Create Login Form With SQL Database In ASP.NET Web Forms | ASP.NET

 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="LOGIN.aspx.cs" Inherits="LOGIN_FORM_ASP_PRACTICE.LOGIN" %>


<!DOCTYPE html>


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

<head runat="server">

    <title></title>

    <style type="text/css">

        .auto-style1{

            text-align:center;

            font-size:30px;

        }

        .auto-style2 {

            width: 99px;

        }

        table{

            margin:auto;

            width:300px;

            border:5px black ridge;

        }

    </style>

</head>

<body>

    <form id="form1" runat="server">

        <div>

            <table cellpadding="4" cellspacing="4">

                <tr>

                    <td class="auto-style1" colspan="2">LOGIN</td>

                </tr>

                <tr>

                    <td class="auto-style2">USERNAME</td>

                    <td>

                        <asp:TextBox ID="UsernameTextBox" runat="server" Width="192px"></asp:TextBox>

                        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Please Enter Username" Display="Dynamic" ForeColor="Red" ControlToValidate="UsernameTextBox" SetFocusOnError="true"></asp:RequiredFieldValidator>

                    </td>

                </tr>

                <tr>

                    <td class="auto-style2">PASSWORD</td>

                    <td>

                        <asp:TextBox ID="PasswordTextBox" runat="server" Width="192px" TextMode="Password"></asp:TextBox>

                        <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="Please Enter Password" Display="Dynamic" ForeColor="Red" ControlToValidate="PasswordTextBox" SetFocusOnError="true"></asp:RequiredFieldValidator>

                    </td>

                </tr>

                <tr>

                    <td class="auto-style2">&nbsp;</td>

                    <td>

                        <asp:Button ID="LoginButton" runat="server" Text="LOGIN" OnClick="LoginButton_Click"/>

                    </td>

                </tr>

            </table>

        </div>

    </form>

</body>

</html>

Above File is LOGIN_FORM_ASP_PRACTICE\LOGIN.aspx
















using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data.SqlClient;

namespace LOGIN_FORM_ASP_PRACTICE
{
    public partial class LOGIN : System.Web.UI.Page
    {
        string cs = ConfigurationManager.ConnectionStrings["dbcs2"].ConnectionString;
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void LoginButton_Click(object sender, EventArgs e)
        {
            try
            {
                using(SqlConnection con = new SqlConnection(cs))
                {
                    con.Open();
                    string query = "SELECT * FROM Login WHERE username=@username AND password=@password";
                    SqlCommand cmd = new SqlCommand(query,con);
                    cmd.Parameters.AddWithValue("@username",UsernameTextBox.Text);
                    cmd.Parameters.AddWithValue("@password",PasswordTextBox.Text);
                    SqlDataReader dr = cmd.ExecuteReader();
                    if (dr.HasRows)
                    {
                        Session["user"] = UsernameTextBox.Text;
                        //Page.ClientScript.RegisterStartupScript(this.GetType(), "Scripts", "<script>alert('Login Successful !!')</script>");
                        Response.Redirect("DASHBOARD.aspx");
                    }
                    else
                    {
                        Page.ClientScript.RegisterStartupScript(this.GetType(),"Scripts","<script>alert('Login Failed !!')</script>");
                    }
                }
            }
            catch (Exception ex)
            {
                Response.Write("Exception: " + ex.ToString());
            }
        }
    }
}
Above File is LOGIN_FORM_ASP_PRACTICE\LOGIN.aspx.cs



















<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DASHBOARD.aspx.cs" Inherits="LOGIN_FORM_ASP_PRACTICE.DASHBOARD" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:Button ID="LogoutButton" runat="server" Text="LOGOUT" OnClick="LogoutButton_Click"/>
        </div>
    </form>
</body>
</html>
Above File is LOGIN_FORM_ASP_PRACTICE\DASHBOARD.aspx


















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

namespace LOGIN_FORM_ASP_PRACTICE
{
    public partial class DASHBOARD : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Session["user"] != null)
            {
                Response.Write("Welcome to my site Mr/Mrs " + Session["user"].ToString());
            }
            else
            {
                Response.Redirect("LOGIN.aspx");
            }
        }

        protected void LogoutButton_Click(object sender, EventArgs e)
        {
            if (Session["user"] != null)
            {
                Session["user"] = null;
                Response.Redirect("LOGIN.aspx");
            }
        }
    }
}
Above File is LOGIN_FORM_ASP_PRACTICE\DASHBOARD.aspx

















<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  https://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.7.2" />
    <httpRuntime targetFramework="4.7.2" />
    <pages>
      <namespaces>
        <add namespace="System.Web.Optimization" />
      </namespaces>
      <controls>
        <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt" />
      </controls>
    </pages>
  </system.web>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" />
        <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Web.Infrastructure" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" />
        <bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
    </compilers>
  </system.codedom>
<appSettings>
<add key="ValidationSettings:UnobtrusiveValidationMode" value="None"/>
</appSettings>
<connectionStrings>
<add name="dbcs2" connectionString="Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=D:\DotNet\LOGIN_FORM_ASP_PRACTICE\LOGIN_FORM_ASP_PRACTICE\App_Data\MyDatabase.mdf;Integrated Security=True" providerName="System.Data.SqlClient"/>
</connectionStrings>
</configuration>
Above File is Web.config









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