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Editorial Team
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Asked: 2026-05-28T15:36:05+00:00

When I try to use a masked textbox in my project, I saw that

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When I try to use a masked textbox in my project, I saw that 00000 and 99999 give the same result of _____ in my masked textbox.

Is 0 and 9 is the same in a mask of my masked textbox? If any difference: what are all that?

Please explain.

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1 Answer

  1. Editorial Team

    Take a look at the documentation of the Mask property:

    Masking element     Description
---------------     -----------
0                   Digit, required.This element will accept any single digit between 0 and 9.
9                   Digit or space, optional.

    They’re not the same, but every piece of the mask that is not a literal character to be included (like date or time separators or the dots in an IP address) will become an underscore to indicate that they are a place to enter stuff.

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