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    Dear Alpha programmer,

    My need should be simple, but not able to get my thinking right. Hope to get a quick help.

    My requirement as follow :
    1) Need to enter student id in 10 characters long
    2) Format is such 12345-67891
    3) When ID number start with leading zero ie : 01234567899
    should be treated as 01234-67899
    4) Below is the list of my basic codes.
    5) Problem I got is that when data of 1234567890 being entered will produced 12345-6789 with missing the last digit
    6) And when the leading zero is being used, it will produce
    ie : 0123456789 (10 digits long) will produce data as
    2345-6789 (I expect 01234-56789)

    0012345678 will produce 123-4567 (i expect 00123-45678)

    example of my code:


    Can anyone help me with a correction.
    Thanks you and your assistance is greatly appreciated.

    Ken Tjia

  • #2

    if you want leading zeros, you can not use ui_get_number
    Numbers drop leading zeros.
    Why don't you create a script and then just play the script for the data entry.
    Example below

    DIM Global SID As C

    ' Prompts the user for a Student ID number
    ' -------------------------------------
    text_string = ui_get_text("SID", "Enter Student ID Number for Selection"," ","&&&&&-&&&&&")
    IF text_string = " " THEN
    ui_msg_box("SID", "Student ID Number invalid.")
    var->SID = text_string
    END IF

    Charlie Crimmel


    • #3

      Ken, let me elaborate on Charlie's idea.

      ui_get_number returns the result in a string of text characters.

      Your expression then uses the val() function to convert that string into a number. It's here that a leading zero in the char string gets tossed out. The string '00010' becomes the number 10 when the val() function finishes its work.

      So, when you get ready to parse the string, somewhere else, in code you don't show us, you must be converting the numeric value back into a string. When you do that using the STR() function, the number 10 becomes the string '10'. It will not restore the leading zeros. It will right justify the string result, padding the string with leading blanks, not zeros.

      Hope this helps.

      -- tom


      • #4

        thank you both gentleman for your help.
        i should have realized ui_get_number will stripped "zero"
        that makes sense.

        Will try it this afternoon.

        Ken Tjia


        • #5


          The ui_get_number() does not strip the zeros. As Tom Cone said, it's the val() function that does that.

          Here's a useful hint for future use:

          When not sure how a function works, go to the "Interactive" window in the code editor and try it there. Put a question mark in front of it to see the result as shown below:
          ?ui_get_number( "WHAT NUMBER", "Type your number", "000123" )
          If you run that in the interactive window and accept the default (000123) you should see this as the result:
          = "000123"

          Similarly, using the val() function you will see this:
          ?val( "000123" )
          = 123.000000

          If you need to run multiple Xbasic lines at one time, type them as one line and use a semi-colon to separate them. This is an example I used to run ui_beep() and find out how many times I needed to repeat the default beep so that it could be heard well:
          FOR x = 1 to 10; ui_beep(-1); NEXT x

          I even use this trick alot when building long messages using ui_msg_box(). Somehow the text never seems look the same in the real message box as I thought it would. (It appears correctly but it just doesn't "look right" to me.)