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Or, all in one expression:<br />

<pre><code id="code-8198009">Dim bGoodPassword As Boolean = Regex.IsMatch(txtPassword.Text, &quot;^(?=.*[A-Z])(?=.*\\d)(?=.*[.!@#$%^&amp;*])&quot;)</code></pre>
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Or, all in one expression:


Dim bGoodPassword As Boolean = Regex.IsMatch(txtPassword.Text, "^(?=.*[A-Z])(?=.*\\d)(?=.*[.!@#$%^&*])")

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In my first post, I think you need to escape the backslash:<br />
&nbsp;Dim bNumeric As Boolean = Regex.IsMatch(txtPassword.<wbr />Text, &quot;\\d&quot;)
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In my first post, I think you need to escape the backslash:
 Dim bNumeric As Boolean = Regex.IsMatch(txtPassword.Text, "\\d")

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you can use this control:<br />
<br />
<a href="http://www.asp.net/ajax/ajaxcontroltoolkit/samples/passwordstrength/passwordstrength.aspx" rel="ugc">http://www.asp.net/ajax/ajaxcontroltoolkit/samples/passwordstrength/passwordstrength.aspx</a>
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you can use this control:

http://www.asp.net/ajax/ajaxcontroltoolkit/samples/passwordstrength/passwordstrength.aspx [http://www.asp.net/ajax/ajaxcontroltoolkit/samples/passwordstrength/passwordstrength.aspx]

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@TerryAtOpus<br />

<blockquote>
In my first post, I think you need to escape the backslash:
</blockquote>
Not in VB &nbsp;; )
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@TerryAtOpus


> In my first post, I think you need to escape the backslash:

Not in VB  ; )

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<div class="content wysiwyg-content">
I have a password field I need a regular expression to check if my filed has atleast one upper case letter ,atleast &nbsp;one number andat least &nbsp;one special character, tried this which does not work<br />
<br />
&nbsp; &nbsp;Dim bUppercase As Boolean = Regex.IsMatch(txtPassword.<wbr />Text, &quot;^/[A-Z]/*$&quot;)<br />
&nbsp; &nbsp; &nbsp; &nbsp; Dim bNumeric As Boolean = Regex.IsMatch(txtPassword.<wbr />Text, &quot;^/[0-9]/*$&quot;)<br />
&nbsp; &nbsp; &nbsp; &nbsp; Dim bSpecial As Boolean = Regex.IsMatch(ItxtPassword<wbr />.Text, &quot;^/[.!@#$%^&amp;*]/*$&quot;)
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I have a password field I need a regular expression to check if my filed has atleast one upper case letter ,atleast  one number andat least  one special character, tried this which does not work

   Dim bUppercase As Boolean = Regex.IsMatch(txtPassword.Text, "^/[A-Z]/*$")
        Dim bNumeric As Boolean = Regex.IsMatch(txtPassword.Text, "^/[0-9]/*$")
        Dim bSpecial As Boolean = Regex.IsMatch(ItxtPassword.Text, "^/[.!@#$%^&*]/*$")

Reqular expression in vb.net to check content of password field

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.

Regular Expressions

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,

Visual Basic.NET

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications