How do you declare pAssword invalid in asp.net if the password we typed does not match with the one in sql table

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suppose if the password v type in the text box does not match wid the one in sql.. can anyone give the code for displayin that error message in label. Here we are not using any ID

Posted 23-Dec-11 22:54pm

Nihal Hussain

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Monjurul Habib · Answer 1 · 2011-12-23T22:58:00

Solution 1

Try following:
Notifying Users Why Their Login Failed in the ASP.NET Login Control
How To: Instrument ASP.NET Applications for Security

Posted 23-Dec-11 22:58pm

Monjurul Habib

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Nihal Hussain 24-Dec-11 5:08am

without using stored procedur is der ny method.. I hv done encryption 4 d password

ManavGuru · Answer 2 · 2011-12-23T23:04:00

public void login()
{
string strLoginId;
        string strPassword;
        DataSet oDs = null;
        bool IsRemember = chkRememberMe.Checked;
 
//this is class file where you will be write your code for get the information to database
   CityBusinessLogics.AdminLogics oAdmin = new CityBusinessLogics.AdminLogics();
        strLoginId = txtUsername.Text.Trim();
        strPassword = txtPassword.Text.Trim();
        HttpCookie OnlineCookie = new HttpCookie("OnlineCookie");
 
        if (Page.IsValid)
        {
            try
            {
                oDs = oAdmin.ValidateAdminLogin(strLoginId, strPassword);
                if (oDs.Tables[0].Rows.Count <= 0)
                {
                    lblMessage.Text = "Wrong LoginId or Password !!";
                    lblMessage.Visible = true;
                }
                else if (IsRemember)
                {
                    string EnUserName, EnPwd;
                    EnUserName = oAdmin.base64Encode(strLoginId);
                    EnPwd = oAdmin.base64Encode(strPassword);
 
                    OnlineCookie.Values.Add("UserName", EnUserName);
                    OnlineCookie.Values.Add("Password", EnPwd);
                   
 
                    Response.Cookies.Add(OnlineCookie);
                    OnlineCookie.Expires = DateTime.Now.AddDays(15);
 
                    Session["Admin"] = strLoginId;
                   
                 if (Session["Admin"].ToString() == "admin")
                       Response.Redirect("AdminChangePassword.aspx");
                   else
                        Response.Redirect("RoleTask.aspx");
 
                }
                else
                {
                    //OnlineCookie.Values.Add("UserName",string .Empty);
                    //OnlineCookie.Values.Add("Password", string.Empty);
                    //OnlineCookie.Values.Add("Roles", string.Empty);
                    //Response.Cookies.Add(OnlineCookie);
                    //OnlineCookie.Expires = DateTime.Now.AddMinutes(5);
                    Session["Admin"] = strLoginId;
                   // Session["Roles"] = oDs.Tables[0].Rows[0]["RoleIds"].ToString();
                  if (Session["Admin"].ToString() == "admin")
                      Response.Redirect("AdminChangePassword.aspx");
                   else
                        Response.Redirect("RoleTask.aspx");
                }
 
            }
            catch
            {
                lblMessage.Text = "Login failed.";
                lblMessage.Visible = true;
            }
        }