How to Compare Password and confirm password using Javascript in Asp.net | ASPMANTRA | Asp.Net,MVC,AngularJs,Jquery,Javascript,Sql Server AND WCF snippets and tutorial

How to Compare Password and confirm password using Javascript in Asp.net

Introduction: In this post I will explain how we can validate and compare the password and confirm Password in Asp.net using Javascript.
Description:
I have created a table Employee_Detail. Here ID is primary key.
ID
int
PASSWORD
varchar(50)

Add a new webform to project. Add the below mention to .aspx page.

<table border="1px solid"><tr><td>
    <b>Compare Password and Confirm Password Using Javascript in Asp.net</b>
    </td></tr><tr><td>       
    <table>
    <tr>
    <td>Password:</td><td>
        <asp:TextBox ID="txtpassword" runat="server" placeholder="Enter Password" TextMode="Password"></asp:TextBox></td>
    </tr>
    <tr><td>Confirm Password:</td><td>
        <asp:TextBox ID="txtconfirmpassword" runat="server" placeholder="ReEnter Password" TextMode="Password"></asp:TextBox></td></tr>
        <tr><td>&nbsp;</td><td>
            <asp:Button ID="btncheck" runat="server" Text="Check"
                OnClientClick="return compare();" onclick="btncheck_Click"/></td></tr>
    </table>
    </td></tr></table>


Put the below mention Javascript between Head tag (before the close of Head Tag).

<script language="javascript" type="text/javascript">
       function compare() {
        var pass = document.getElementById("txtpassword");
        var confirmpass = document.getElementById("txtconfirmpassword");
        var Password = document.getElementById('<%=txtpassword.ClientID %>').value;
        var valid = pass.value == confirmpass.value;
        if (Password == "") {
            alert("Please Enter Password");
            return false;
        }
        if (!valid) {
            alert("Password do not match");
            return false;
        }
       
        else {
           
            return true;
        }
            }
</script>
Note: Don’t forget to add connection in web.config file.
Now go to .aspx.cs page and write the below mention code:

using System.Data.SqlClient;
using System.Data;
using System.Configuration;

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["con"].ToString());
    protected void Page_Load(object sender, EventArgs e)
    {
        btncheck.Attributes.Add("onclick", "return compare");
    }
    protected void btncheck_Click(object sender, EventArgs e)
    {
        try
        {
            SqlCommand cmd = new SqlCommand("insert into LINQ_TABLE(PASSWORD) values (@PASSWORD)", con);
            con.Open();
            cmd.Parameters.AddWithValue("@PASSWORD", txtpassword.Text);
            cmd.ExecuteNonQuery();
            con.Close();
            txtpassword.Text = "";
            txtconfirmpassword.Text = "";
        }
        catch(Exception ex)
        {
           
        }
    }


In VB (.aspx.vb)
Imports System.Data
Imports System.Data.SqlClient
Imports System.Configuration

Dim con As New SqlConnection(ConfigurationManager.ConnectionStrings("con").ToString())

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        btncheck.Attributes.Add("onclick", "return compare")
    End Sub

    Protected Sub btncheck_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btncheck.Click
        Try
            Dim cmd As New SqlCommand("insert into LINQ_TABLE(PASSWORD) values (@PASSWORD)", con)
            con.Open()
            cmd.Parameters.AddWithValue("@PASSWORD", txtpassword.Text)
            cmd.ExecuteNonQuery()
            con.Close()
            txtpassword.Text = ""
            txtconfirmpassword.Text = ""

        Catch ex As Exception
        End Try
    End Sub


Now run the project and check the result.

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