Regular expression validator in asp.net

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Hi everybody,

I am developing a new website using asp.net .

in change password screen , the new password field must contain atleast one numeric,alphabet(one caps,one small),special character. I need regex string for it will you please anyone help me to solve this.

Regards ,
Velsamy

Posted 9-Jul-14 20:58pm

avelsamy

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chauhanvatsal · Accepted Answer · 2014-07-09T21:14:00

XML

<asp:TextBox ID="txtpass" runat="server"></asp:TextBox><br />
<asp:RegularExpressionValidator ID="Regex5" runat="server" ControlToValidate="txtpass"
    ValidationExpression="^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$!%*?&])[A-Za-z\d$@$!%*?&]{8,10}"
    ErrorMessage="Password must contain: Minimum 8 and Maximum 10 characters atleast 1 UpperCase Alphabet, 1 LowerCase Alphabet, 1 Number and 1 Special Character"
ForeColor="Red" />

for example:PaSs@123

Dhrisya P Nair · Accepted Answer · 2014-07-09T21:56:00

Try this....

<asp:textbox id="txtPassword" runat="server" />

<asp:regularexpressionvalidator id="Regex4" runat="server" controltovalidate="txtPassword"
ValidationExpression="^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$!%*?&])[A-Za-z\d$@$!%*?&]{8,}"
ErrorMessage="Password must contain: Minimum 8 characters atleast 1 UpperCase Alphabet, 1 LowerCase Alphabet, 1 Number and 1 Special Character" ForeColor="Red"/>

Regular expression validator in asp.net

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