In this article I am going to explain how to validate a user for entering strong password.
Validation Expression
Note
Validation Expression
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ValidationExpression="^(?=.*[A-Za-z])(?=.*\d)(?=.*[$@$!%*#?&])[A-Za-z\d$@$!%*#?&]{8,16}$"
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Note
- Must have at least a minimum of (8 characters) and not more than a maximum of (16 characters) as the length.
- Must have 1 numeric digits.
- Must have 1 alphabet and 1 Special characters like {! @ # $ % ^ & *}
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<asp:TextBox
ID="txtpassword"
TextMode="Password"
runat="server"
></asp:TextBox>
<span
style="color:
#ff0033; width:
auto;">*</span>
<asp:RequiredFieldValidator
ID="rfvtxtpassword"
ValidationGroup="S"
ControlToValidate="txtpassword"
runat="server"
ErrorMessage="Please
Enter User Name"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator
ID="Regtxtpassword"
runat="server"
ValidationGroup="S"
Display="None"
ErrorMessage="Password
Message" ControlToValidate="txtpassword"
ValidationExpression="^(?=.*[A-Za-z])(?=.*\d)(?=.*[$@$!%*#?&])[A-Za-z\d$@$!%*#?&]{8,16}$"></asp:RegularExpressionValidator>
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for
RegularExpressionValidator
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