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Because the <b>^</b> says the string must have nothing before the quotes,<br />
and the <b>$</b> says the string must have nothing after the quotes.<br />
<br />
The <b>*</b> also says that the string can have zero quotes.
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Because the ^ says the string must have nothing before the quotes,
and the $ says the string must have nothing after the quotes.

The * also says that the string can have zero quotes.

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so whats the test expression look like if i want to find out if the string contains single and/or double quotes?
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so whats the test expression look like if i want to find out if the string contains single and/or double quotes?

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<div class="content wysiwyg-content">
m_strRegEx = &quot;^['&quot;]*$&quot;<br />
<br />
' the double quote is detected<br />
?Regex.IsMatch(chr(34), m_strRegEx)<br />
<br />
' the double quote is not detected when other characters are assigned to the string<br />
?Regex.IsMatch(&quot;a&quot; &amp;&nbsp;chr(34), m_strRegEx)<br />
<br />
same problem with single quotes<br />
why?
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m_strRegEx = "^['"]*$"

' the double quote is detected
?Regex.IsMatch(chr(34), m_strRegEx)

' the double quote is not detected when other characters are assigned to the string
?Regex.IsMatch("a" & chr(34), m_strRegEx)

same problem with single quotes
why?

vb.net regex with single and double quotes not working

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Visual Basic.NET

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