Validate strong password using RegularExpressionValidator in asp.net C#

Case1:-

Validate at least 6 character with characters,numbers,1 upper case letter and special characters password

Source Code:-

<asp:TextBox ID="txtpwd" runat="server" Width="180px"></asp:TextBox>

<asp:RegularExpressionValidator ID="revpwd" runat="server" ErrorMessage="Choose at least 6 character with characters,numbers,1 upper case letter and special characters."

ValidationExpression="(?=^.{6,10}$)(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[!@#$%^&*()_+}{":;'?/>.<,])(?!.*\s).*$"

ControlToValidate="txtpwd" ForeColor="Red" Style="font-size: small"

Display="Dynamic"></asp:RegularExpressionValidator>

Out-Put:-

Case2:-

Validate at least one numeric,one alphabet without using special character password

Source Code:-

<asp:TextBox ID="txtpwd" runat="server" Width="180px"></asp:TextBox>

<asp:RegularExpressionValidator ID="revpwd" runat="server" ErrorMessage="Choose at least 6 character,one numeric,one alphabet without special charachter "

ValidationExpression="(?!^[0-9]*$)(?!^[a-zA-Z]*$)^([a-zA-Z0-9]{6,10})$"

ControlToValidate="txtpwd" ForeColor="Red" Style="font-size: small"

Display="Dynamic"></asp:RegularExpressionValidator>

Out-put

Case3:-

Validate at least one numeric,one alphabet and one special character password

Source Code:-

<asp:TextBox ID="txtpwd" runat="server" Width="180px"></asp:TextBox>

<asp:RegularExpressionValidator ID="revpwd" runat="server" ErrorMessage="Choose at least 6 character,one numeric,one alphabet and one special character."ValidationExpression="(?=^.{6,10}$)(?=.*\d)(?=.*[a-zA-Z])(?=.*[!@#$%^&*()_+}{":;'?/>.<,])(?!.*\s).*$"