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

Greetings,

Delphi-Lover.

[glkgereon]

Zitat von Delphi-Lover:

Hello Klaus,

Stimmt , but to keep care of the characters in the string was not part of the question
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 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

[xaromz]

Hello,

Zitat von Delphi-Lover:

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

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. 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)