How to create an Admin Panel using ASP.NET (or) Asp.net Admin panel project free download

Admin panel pages differs from the normal web page. 
Admin panels are for managing the entire site whcih consist of following modules

1. Users
2. Contents
3. Permission of various pages.
4. Transactions (If website is performing any transaction)
5. Sending Newsletter ( If website has the provision for users to subscribe news letter).
So basically admin panels are for managing the website. So build/arrange your modules based on your actual website/webapplication.

This is the admin panel of Limited Job website. ( Asp.net C# & SQL2008)

LIST OF PAGES : 
AdminHome.aspx
JobSeekerAppliedJobs.aspx
JobSeekerAppliedJobsDetails.aspx
ListOfPostedJobs.aspx
ListOfRegCandidates.aspx
ModifyRegUsers.aspx
PostedJobsDetails.aspx

// Admin class file added below.

ADMIN HOME : 

AdminDal admdal = new AdminDal();

    protected void Page_Load(object sender, EventArgs e)

    {

        lbl_message.Text = "";

    }

    protected void btn_login_Click(object sender, ImageClickEventArgs e)

    {  

         try

         {

             Session["Admin"] = txt_user.Text;

          

              

            

             if (admdal.AdmLogin(txt_user.Text, txt_pwd.Text) == true)

             {

                 Response.Redirect("AdmHome.aspx");

             }

             else

             {

                 lbl_message.Text = "Invalid UserName/Password";

             }

         }

         catch (Exception)

         {

             throw;

         }

         

    }

=================================================================================

Lis tOf Registered Candidates :

here admin can view the all registered users and admin can activate user or admin can deactivate or delete user.

AdminDal AdmDal = new AdminDal();

    protected void Page_Load(object sender, EventArgs e)

    {

        if (Session["Admin"].ToString() == "")

        {

            Response.Redirect("AdminMain.aspx");

        }

    }

    protected void btnView_Click(object sender, EventArgs e)

    {

        try

        {

            Grd_AdminViewRegUsers.DataSource = AdmDal.AdminShowAllRegisterByDate(Convert.ToDateTime(txt_Fmdate.Text), Convert.ToDateTime(txt_Todate.Text));

            Grd_AdminViewRegUsers.DataBind();

        }

        catch (Exception)

        {

            if (txt_Fmdate.Text == "" && txt_Todate.Text == "")

            {

                Page.RegisterStartupScript("err1", "<script language='javascript'>alert('Please select dates');</script>");

               

            }

           

        }

    }

  

    protected void Grd_AdminViewRegUsers_RowCommand(object sender, GridViewCommandEventArgs e)

    {

        if (e.CommandName == "Delete")

        {

          

            AdmDal.JobSeekerId = e.CommandArgument.ToString();

            AdmDal.DeleteRegisterUserInfo();

            Grd_AdminViewRegUsers.DataSource = AdmDal.AdminShowAllRegisterByDate(Convert.ToDateTime(txt_Fmdate.Text), Convert.ToDateTime(txt_Todate.Text));

            Grd_AdminViewRegUsers.DataBind();

            

        }

        if (e.CommandName == "Update")

        {

            Session["UserEmail"] = e.CommandArgument.ToString();

            Response.Redirect("ModifyRegUsers.aspx");

        }

    }

    protected void Grd_AdminViewRegUsers_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {

        Grd_AdminViewRegUsers.PageIndex = e.NewPageIndex;

        try

        {

            Grd_AdminViewRegUsers.DataSource = AdmDal.AdminShowAllRegisterByDate(Convert.ToDateTime(txt_Fmdate.Text), Convert.ToDateTime(txt_Todate.Text));

            Grd_AdminViewRegUsers.DataBind();

        }

        catch (Exception)

        {

            throw;

        }

    }

================================================================================

JobSeeker Applied Jobs Details

AdminDal AdmDal = new AdminDal();

    protected void Page_Load(object sender, EventArgs e)

    {

        if (Session["Admin"].ToString() == "")

        {

            Response.Redirect("AdminMain.aspx");

        }

        BindGridview();

    }

    private void BindGridview()

    {

        Grd_AdmViewAppliedJobBiddrs.DataSource = AdmDal.AdminJobSeekerAppliedJobDetails();

        Grd_AdmViewAppliedJobBiddrs.DataBind();

    }

    protected void Grd_AdmViewAppliedJobBiddrs_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {

        try

        {

            Grd_AdmViewAppliedJobBiddrs.PageIndex = e.NewPageIndex;

            BindGridview();

        }

        catch (Exception ex)

        {

            lblMsg.Text = ex.Message;

        }

    }

    protected void Grd_AdmViewAppliedJobBiddrs_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)

    {

        try

        {

            Grd_AdmViewAppliedJobBiddrs.SelectedIndex = e.NewSelectedIndex;

            foreach (GridViewRow gr in Grd_AdmViewAppliedJobBiddrs.Rows)

            {

                if (gr.RowIndex == Grd_AdmViewAppliedJobBiddrs.SelectedIndex)

                {

                    Literal l;

                    l = (Literal)gr.FindControl("lblRegEmail");

                    Session["JobSeekerId"] = l.Text;

                    Response.Redirect("JobSeekerAppliedJobsDetails.aspx");

                }

            }

        }

        catch (Exception ex)

        {

            lblMsg.Text = ex.Message;

        }

    }

=================================================================================

List of Posted Jobs: 

                                          

AdminDal AdmDal = new AdminDal();

    protected void Page_Load(object sender, EventArgs e)

    {

        if (Session["Admin"].ToString() == "")

        {

            Response.Redirect("AdminMain.aspx");

        }

    }

    protected void btnView_Click(object sender, EventArgs e)

    {

        try

        {

            Grd_AdminViewAllJobs.DataSource = AdmDal.AdminShowAllJobsByDate(Convert.ToDateTime(txt_Fmdate.Text), Convert.ToDateTime(txt_Todate.Text));

            Grd_AdminViewAllJobs.DataBind();

        }

        catch (Exception)

        {

            if (txt_Fmdate.Text == "" && txt_Todate.Text == "")

            {

                Page.RegisterStartupScript("err1", "<script language='javascript'>alert('Please select dates');</script>");

            }

        }

    }

    protected void Grd_AdminViewAllJobs_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {

        Grd_AdminViewAllJobs.PageIndex = e.NewPageIndex;

        try

        {

            Grd_AdminViewAllJobs.DataSource = AdmDal.AdminShowAllJobsByDate(Convert.ToDateTime(txt_Fmdate.Text), Convert.ToDateTime(txt_Todate.Text));

            Grd_AdminViewAllJobs.DataBind();

        }

        catch (Exception)

        {

            throw;

        }

    }

    protected void Grd_AdminViewAllJobs_RowCommand(object sender, GridViewCommandEventArgs e)

    {

        if (e.CommandName == "Update")

        {

            Session["JobId"] = e.CommandArgument.ToString();

            Response.Redirect("PostedJobsDetails.aspx");

        }

    }

    protected void Grd_AdminViewAllJobs_RowDeleting(object sender, GridViewDeleteEventArgs e)

    {

        Button btn;

        foreach (GridViewRow gr in Grd_AdminViewAllJobs.Rows)

        {

            btn = (Button)gr.FindControl("btndelete");

            AdmDal.JobSeekerId = btn.CommandArgument.ToString();

        }

        AdmDal.DeletePostedJob();

        Grd_AdminViewAllJobs.DataSource = AdmDal.AdminShowAllJobsByDate(Convert.ToDateTime(txt_Fmdate.Text), Convert.ToDateTime(txt_Todate.Text));

        Grd_AdminViewAllJobs.DataBind();

    }

=================================================================================Modify User :

AdminDal AdmDal = new AdminDal();

    protected void Page_Load(object sender, EventArgs e)

    {

        if (Session["Admin"].ToString() == "")

        {

            Response.Redirect("AdminMain.aspx");

        }

        if (!IsPostBack)

        {

            BindData();

        }

    }

    private void BindData()

    {

        AdmDal.JobSeekerId = Session["UserEmail"].ToString();

        DataSet ds = new DataSet();

        ds = AdmDal.GetAdminRegisteredUser();

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

        {

            txtDName.Text = ds.Tables[0].Rows[0]["JR_DisplayName"].ToString();

            txteMail.Text = ds.Tables[0].Rows[0]["JR_Email"].ToString();

            txtFname.Text = ds.Tables[0].Rows[0]["JR_FirstName"].ToString();

            txtLname.Text = ds.Tables[0].Rows[0]["JR_LastName"].ToString();

            txtAddress.Text = ds.Tables[0].Rows[0]["JR_Address"].ToString();

            txtCity.Text = ds.Tables[0].Rows[0]["JR_City"].ToString();

            txtState.Text = ds.Tables[0].Rows[0]["JR_State"].ToString();

            txtCountry.Text = ds.Tables[0].Rows[0]["JR_Country"].ToString();

            string JType = ds.Tables[0].Rows[0]["JR_Type"].ToString();

            if (JType == "Poster")

           {

           

               RadioButtonList1.Items.FindByValue("Poster").Selected = true;

           }

            else

           {

               RadioButtonList1.Items.FindByValue("Seeker").Selected = true;

           }

        }

    }

    protected void btnBack_Click(object sender, EventArgs e)

    {

        Response.Redirect("../Admin/ListOfRegCandidates.aspx");

    }

===============================================================

Admin class file:

public class AdminDal

{

    public static string username;

    public static string password;

  

    private string _JobSeekerId;

    public string JobSeekerId

    {

        get { return _JobSeekerId; }

        set { _JobSeekerId = value; }

    }

      public AdminDal()

      {

            //

            // TODO: Add constructor logic here

            //

      }

    public DataSet AdminShowAllRegisterByDate(DateTime FromDt, DateTime ToDt)

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Get_Admin_ViewRegUsers", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@FromDate", FromDt);

        cmd1.Parameters.AddWithValue("@ToDate", ToDt);

        SqlDataAdapter da = new SqlDataAdapter(cmd1);

        DataSet ds = new DataSet();

        da.Fill(ds);

        return ds;

    }

    public void DeleteRegisterUserInfo()

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Delete_Admin_RegisterUserInfo", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@Email", this._JobSeekerId);

        cmd1.ExecuteNonQuery();

        con.Close(); 

    }

    public DataSet GetAdminRegisteredUser()

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Get_Admin_RegisteredUser", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@P_EmailId", this._JobSeekerId);

        SqlDataAdapter da = new SqlDataAdapter(cmd1);

        DataSet ds = new DataSet();

        da.Fill(ds);

        return ds;

    }

    public DataSet AdminJobSeekerAppliedJobDetails()

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Get_Admin_BiddedJobDetails", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        SqlDataAdapter da = new SqlDataAdapter(cmd1);

        DataSet ds = new DataSet();

        da.Fill(ds);

        return ds;

    }

    public DataSet ShowAppliedJobDetailOfJobsseker()

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Get_Admin_ShowAppliedJobDetailOfJobsseker", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@JobSeekerId", this._JobSeekerId);

        SqlDataAdapter da = new SqlDataAdapter(cmd1);

        DataSet ds = new DataSet();

        da.Fill(ds);

        return ds;

    }

    public DataSet AdminShowAllJobsByDate(DateTime FromDt, DateTime ToDt)

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Get_Admin_ViewAllJobs", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@FromDate", FromDt);

        cmd1.Parameters.AddWithValue("@ToDate", ToDt);

        SqlDataAdapter da = new SqlDataAdapter(cmd1);

        DataSet ds = new DataSet();

        da.Fill(ds);

        return ds;

    }

    public void DeletePostedJob()

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Delete_Admin_PostedJob", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@JobId", this._JobSeekerId);

        cmd1.ExecuteNonQuery();

        con.Close();

    }

    public DataSet GetAdminSelectedJob()

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Get_Admin_SelectedJobDetais", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@P_JobId", this._JobSeekerId);

        SqlDataAdapter da = new SqlDataAdapter(cmd1);

        DataSet ds = new DataSet();

        da.Fill(ds);

        return ds;

    }

    public DataSet ShowBiddersAppliedToJob()

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd1 = new SqlCommand("Get_Admin_BiddersAppliedToJob", con);

        cmd1.CommandType = CommandType.StoredProcedure;

        cmd1.Parameters.AddWithValue("@P_JobId", this._JobSeekerId);

        SqlDataAdapter da = new SqlDataAdapter(cmd1);

        DataSet ds = new DataSet();

        da.Fill(ds);

        return ds;

    }

    public bool AdmLogin(string Email, string Password)

    {

        int count;

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        SqlCommand cmdlogin1 = new SqlCommand("Get_Adminlogin", con);

        cmdlogin1.CommandType = CommandType.StoredProcedure;

        cmdlogin1.Parameters.AddWithValue("@P_userid", Email);

        cmdlogin1.Parameters.AddWithValue("@P_password", Password);

        count = Convert.ToInt32(cmdlogin1.ExecuteScalar());

        if (count > 0)

            return true;

        else

           return false;

    }

    public int JobEmailCount(string Email)

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd = new SqlCommand("Job_EmailCount", con);

        cmd.CommandType = CommandType.StoredProcedure;

        cmd.Parameters.Add("@EmailAddress", SqlDbType.NVarChar).Value = Email;

        int count = Convert.ToInt32(cmd.ExecuteScalar());

        con.Close();

        return count;

    }

    public void UpdateUser(string DName,string eMail,string Fname,string Lname,string Address,string City,string State,string Country)

    {

        if (con.State == ConnectionState.Open)

        {

            con.Close();

        }

        con.Open();

        cmd = new SqlCommand("Update_Job_USER_Information", con);

        cmd.CommandType = CommandType.StoredProcedure;

        cmd.Parameters.AddWithValue("@P_DisplayName", DName);

        cmd.Parameters.AddWithValue("@P_Email", eMail);

        cmd.Parameters.AddWithValue("@P_FirstName", Fname);

        cmd.Parameters.AddWithValue("@P_LastName", Lname);

        cmd.Parameters.AddWithValue("@P_Address", Address);

        cmd.Parameters.AddWithValue("@P_City", City);

        cmd.Parameters.AddWithValue("@P_State", State);

        cmd.Parameters.AddWithValue("@P_Country", Country);

        cmd.ExecuteNonQuery();

        con.Close();

    }

}

===============================================================================