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Login and registration process in WPF application

Posted by Purushottam Rathore Articles | WPF September 15, 2010
In this article, I am creating a simple application for login and registration using WPF in visual studio 2010.
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Introduction:

In this article I am creating a simple application for login and registration using WPF in visual studio 2010. In this application I am creating two window forms one is for Registration and another is for login. First of all user will register after then he/she can login.

 

Now I am going to discuss in brief about this application.

 

Step1: Open Visual Studio 2010 -> File -> New -> Project.


New project template will display and select WPF Application like as follows:

NewProject1.png

Figure 1:

Step 2: Enter your project name and click on OK button.

 

Step 3: You will get the MainWindow.xaml window form, if you want to change then rename it and also change the StartupUri property of application into App.xaml like as follows:

 

App.xaml:

<Application x:Class="Login_WPF.App"

             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

             StartupUri="Registration.xaml">

    <Application.Resources></Application.Resources>

</Application>

 

Step 4: Now design your Registration page as figure 2 or copy and page following inline code.

 

Registration.xaml:

<Window x:Class="Login_WPF.Registration"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="Registration" Height="387" Width="528" Background="Black">

    <Grid  Height="350" Width="525" Background="Bisque">

        <TextBlock Height="23" HorizontalAlignment="Left" Margin="10,5,0,0" Name="textBlockHeading" Text="Registration:" VerticalAlignment="Top" Width="110"  FontSize="17" FontStretch="ExtraCondensed"/>

        <!--Button as a Link button using style-->

        <Button Margin="451,5,12,288" Content="Login" Cursor="Hand" Click="Login_Click">

            <Button.Template>

                <ControlTemplate TargetType="Button">

                    <TextBlock TextDecorations="Underline">

                    <ContentPresenter />

                    </TextBlock>

                </ControlTemplate>

            </Button.Template>

            <Button.Style>

                <Style TargetType="Button">

                    <Setter Property="Foreground" Value="Navy" />

                    <Style.Triggers>

                        <Trigger Property="IsMouseOver" Value="true">

                            <Setter Property="Foreground" Value="Red" />

                        </Trigger>

                    </Style.Triggers>

                </Style>

            </Button.Style>

        </Button>

        <!--end Button as a Link button using style-->

        <Grid Margin="31,0,29,23" Background="White" Height="264" VerticalAlignment="Bottom">

            <Grid.RowDefinitions>

                <RowDefinition Height="252*" />

                <!--   <RowDefinition Height="12*" />-->

            </Grid.RowDefinitions>

            <TextBlock Height="20" HorizontalAlignment="Left" Margin="67,0,0,0" x:Name ="errormessage" VerticalAlignment="Top" Width="247"  OpacityMask="Crimson" Foreground="#FFE5572C" />

            <TextBlock Height="23" HorizontalAlignment="Left" Margin="67,20,0,0" Name="textBlockFirstname" Text="First Name:" VerticalAlignment="Top" Width="110" />

            <TextBlock Height="23" HorizontalAlignment="Left" Margin="67,50,0,0" Name="textBlockLastName" Text="Last Name:" VerticalAlignment="Top" Width="110" />

            <TextBlock Height="23" HorizontalAlignment="Left" Margin="67,80,0,0" Name="textBlockEmailId" Text="EmailId" VerticalAlignment="Top" Width="110" />

            <TextBlock Height="23" HorizontalAlignment="Left" Margin="67,107,0,0" Name="textBlockPassword" Text="Password:" VerticalAlignment="Top" Width="110"  />

            <TextBlock Height="23" HorizontalAlignment="Left" Margin="67,136,0,0" Name="textBlockConfirmPwd" Text="ConfirmPassword:" VerticalAlignment="Top" Width="110" Grid.RowSpan="2" />

            <TextBlock Height="23" HorizontalAlignment="Left" Margin="67,166,0,0" Name="textBlockAddress" Text="Address" VerticalAlignment="Top" Width="110" />

 

            <TextBox Height="23" HorizontalAlignment="Left" Margin="183,20,0,0" Name="textBoxFirstName" VerticalAlignment="Top" Width="222" />

            <TextBox Height="23" HorizontalAlignment="Left" Margin="183,50,0,0" Name="textBoxLastName" VerticalAlignment="Top" Width="222" />

            <TextBox Height="23" HorizontalAlignment="Left" Margin="183,80,0,0" Name="textBoxEmail" VerticalAlignment="Top" Width="222" />

 

            <PasswordBox Height="23" HorizontalAlignment="Left" Margin="183,107,0,0" Name="passwordBox1" VerticalAlignment="Top" Width="222" />

            <!--For password-->

            <PasswordBox Height="23" HorizontalAlignment="Left" Margin="183,136,0,0" Name="passwordBoxConfirm" VerticalAlignment="Top" Width="222" />

            <TextBox Height="23" HorizontalAlignment="Left" Margin="183,0,0,66" Name="textBoxAddress" VerticalAlignment="Bottom" Width="222" />

            <Button Content="Submit" Height="23" HorizontalAlignment="Left" Margin="183,204,0,0" Name="Submit" VerticalAlignment="Top" Width="70" Click="Submit_Click" />

            <Button Content="Reset" Height="23" HorizontalAlignment="Left" Margin="259,204,0,0" Name="button2" VerticalAlignment="Top" Width="70" Click="button2_Click" />

            <Button Content="Cancel" Height="23" HorizontalAlignment="Right" Margin="0,204,60,0" Name="button3" VerticalAlignment="Top" Width="70" Click="button3_Click" />

        </Grid>

    </Grid>

</Window>

registration.png

Figure 2: Registration form

 

Registration.xaml.cs:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Shapes;

using System.Data;

using System.Data.SqlClient;

using System.Text.RegularExpressions;

 

namespace Login_WPF

{

    /// <summary>

    /// Interaction logic for Registration.xaml

    /// </summary>

    public partial class Registration : Window

    {

        public Registration()

        {

            InitializeComponent();

        }

 

        private void Login_Click(object sender, RoutedEventArgs e)

        {

            Login login = new Login();

            login.Show();

            Close();

        }

 

        private void button2_Click(object sender, RoutedEventArgs e)

        {

            Reset();

        }

 

        public void Reset()

        {

            textBoxFirstName.Text = "";

            textBoxLastName.Text = "";

            textBoxEmail.Text = "";

            textBoxAddress.Text = "";

            passwordBox1.Password = "";

            passwordBoxConfirm.Password = "";

        }

        private void button3_Click(object sender, RoutedEventArgs e)

        {

            Close();

        }

 

        private void Submit_Click(object sender, RoutedEventArgs e)

        {

            if (textBoxEmail.Text.Length == 0)

            {

                errormessage.Text = "Enter an email.";

                textBoxEmail.Focus();

            }

            else if (!Regex.IsMatch(textBoxEmail.Text, @"^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$"))

            {

                errormessage.Text = "Enter a valid email.";

                textBoxEmail.Select(0, textBoxEmail.Text.Length);

                textBoxEmail.Focus();

            }

            else

            {

                string firstname = textBoxFirstName.Text;

                string lastname = textBoxLastName.Text;

                string email = textBoxEmail.Text;

                string password = passwordBox1.Password;

                if (passwordBox1.Password.Length == 0)

                {

                    errormessage.Text = "Enter password.";

                    passwordBox1.Focus();

                }

                else if (passwordBoxConfirm.Password.Length == 0)

                {

                    errormessage.Text = "Enter Confirm password.";

                    passwordBoxConfirm.Focus();

                }

                else if (passwordBox1.Password != passwordBoxConfirm.Password)

                {

                    errormessage.Text = "Confirm password must be same as password.";

                    passwordBoxConfirm.Focus();

                }

                else

                {

                    errormessage.Text = "";

                    string address = textBoxAddress.Text;

                    SqlConnection con = new SqlConnection("Data Source=TESTPURU;Initial Catalog=Data;User ID=sa;Password=wintellect");

                    con.Open();

                    SqlCommand cmd = new SqlCommand("Insert into Registration (FirstName,LastName,Email,Password,Address) values('" + firstname + "','" + lastname + "','" + email + "','" + password + "','" + address + "')", con);

                    cmd.CommandType = CommandType.Text;

                    cmd.ExecuteNonQuery();

                    con.Close();

                    errormessage.Text = "You have Registered successfully.";

                    Reset();

                }

            }

        }

    }

}

 

Now I am taking another form for login as follows:

Login.xaml:

<Window x:Class="Login_WPF.Login"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="Login" Height="350" Width="525">

    <Grid>

        <TextBlock Height="23" HorizontalAlignment="Left" Margin="10,10,0,0" Name="LoginHeading" Text="Login:" VerticalAlignment="Top" FontSize="17" FontStretch="ExtraCondensed"/>

        <TextBlock Height="50" HorizontalAlignment="Left" Margin="24,48,0,0" Name="textBlockHeading" VerticalAlignment="Top" FontSize="12" FontStyle="Italic" Padding="5">

            Note: Please login here to view the features of this site. If you are new on this site then <LineBreak /><!--line break-->

            please click on

           <!--textblock as a Hyperlink.-->

            <TextBlock>

                 <Hyperlink Click="buttonRegister_Click" FontSize="14" FontStyle="Normal">Register</Hyperlink>

            </TextBlock>

            <!--end textblock as a hyperlink-->

            button

        </TextBlock>

 

        <TextBlock Height="23" HorizontalAlignment="Left" Margin="66,120,0,0" Name="textBlock1" Text="Email" VerticalAlignment="Top" Width="67" />

        <TextBlock Height="23" HorizontalAlignment="Left" Margin="58,168,0,0" Name="textBlock2" Text="Password" VerticalAlignment="Top" Width="77" />

        <TextBox Height="23" HorizontalAlignment="Left" Margin="118,115,0,0" Name="textBoxEmail" VerticalAlignment="Top" Width="247" />

        <PasswordBox Height="23" HorizontalAlignment="Left" Margin="118,168,0,0" Name="passwordBox1" VerticalAlignment="Top" Width="247" />

        <Button Content="Login" Height="23" HorizontalAlignment="Left" Margin="118,211,0,0" Name="button1" VerticalAlignment="Top" Width="104" Click="button1_Click" />

        <TextBlock Height="23" HorizontalAlignment="Left" x:Name ="errormessage" VerticalAlignment="Top" Width="247" Margin="118,253,0,0"  OpacityMask="Crimson" Foreground="#FFE5572C"  />

    </Grid>

</Window> 

 

login.png
 

Figure 3: Login form.

 

Login.xaml.cs:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using System.Data;

using System.Data.SqlClient;

using System.Text.RegularExpressions;

 

namespace Login_WPF

{

    /// <summary>

    /// Interaction logic for MainWindow.xaml

    /// </summary> 

 

    public partial class Login : Window

    {

        public Login()

        {

            InitializeComponent();

        }

        Registration registration = new Registration();

        Welcome welcome = new Welcome();

 

        private void button1_Click(object sender, RoutedEventArgs e)

        {

            if (textBoxEmail.Text.Length == 0)

            {

                errormessage.Text = "Enter an email.";

                textBoxEmail.Focus();

            }

            else if (!Regex.IsMatch(textBoxEmail.Text, @"^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$"))

            {

                errormessage.Text = "Enter a valid email.";

                textBoxEmail.Select(0, textBoxEmail.Text.Length);

                textBoxEmail.Focus();

            }

            else

            {

                string email = textBoxEmail.Text;

                string password = passwordBox1.Password;

                SqlConnection con = new SqlConnection("Data Source=TESTPURU;Initial Catalog=Data;User ID=sa;Password=wintellect");

                con.Open();

                SqlCommand cmd = new SqlCommand("Select * from Registration where Email='" + email + "'  and password='" + password + "'", con);

                cmd.CommandType = CommandType.Text;

                SqlDataAdapter adapter = new SqlDataAdapter();

                adapter.SelectCommand = cmd;

                DataSet dataSet = new DataSet();

                adapter.Fill(dataSet);

                if (dataSet.Tables[0].Rows.Count > 0)

                {

                    string username = dataSet.Tables[0].Rows[0]["FirstName"].ToString() + " " + dataSet.Tables[0].Rows[0]["LastName"].ToString();

                    welcome.TextBlockName.Text = username;//Sending value from one form to another form.

                    welcome.Show();

                    Close();

                }

                else

                {

                    errormessage.Text = "Sorry! Please enter existing emailid/password.";

                }

                con.Close();

            }

        }

 

        private void buttonRegister_Click(object sender, RoutedEventArgs e)

        {

            registration.Show();

            Close();

        }

 

    }

}

Welcome.xaml:


<Window x:Class="Login_WPF.Welcome"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="Welcome" Height="250" Width="400">

    <Grid>

        <TextBlock Height="23" HorizontalAlignment="Left" Margin="10,10,0,0" x:Name="WelcomeHeading" Text="Welcome:" VerticalAlignment="Top" FontSize="17" FontStretch="ExtraCondensed"/>

        <TextBlock Height="23" HorizontalAlignment="Left" Margin="90,10,0,0" x:Name="TextBlockName"  VerticalAlignment="Top" FontSize="15" FontStretch="ExtraCondensed" />

    </Grid>

</Window>

 

At last if user login successfully then welcome message will display on another form as shown below:

 

welcome.png
 

Figure 4:

Article Extensions
Contents added by nguyen anh on Jun 04, 2013
 nice you!
Contents added by KiranS subramanian on Dec 26, 2012
sir should create database table
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