I am trying to validate a texbox to allow numbers and letter(s) but not letters alone only e.g. 13492M
I am using C# regular expressions.
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I am trying to validate a texbox to allow numbers and letter(s) but not letters alone only e.g. 13492M
I am using C# regular expressions.
^[A-Za-z]*\d[A-Za-z\d]*$should do it. (Possibly some letters, then a digit, then any more letters or digits.)(Edited to add start/end matches.)