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how i can validate password length in
and also compare password nd confirm password..
Updated 10-Sep-17 22:50pm

Have a look:
How to Use the ASP.NET Validation Control to Validate the User Input[^]

Try this code:
public bool IsPasswordsEqual(string password1, string password2)
	if (password1.Equals(password2))
		return true;
	return false;

use this method on submit button click event or confirmpassword textbox leave event
   MessageBox.Show("Enter same password in both");

Refer: Compare password[^]
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__TR__ 5-Sep-12 5:59am    
Prasad_Kulkarni 5-Sep-12 6:04am    
Thank you TR!
<asp:Label ID="lbl_password" runat="server" CssClass="Label" Text="Password"></asp:Label>
            <div class="cleaner">
            <asp:TextBox ID="radtxtPassword" runat="server" TextMode="Password" CssClass="textbox" ValidationGroup="RegisterCheck">
            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="radtxtPassword"
                ValidationGroup="RegisterCheck" ></asp:RequiredFieldValidator>

            <asp:RegularExpressionValidator ID="valPassword" runat="server" ControlToValidate="radtxtPassword"
                ErrorMessage="Minimum password length is 6" ValidationExpression="^([a-zA-Z0-9@#$%^&+=*]{6,30})$"
                ValidationGroup="RegisterCheck" />
            <div class="cleaner_h10">
            <asp:Label ID="lbl_ConfirmPassword" runat="server" CssClass="Label" Text="Confirm Password"></asp:Label>
            <div class="cleaner">
            <asp:TextBox ID="radtxtConfirmPassword" runat="server" TextMode="Password" CssClass="textbox"

            <asp:CompareValidator ID="cmpvldPassword" runat="server" ControlToCompare="radtxtConfirmPassword"
                ControlToValidate="radtxtPassword" Type="String" Operator="Equal" ValidationGroup="RegisterCheck"
                ErrorMessage="Password should match"></asp:CompareValidator>

<asp:Button ID="btnCreateuser" runat="server" CssClass="complete_btn" ValidationGroup="RegisterCheck"
                BorderStyle="None" OnClick="btnCreateuser_Click" CausesValidation="true" />
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Your question is quite ambigious since you did not mention if you're using Web Forms or MVC. Nevertheless, you can use client-side validation in javascript with RegEx.test method since it can be used in both Web Forms and MVC.

var hasError = false;
var password = $('#password').val();
if (password.length > 0) {
    var passwordTest = new RegExp('^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[~`!@#\$%\^&\*,.])(?=.{8,})');
    if (!passwordTest.test(password)) {
        hasError = true;

RegEx Description:
^	            The password string will start this way
(?=.*[a-z])	    The string must contain at least 1 lowercase alphabetical character
(?=.*[A-Z])	    The string must contain at least 1 uppercase alphabetical character
(?=.*[0-9])	    The string must contain at least 1 numeric character
(?=.*[!@#\$%])	The string must contain at least one special character
(?=.{8,})	    The string must be eight characters or longer
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Kats2512 11-Sep-17 5:50am    
just 5 years too late.
Cristian Mayo 11-Sep-17 6:01am    
yeah, I noticed the post date late.. haha
Kats2512 11-Sep-17 6:04am    
next time just check, your account could get reported and your answer marked as spam.
Cristian Mayo 11-Sep-17 6:05am    
Noted. I joined just today and the question is still active. I appreciate you warning though.

Thanks. ^_^

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