How to use Login Control in Visual Studio 2008

<asp:PasswordRecovery ID="PasswordRecovery1" runat="server" Height="149px" Width="339px"></asp:PasswordRecovery>

4. LoginStatus

If the user is logged in, the logout link is displayed. Otherwise, the login link is shown. In both cases, the link goes to the login page.

For Example:

<asp:LoginStatus ID="LoginStatus1" runat="server" BackColor="Yellow" BorderColor="Black"

Height="64px" Width="188px" />

5. LoginName

The LoginName control displays the currently authenticated users name on the page. It uses the value returned by calling page.user.identity.

If the user is not currently logged in then the control does not render on the page and does not hold any visual space on the page.

The LoginName control supports the standard web control style properties to control its display.

For Example:

<asp:LoginName ID="LoginName1" runat="server" BackColor="Yellow" ForeColor="Black"

Height="58px" Style="z-index: 100; left: 10px; position: absolute; top: 15px"

Width="193px" />

6. ChangePassword

If user wants to change his password then he uses this control. To changing the password the following values need to filling.

User name = sapna

Old password = sapna

New password = (user can use anything that ha want for example abcd)

Retype new password = (type the same new password for example abcd)

For Example:

<asp:ChangePassword ID="ChangePassword1" runat="server" BackColor="Yellow" BorderColor="Black" Height="268px" Width="431px" OnChangedPassword="ChangePassword1_ChangedPassword"></asp:ChangePassword>

7. CreateUserWizard

The CreateUserWizard control is a kind of CompositeControl like the other ASP.NET Membership controls.

Use the following values when filling out the CreateUserWizard form.

User Name = sapna

Password and Confirm Password = sapna

(It doesn't matter what you type for the email and the security question and answer.)

When you click the "continue" button on the "Complete" page, you'll be taken to a page that demonstrates the LoginStatus control.

For Example:

<asp:CreateUserWizard ID="CreateUserWizard1" runat="server" BackColor="#FFFF80" BorderColor="Blue" Height="308px" Width="389px">

<WizardSteps>

<asp:CreateUserWizardStep runat="server">

</asp:CreateUserWizardStep>

<asp:CompleteWizardStep runat="server">

</asp:CompleteWizardStep>

</WizardSteps>

</asp:CreateUserWizard>

Figure 2. All the controls of Login Tab

Drag and drop the login control on the page then the control will look like a login page at design time.

Figure 3. Login control at design time

ASPX CODE:-

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="sapna_Login_Control_Login" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title>Login Controls</title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:Login ID="Login1" runat="server" BackColor="#FFE0C0" BorderColor="Red" Height="149px"

CssClass="LoginControl" CreateUserText="Register" Width="339px" HelpPageText="Additional Help"

InstructionText="Please enter your user name and password for login.">

<TitleTextStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />

</asp:Login>

</div>

</form>

</body>

</html>

.CS CODE:-

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class sapna_Login_Control_Login : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!this.IsPostBack)

ViewState["LoginErrors"] = 0;

}

protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)

{

if (YourValidationFunction(Login1.UserName, Login1.Password))

{

e.Authenticated = true;

Login1.TitleText = "Successfully Logged In";

}

else

{

e.Authenticated = false;

}

}

protected void Login1_LoginError(object sender, EventArgs e)

{

if (ViewState["LoginErrors"] == null)

ViewState["LoginErrors"] = 0;

int ErrorCount = (int)ViewState["LoginErrors"] + 1;

ViewState["LoginErrors"] = ErrorCount;

if ((ErrorCount > 3) && (Login1.PasswordRecoveryUrl != string.Empty))

Response.Redirect(Login1.PasswordRecoveryUrl);

}

private bool YourValidationFunction(string UserName, string Password)

{

bool boolReturnValue = false;

string strConnection = "server=MCN-C2B848F240D\\SQLSERVER2005;database=Data;uid=sa;pwd=wintellect;";

SqlConnection sqlConnection = new SqlConnection(strConnection);

String SQLQuery = "SELECT UserName, Password FROM StudentRecord";

SqlCommand command = new SqlCommand(SQLQuery, sqlConnection);

SqlDataReader Dr;

sqlConnection.Open();

Dr = command.ExecuteReader();

while (Dr.Read())

{

if ((UserName == Dr["UserName"].ToString()) & (Password == Dr["Password"].ToString()))

{

boolReturnValue = true;

}

Dr.Close();

return boolReturnValue;

}

return boolReturnValue;

}

}

Login control is having a property called FailureText where you can write your own message.

Figure 4. Custom Error Message

Once you have passed the correct login credential then you will be redirected to the home page using the DestinationPageUrl property. DestinationPageUrl is the property of login control which is used to redirect the user to desination page after a successful login. If incorrect login credential it will show the message like "Your login attempt was not successful. Please try again". This is a custom message specified by the user through the FailureText property.

Figure 5. Login Error

About inbuilt validation:- Login control is having a inbuilt validation feature which is available as a property for programmer. When you will drag-drop the control at design time you will see that the username and password textboxes are marked with star (*) sign which means these fields are required fields.

Figure 6. Validation

If you insert correct usename, password then redirect your page whereever you want or you can show message in ErrorLabel like this:

Successfully Logged in