I need a regex which will allow only A-Z, a-z, 0-9, the _ character, and dot (.) in the input.
I tried:
[A-Za-z0-9_.]
But, it did not work. How can I fix it?
I need a regex which will allow only A-Z, a-z, 0-9, the _ character,
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I need a regex which will allow only A-Z, a-z, 0-9, the _ character, and dot (.) in the input.
I tried:
[A-Za-z0-9_.]
But, it did not work. How can I fix it?
From beginning until the end of the string, match one or more of these characters.
Edit:
Note that
^and$match the beginning and the end of a line. When multiline is enabled, this can mean that one line matches, but not the complete string.Use
\Afor the beginning of the string, and\zfor the end.See for example: http://msdn.microsoft.com/en-us/library/h5181w5w(v=vs.110).aspx