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ASP.NET Membership ChangePassword - Need to Verify Previous Password

I have a new table that stores old passwords, I need to check if there is a match.

If there is a match, I need the ChangePassword variable to NOT change the password. I need to inform the user that this password has been used and pic is new.

I cannot force interruption of password change management. Maybe I'm using the wrong event.

Here is part of my code or how I want it to work. I appreciate your help.

protected void ChangePassword1_ChangedPassword(object sender, EventArgs e)
    {
        MembershipUser user = Membership.GetUser();
        string usrName = "";
        if (user != null)
        {
            string connStr = ConfigurationManager.ConnectionStrings["LocalSqlServer"].ConnectionString;
            SqlConnection mySqlConnection = new SqlConnection(connStr);
            SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
            mySqlCommand.CommandText = "Select UserName from OldPasswords where UserName = 'test'";
            mySqlConnection.Open();
            SqlDataReader mySqlDataReader = mySqlCommand.ExecuteReader(CommandBehavior.Default);
            while (mySqlDataReader.Read())
            {
                usrName = mySqlDataReader["UserName"].ToString();
                if (usrName == user.ToString())
                {

                    Label1.Text = "Match";
                }
                else
                {
                    Label1.Text = "NO Match!";
                }
            }
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1 answer

You are redefining the wrong method, Steve. You want to cancel the cancellation ChangingPassword.

Try the following:

protected void ChangePassword1_ChangingPassword(object sender, LoginCancelEventArgs e)
{
    // do your lookup here, 
    bool passwordHasBeenPreviouslyUsed = true;

    if (passwordHasBeenPreviouslyUsed)
    {
        e.Cancel = true;
        // notify of error
        return;
    }

}

, Q/A, 1. , .

.

(1) - , , ? , , , . .; -)

:

ChangePassword.aspx

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Diagnostics"%>

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void ChangePassword1_ChangingPassword(object sender, LoginCancelEventArgs e)
    {
        // works for me!
        Debugger.Break();
    }
</script>

<!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 runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ChangePassword ID="ChangePassword1" runat="server" OnChangingPassword="ChangePassword1_ChangingPassword">
        </asp:ChangePassword>
    </div>
    </form>
</body>
</html>

: , :

public void SetupPasswordActionHook()
{

    //Occurs when a user is created, a password is changed, or a password is reset.
    Membership.ValidatingPassword += Membership_ValidatingPassword;
}

void Membership_ValidatingPassword(object sender, ValidatePasswordEventArgs e)
{

    // Gets a value that indicates whether the System.Web.Security.MembershipProvider.ValidatingPassword event is being raised during a 
    // call to the System.Web.Security.MembershipProvider.CreateUser() method.

    // true if the System.Web.Security.MembershipProvider.ValidatingPassword event is being raised during a call to the 
    // System.Web.Security.MembershipProvider.CreateUser() method; otherwise, false.
    bool isNewUser = e.IsNewUser;

    // Gets the password for the current create-user, change-password, or reset-password action.

    // The password for the current create-user, change-password, or reset-password action.
    string password = e.Password;

    // Gets the name of the membership user for the current create-user, change-password, or reset-password action.

    // The name of the membership user for the current create-user, change-password, or reset-password action.
    string username = e.UserName;

    // Gets or sets a value that indicates whether the current create-user, change-password, or reset-password action will be canceled.

    // true if the current create-user, change-password, or reset-password action will be canceled; otherwise, false. The default is false.
    e.Cancel = true;

    // Gets or sets an exception that describes the reason for the password-validation failure.

    // An System.Exception that describes the reason for the password-validation failure.
    e.FailureInformation = new Exception("This is why I failed your password");

}
+6

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