Login Only Allow 3 Attempt And Lock The Controls Using JavaScripts in Asp.net C#

02:38:00  , ,  1 comment

Login Only Allow 3 Attempt 

 If  User Use Login Control  Three Attempts Failures  After That Lock The Login All Control Using In Asp.Net C#.

                                        DEMO
                                 


                    HTML CODING
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>

    <script type="text/javascript">

      

        var Time = 60, check = null;
        function Assigninterval() {
            // One Second Set
            check = setInterval(starttimer, 1000);
        }


        function  starttimer() {
          
            Time -= 1;
            var Element = document.getElementById("Text11");
            Element.style.color = "red";
            document.getElementById("Style11").innerHTML = "Your Time Left: " + Time;

            if (Time <= 0) {
              
                clearInterval(check);
                check = null;
                Time = 0;

                document.getElementById("Style11").innerHTML = '';
                document.getElementById("txtLoginCount").readOnly = false;
                document.getElementById("txtUsername").readOnly = false;
                document.getElementById("txtPassword").readOnly = false;
              
       document.getElementById('<%= Login1.ClientID %>').disabled = false;
            }
            else {

                document.getElementById("txtLoginCount").readOnly = true;
                document.getElementById("txtUsername").readOnly = true;
                document.getElementById("txtPassword").readOnly = true;
              
       document.getElementById('<%= Login1.ClientID %>').disabled = true;
            }
          
        }
            
             

</script>
          

</head>
<body>
    <form id="form1" runat="server">
        <div id="Text11">
         <p id="Style11" style="font:bold 24px caption"></p>
</div>
    <div id ="loc">
   
        <table><tr><td>
            <asp:Label ID="Label1" runat="server" Text="Login Count"></asp:Label>
            </td><td>
        <asp:TextBox ID="txtLoginCount" runat="server">0</asp:TextBox>
            </td></tr>
            <tr><td>
                <asp:Label ID="Label2" runat="server" Text="Username"></asp:Label>
                </td><td>
        <asp:TextBox ID="txtUsername" runat="server"></asp:TextBox>
                </td></tr>
            <tr><td>
                <asp:Label ID="Label3" runat="server" Text="Password"></asp:Label>
                </td><td>
        <asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
                </td></tr>
            <tr><td></td><td>
        <asp:Button ID="Login1" runat="server" OnClick="LoginButton_Click1" Text="Login" Height="26px" Width="76px"  />
                </td></tr>

        </table>
   
          
    </div>

    </form>     


</body>
</html>


                            
                      C# CODING


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
      
    }    
   
  
    protected void LoginButton_Click1(object sender, EventArgs e)
    {
        if (txtUsername.Text == "A" && txtUsername.Text == "A")
        {
            Response.Write("OK");
        }
        else
        {
            int count = 1;


            txtLoginCount.Text = (count + Convert.ToInt32(txtLoginCount.Text)).ToString();


            if (Convert.ToInt32(txtLoginCount.Text) > 3)

            {

              
           System.Web.UI.ScriptManager.RegisterClientScriptBlock(Page, typeof(Page), "Script", "Assigninterval();", true);

             
                txtLoginCount.Text = "0";
                               
            }

            else

            {

                Response.Write(" Invalid Username or Password");
            }                                  
        }
    }
}




First - Add The New Web Form - Select The  TextBoxes & Buttons - Login Count TextBox Text=0





Next - Login Button Select - Write Below Coding







Next - Set The Intervel Time  - If Start Timer Lock The Button & TextBoxes







If  Timer TimeOut  Enable The All Textboxes & Buttons







Next - Run[F5] The Program - Starting  Count = 0 When count =4 Timer Will Start Controls Lock

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