Membuat Login dengan asp.net

1. pada webconfig

<connectionStrings>

<add connectionString=”Data Source=  ;Initial Catalog= ;User= ;Password= ” providerName=”System.Data.SqlClient”/>

</connectionStrings>

isi sesuai dengan datasourcenya

2. add new item (klik kanan – add new item – pilih web form lalu ketik name : login.asp)

membuat table login pada login.aspx tambahkan :

<asp:Label ID=”Label1″ runat=”server” Text=””></asp:Label>

<table>

 <tr>

<td>Username</td>

<td>

<asp:TextBox ID=”txtuser” runat=”server”></asp:TextBox></td>

</tr>

<tr>

<td>Password</td>

<td>

<asp:TextBox ID=”txtpass” TextMode=”Password” runat=”server”></asp:TextBox></td>

</tr>

<tr>

<td></td>

<td>

<asp:Button ID=”Button1″ runat=”server” Text=”Ok” onclick=”Button1_Click” />

<asp:Button ID=”Button2″ runat=”server” Text=”Cancel” />

</td>

</tr>

</table>

isikan source codenya pada login.aspx.cs :

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data.SqlClient;

using System.IO;

using System.Configuration;

using System.Web.Security;

using System.Data;

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

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

SqlConnection coninv = new SqlConnection(ConfigurationManager.ConnectionStrings[“coninv”].ConnectionString);

try

{

coninv.Open();

SqlCommand cmd = new SqlCommand(“select * from tb_user where nik='” + txtuser.Text + “‘ and user_pass='” + txtpass.Text + “‘ and status=’0′”, coninv);

SqlDataReader rdr = cmd.ExecuteReader();

if (rdr.Read())

{

 

FormsAuthenticationTicket authTicket =

new FormsAuthenticationTicket(1, // version

txtuser.Text + “-” + rdr[“username”] + “-” + rdr[“user_priv”] + “-” + rdr[“id_user”] + “-” + rdr[“region”],

DateTime.Now,

DateTime.Now.AddMinutes(Session.Timeout), false, txtpass.Text); 

string encryptedTicket = FormsAuthentication.Encrypt(authTicket);

 

HttpCookie authCookie =

new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);

 

Response.Cookies.Add(authCookie);

Response.Redirect(FormsAuthentication.GetRedirectUrl(txtuser.Text, false));

}

else

{

Label1.Text = “username tdk dapat mengakses”;

}

}

catch (Exception ex)

{

if (coninv.State == ConnectionState.Open)

{

Label1.Text = ex.Message;

coninv.Close();

}

}

}

}

3. tambahkan item dengan nama home.asp

 home.aspx

<asp:Label ID=”Label1″ runat=”server” Text=””></asp:Label>

<asp:LinkButton ID=”LinkButton1″ runat=”server” OnClick=”log”>Logout</asp:LinkButton>

home.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using System.Data.SqlClient;

using System.IO;

using System.Configuration;

using System.Web.Security;

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

{

protected void Page_Load(object sender, EventArgs e)

{

Label1.Text = “sukses”;

}

protected void log(object sender, EventArgs e)

{

Response.Redirect(“logout.aspx”);

}

4. tambahkan item dengan nama : Logout.aspx

pada logout.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using System.Data.SqlClient;

using System.IO;

using System.Configuration;

using System.Web.Security;

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

{

protected void Page_Load(object sender, EventArgs e)

{

Session.Abandon();

FormsAuthentication.SignOut();

Response.Redirect(“login.aspx”); 

}

}

5. Pada webconfig.aspx tambahkan

<authentication mode=”Forms”>

<forms defaultUrl=”default.aspx” loginUrl=”login.aspx” name=”apaaja” protection=”All”></forms>

</authentication>

<authorization>

<deny users=”?”/>

<allow users=”*”/>

</authorization>

6. Pada default.aspx tambahkan

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

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

{

protected void Page_Load(object sender, EventArgs e)

{

Response.Redirect(“home.aspx”);

}

}