Greetings,

Delphi-Lover.

[glkgereon]

Zitat:

Zitat von Delphi-Lover

Hello Klaus,

Stimmt :-D , but to keep care of the characters in the string was not part of the question :lol:
The trim function of your answer only deletes "space" characters and the control characters.

Greetings,

Delphi-Lover.

The question was to eliminate all spaces before and behind the "main string". (and only these!)
that is perfectly done by trim :-)

[leddl]

Zitat:

Zitat von Delphi-Lover

The trim function of your answer only deletes "space" characters and the control characters.

And that was exactly what Dragon27 asked for :zwinker:

[xaromz]

Hello,

Zitat:

Zitat von Delphi-Lover

but to keep care of the characters in the string was not part of the question :lol:

Preserving space characters inside the string was part of the question, which your code clearly doesn't.

Greets
xaromz

[Delphi-Lover]

Hello,

Sorry, I read the question so that the problem was to delete the "_" characters. (underscore). Nothing about space or control chatcharaters. If you see my code it will delete those "_" characters and leave the space characters.
Misunderstood the "_ = Leerzeichen". word. :cyclops: Could not believe it was about space characters what indeed can be solved by the trim function.

Greets,

Delphi-Lover.

[mkinzler]

Dragon27 just uses then uderscores to visualize space characters as he wrote in this question (spaces = Leerzeichen)