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Editorial Team
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Asked: 2026-06-18T00:06:52+00:00

I need a regular expression to validate whether text entered in an asp.net textbox

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I need a regular expression to validate whether text entered in an asp.net textbox has the following format

A-za-z123456789  /s = /s  A-za-z123456789

Regular expression explained:

  • one or more alphanumeric characters
  • followed by any number of spaces
  • an equal sign
  • followed by any number of spaces
  • one or more alphanumeric characters
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1 Answer

  1. Editorial Team

    If zero valid

    "^[a-zA-Z\\d]+\\s*=\\s*[a-zA-Z\\d]+$"

    If zero not valid

    "^[a-zA-Z1-9]+\\s*=\\s*[a-zA-Z1-9]+$"
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