Thread: Removing the last char from a string

  1. #1
    Registered User
    Join Date
    Sep 2007

    Removing the last char from a string

    I have a text box that contains a string. When I click the "backspace" button I want to remove the last character in a string. I have tried everything I can think of, and it should be working. But instead it always removes the last two characters, the various different ways I've tried. I wasn't sure if C# strings contain the null terminator or not, but I don't see that affecting it. So some how, it's removing the last character, and than overriding the new last character with the null terminator maybe? Any ideas?

    textEntryBox.Text = textEntryBox.Text.Substring(0, textEntryBox.Text.Length - 1);

  2. #2
    Hurry Slowly vart's Avatar
    Join Date
    Oct 2006
    Rishon LeZion, Israel
    I do not understand, in a regular textbox when you press backspace it removes last char without writing any code.

    Why the default behavior is not good for you?
    All problems in computer science can be solved by another level of indirection,
    except for the problem of too many layers of indirection.
    David J. Wheeler

  3. #3
    Confused Magos's Avatar
    Join Date
    Sep 2001
    It removes 2 because the defaults behavoiur of a textbox when backspace is pressed is to remove the character in front of the marker. Then you remove the last character. 1+1=2.

    Give a man a fish and you feed him for a day.
    Teach a man to fish and you feed him for a lifetime.

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