hello every one reply my question ? iam getting error in LDAP using Asp.net...

Question

1.00/5 (1 vote)

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C#

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text;
using System.DirectoryServices;

namespace WebApplication4
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnLogin_Click(object sender, EventArgs e)
        {
            string dominName = string.Empty;
            string adPath = string.Empty;
            string userName = txtLoginID.Text.Trim().ToUpper();
            string strError = string.Empty;
            try
            {
                foreach (string key in ConfigurationSettings.AppSettings.Keys)
                {
                    dominName = key.Contains("DirectoryDomain") ? ConfigurationSettings.AppSettings[key] : dominName;
                    adPath = key.Contains("DirectoryPath") ? ConfigurationSettings.AppSettings[key] : adPath;
                    if (!String.IsNullOrEmpty(dominName) && !String.IsNullOrEmpty(adPath))
                    {
                        if (true == AuthenticateUser(dominName, userName, txtPassword.Text, adPath, out strError))
                        {
                            Response.Redirect("default.aspx");// Authenticated user redirects to default.aspx
                        }
                        dominName = string.Empty;
                        adPath = string.Empty;
                        if (String.IsNullOrEmpty(strError)) break;
                    }

                }
                if (!string.IsNullOrEmpty(strError))
                {
                    lblError.Text = "Invalid user name or Password!";
                }
            }
            catch
            {

            }
            finally
            {

            }
        }

        public bool AuthenticateUser(string domain, string username, string password, string LdapPath, out string Errmsg)
        {
            Errmsg = "";
            string domainAndUsername = domain + @"\" + username;
            DirectoryEntry entry = new DirectoryEntry(LdapPath, domainAndUsername, password);
            try
            {
                // Bind to the native AdsObject to force authentication.
                Object obj = entry.NativeObject;
                DirectorySearcher search = new DirectorySearcher(entry);
                search.Filter = "(SAMAccountName=" + username + ")";
                search.PropertiesToLoad.Add("cn");
                SearchResult result = search.FindOne();
                if (null == result)
                {
                    return false;
                }
                // Update the new path to the user in the directory
                LdapPath = result.Path;
                string _filterAttribute = (String)result.Properties["cn"][0];
            }
            catch (Exception ex)
            {
                Errmsg = ex.Message;
                return false;
                throw new Exception("Error authenticating user." + ex.Message);
            }
            return true;
        }

        protected void btnCancel_Click(object sender, EventArgs e)
        {
            txtLoginID.Text = string.Empty;
            txtPassword.Text = string.Empty;
        }
    }
}

source code

XML

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication4._Default" %>

<!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 id="Head1" runat="server">
    <title>LDAP Authentication</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <div>
            <table cellpadding="1" cellspacing="1" style="background-color: #E0E0E0; border: 1px solid #727272">
                <tr>
                    <td>
                        <asp:Label ID="lblName" runat="server" Text="Name"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="txtLoginID" Width="150" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label ID="lblpwd" runat="server" Text="Password"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="txtPassword" Width="150" TextMode="Password" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <asp:Button ID="btnLogin" runat="server" Text="Login" OnClick="btnLogin_Click" />
                        &nbsp;<asp:Button ID="btnCancel" runat="server" Text="Cancel" OnClick="btnCancel_Click" />
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <asp:Label ID="lblError" runat="server" ForeColor="Red" Text=""></asp:Label>
                    </td>
                </tr>
            </table>
        </div>
    </div>
    </form>
</body>
</html>

error is

ASM

Error   12  The type or namespace name 'SearchResult' could not be found (are you missing a using directive or an assembly reference?)  c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 76  17  WebApplication4
Error   1   The type or namespace name 'DirectoryServices' does not exist in the namespace 'System' (are you missing an assembly reference?)    c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 14  14  WebApplication4
Error   10  The type or namespace name 'DirectorySearcher' could not be found (are you missing a using directive or an assembly reference?) c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 73  17  WebApplication4
Error   11  The type or namespace name 'DirectorySearcher' could not be found (are you missing a using directive or an assembly reference?) c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 73  48  WebApplication4
Error   8   The type or namespace name 'DirectoryEntry' could not be found (are you missing a using directive or an assembly reference?)    c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 68  13  WebApplication4
Error   9   The type or namespace name 'DirectoryEntry' could not be found (are you missing a using directive or an assembly reference?)    c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 68  40  WebApplication4
Error   3   The name 'txtPassword' does not exist in the current context    c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 39  75  WebApplication4
Error   14  The name 'txtPassword' does not exist in the current context    c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 97  13  WebApplication4
Error   2   The name 'txtLoginID' does not exist in the current context c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 29  31  WebApplication4
Error   13  The name 'txtLoginID' does not exist in the current context c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 96  13  WebApplication4
Error   4   The name 'lblError' does not exist in the current context   c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 51  21  WebApplication4
Warning 5   'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: '"This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings"'   c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 33  40  WebApplication4
Warning 6   'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: '"This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings"'   c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 35  67  WebApplication4
Warning 7   'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: '"This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings"'   c:\users\srikanth\documents\visual studio 2012\Projects\WebApplication4\WebApplication4\Default.aspx.cs 36  62  WebApplication4

Posted 25-Aug-14 21:15pm

harshavardhan12345678

Updated 25-Aug-14 21:38pm

v4

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harshavardhan12345678 26-Aug-14 3:39am

try in ur pc n reply

1 solution

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harshavardhan12345678 · Answer 1 · 2014-08-25T21:48:00

Solution 1

On the .NET tab in the Add Reference dialog box, click System.DirectoryServices.dll, click Select, and then click OK.

Posted 25-Aug-14 21:48pm

harshavardhan12345678