ASP.NET

Re: hi experts..i'm using dropdownlist statically for gender field its not show me proper data when im update

12-May-16 1:56

All I could see that you are using the same SelectList for Gender dropdown. What is your error? Unless you specify exactly what issue you are facing we cannot help you.

Are you expecting the dropdown showing the correct gender by default while Edit view in the page?

sunil317-May-16 20:19

sunil3

17-May-16 20:19

im expecting what is the data(male or Female) on edit field that should be come on dropdown list..

Re: hi experts..i'm using dropdownlist statically for gender field its not show me proper data when im update

John C Rayan18-May-16 1:12

18-May-16 1:12

I would suggest you implement the same logic as you have done for Dept dropdown. GEnerate the select list in the action and set the selected gender in the select list before sending to View.

Calendar

Member 125105918-May-16 15:09

Member 12510591

8-May-16 15:09

Hi to Everyone 
What I want to do is read from a database a list of already entered data which has a date as part of the record, I am fine with that, then using the standard ASP controls + free AJAX controls or other free controls where there is no caveat to their use.

Display in a calendar control or the like a standard month style layout but with all the previously used/ selected days highlighted in some way so the user knows what dates have been previously used.
So with the current date being 09/May/2015 (UK Time) if data had been previously entered against 
(02/05/2016), (05/05/2016), (08/05/2016)  
Those days would be highlighted in the calendar control or similar
I could of course provide a side list of previously used dates in a separate control but where is the challenge in that.
 I am not a seasoned ASP person my background is desktop development in VB3, VB5, VB6 VB.Net and C# and T-SQL so I know a thing or two about programming just not the ASP controls or what they can accomplish.

Thanks to all who reads this

Re: Calendar

John C Rayan12-May-16 1:59

Re: How to block bad users

12-May-16 1:59

Most calendars support what you are trying to do. What calendar control are you using? JQuery , that sort ?

How to block bad users

Vimalsoft(Pty) Ltd7-May-16 23:37

Vimalsoft(Pty) Ltd

7-May-16 23:37

Good day

We have a asp.net website high traffic website. When a user registers we store the ip address i that user,when the login we store all ip addreses he used and we have a blocking module which blocks a username and all the ip's associated with that username. So that those who want to create other accounts from same location will be blocked. This morning we had few incidents where we needed to block the fake user. Can anyone scrutinise my approach and there is anything to my approach that i can add to make it rock solid i would appreciate. We also have a mobile app which also does the same in terms of Imei and it blocks the phones which is easy.

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vimalsoft.com
vuyiswa[at]vimalsoft.com

Kornfeld Eliyahu Peter8-May-16 1:43

Kornfeld Eliyahu Peter

8-May-16 1:43

You can ask Chris how hard it is to block the same user, based on data from some previously banned account...
As you may already know IP banning has it disadvantages, but to be honest, there is no really reliable method to block new users based on old data...
No IP address, no email, no user-name and nothing other will for sure connect one account to an other, so always will miss someone bad, why probably block someone innocent...
So with all the sorrow - there is no 'rock solid' solution, but bad and worst only...

Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.

Re: How to block bad users

John C Rayan12-May-16 2:09

Passing a std::list using gSOAP

12-May-16 2:09

Unfortunately it is very hard to identify the users using IP addresses because for some ISPs all customers might have similar IP address. The only way of doing this is installing small programs in the browser and getting their MAC address which is unique for all users but which is not possible without user permission.

GazMiller19794-May-16 21:39

GazMiller1979

4-May-16 21:39

I'm trying to use gSOAP with C++ to pass a std::list of a simple structure using the soapstd2 compiler to generate the relevant WSDL for a legacy application that I'm trying to offer as a web service.

Heres the gSOAP header that I have defined in the legacy C++ app:

C++

//gsoap ns service name:        Arpa service described at http://localhost:5801/ArpaService
//gsoap ns service protocol:    SOAP
//gsoap ns service namespace:   http://localhost:5801/arpa.wsdl
//gsoap ns service location:    http://localhost:5801/arpaserver.cgi

#import "stl.h"

class ns__arpaTarget
{
public:
    int    nTgtNo;
    std::string  name;
    double dRange;
    double dBearing;
    ns__arpaTarget();
    ~ns__arpaTarget();
};

class ns__arpaList
{
public:
    std::list <ns__arpaTarget> arpa_lst;   
};

//gsoap ns service method: 
int ns__getArpaList( ns__arpaList* lst );

I'm compiling this within Visual Studio 2008, with the following pre build event to generate the WSDL:

C++

W:\gSOAP\gsoap-2.8\gsoap\bin\win32\soapcpp2  -I W:\gSOAP\gsoap-2.8\gsoap\import -t W:\gSOAP\gsoap-2.8\gsoap\WS\typemap.dat -j -s gSOAPArpaWebService.h

This is all building fine at the server end (I have an implementation of the function which builds and runs and supplies a list of my simple structure) - it's also generating the WSDL which looks like this:

XML

<?xml version="1.0" encoding="UTF-8"?>
<definitions name="Arpa"
  targetNamespace="http://localhost:5801/arpa.wsdl"
  xmlns:tns="http://localhost:5801/arpa.wsdl"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:ns="http://localhost:5801/arpa.wsdl"
  xmlns:SOAP="http://schemas.xmlsoap.org/wsdl/soap/"
  xmlns:HTTP="http://schemas.xmlsoap.org/wsdl/http/"
  xmlns:MIME="http://schemas.xmlsoap.org/wsdl/mime/"
  xmlns:DIME="http://schemas.xmlsoap.org/ws/2002/04/dime/wsdl/"
  xmlns:WSDL="http://schemas.xmlsoap.org/wsdl/"
  xmlns="http://schemas.xmlsoap.org/wsdl/">

<types>

  <schema targetNamespace="http://localhost:5801/arpa.wsdl"
    xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:ns="http://localhost:5801/arpa.wsdl"
    xmlns="http://www.w3.org/2001/XMLSchema"
    elementFormDefault="qualified"
    attributeFormDefault="unqualified">
    <import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
    <complexType name="arpaTarget"><!-- ns__arpaTarget -->
          <sequence>
            <element name="nTgtNo" type="xsd:int" minOccurs="1" maxOccurs="1"/><!-- ns__arpaTarget::nTgtNo -->
            <element name="name" type="xsd:string" minOccurs="1" maxOccurs="1"/><!-- ns__arpaTarget::name -->
            <element name="dRange" type="xsd:double" minOccurs="1" maxOccurs="1"/><!-- ns__arpaTarget::dRange -->
            <element name="dBearing" type="xsd:double" minOccurs="1" maxOccurs="1"/><!-- ns__arpaTarget::dBearing -->
          </sequence>
    </complexType>
    <!-- operation request element -->
    <element name="getArpaList">
      <complexType>
          <sequence>
          </sequence>
      </complexType>
    </element>
    <!-- operation response element -->
    <element name="arpaList">
      <complexType>
          <sequence>
            <element name="arpa-lst" type="ns:arpaTarget" minOccurs="0" maxOccurs="unbounded"/><!-- ns__arpaList::arpa_lst -->
          </sequence>
      </complexType>
    </element>
  </schema>

</types>

<message name="getArpaList">
  <part name="Body" element="ns:getArpaList"/><!-- ns__getArpaList::ns__getArpaList -->
</message>

<message name="arpaList">
  <part name="Body" element="ns:arpaList"/><!-- ns__getArpaList::lst -->
</message>

<portType name="ArpaPortType">
  <operation name="getArpaList">
    <documentation>Service definition of function ns__getArpaList</documentation>
    <input message="tns:getArpaList"/>
    <output message="tns:arpaList"/>
  </operation>
</portType>

<binding name="Arpa" type="tns:ArpaPortType">
  <SOAP:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
  <operation name="getArpaList">
    <SOAP:operation soapAction=""/>
    <input>
          <SOAP:body parts="Body" use="literal"/>
    </input>
    <output>
          <SOAP:body parts="Body" use="literal"/>
    </output>
  </operation>
</binding>

<service name="Arpa">
  <documentation>service described at http://localhost:5801/ArpaService</documentation>
  <port name="Arpa" binding="tns:Arpa">
    <SOAP:address location="http://localhost:5801/arpaserver.cgi"/>
  </port>
</service>

</definitions>

At the client end I'm referencing the generated gSOAP WSDL and successfully importing the service via an ASP.NET web application - but when I try to use the service function of the imported service to retrieve the list of ns__arpaTarget types the service only offers the following function signature that I don't understand or know how to use (perhaps this is my problem?):

Radar_Services_Web_Client.ArpaSrv.arpaTarget[] ArpaPortTypeClient.getArpaList( Radar_Services_Web_Client.ArpaSrv.getArpaList getArpaList1 )

Note: I have tried this without a list and I am able to get a single structure out from the service into the client call successfully. I've also tried a list of pointers to ns__arpaTarget - as the gSOAP documentation tells me this is a safer way of doing so but the same problem occurs (i.e. I get the same strange signature to use in the client).

Any help would be greatly appreciated. Many thanks, Gary.

hi experts imgetting the error index out of rang pls help to solve

sunil34-May-16 21:04

sunil3

4-May-16 21:04

Error Is: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

controller code:
public ActionResult Edit(int id = 0)
{
Student1 student1 = new Student1();
StudentCRUD stud = new StudentCRUD();

    var st = stud.SelectById(id);
   // if (st == null)
   // {
   //     return HttpNotFound();
   // }
    if (st != null)
    {
        student1.First_Name = st.First_Name;
        student1.Middle_Name = st.Middle_Name;
        student1.Last_Name = st.Last_Name;
        student1.Contact_No = st.Contact_No;
        student1.Email_ID = st.Email_ID;
        student1.Temp_Address = st.temp_Address;
        student1.Permanant_Address = st.permanant_address;
        student1.CountryName = st.CountryName;
        student1.StateName = st.StateName;
        student1.CityName = st.CityName;
    }

    ViewBag.CityID = new SelectList(db.Cities, "CityID", "CityName", student1.CityID);
    ViewBag.CountryID = new SelectList(db.Countries, "CountryID", "CountryName", student1.CountryID);
    ViewBag.StateID = new SelectList(db.States, "StateID", "StateName", student1.StateID);
    return View(student1);
}

StudentCRUD Class:

public Sp_FindbyId_Result SelectById(Nullable<int> stid)
{
var stud = db.Sp_FindbyId(stid).ToList();
return (stud[0]); // Error coming here
}

Re: hi experts imgetting the error index out of rang pls help to solve

Richard MacCutchan4-May-16 22:58

Re: hi experts imgetting the error index out of rang pls help to solve

4-May-16 22:58

That means there are no entries in your list. You need to use your debugger to find out why you did not retrieve any records.

Kunwar Bahadur Singh5-May-16 0:43

Kunwar Bahadur Singh

5-May-16 0:43

First check that the method "db.Sp_FindbyId(stid)" return any value or not.

this exeception is because in code var stud = db.Sp_FindbyId(stid).ToList();

stud is not having any recored.

In this case better to use
return (stud.FirstOrDefault())

Re: hi experts imgetting the error index out of rang pls help to solve

sunil35-May-16 1:56

sunil3

5-May-16 1:56

Thanks ...Richard MacCutchan & Kunwar Bahadur Singh

Re: hi experts imgetting the error index out of rang pls help to solve

John C Rayan12-May-16 2:47

Re: hi experts imgetting the error index out of rang pls help to solve

12-May-16 2:47

You could put a check before accessing the value from the list

var stud = db.Sp_FindbyId(stid).ToList();
   if (stud.Count() > 0 ){
       return (stud[0]);
   }else{
     // return empty object or null
   }

Richard Deeming12-May-16 3:22

Richard Deeming

12-May-16 3:22

FirstOrDefault will do exactly the same thing, as suggested in the reply above yours. Smile | :)

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: hi experts imgetting the error index out of rang pls help to solve

John C Rayan12-May-16 4:24

12-May-16 4:24

I agree , that will do as well. Thanks for pointing out to me. I think I overlooked the last line.

Form not sending

Member 87616674-May-16 5:32

4-May-16 5:32

Hello

I have been trying for some time to log-in to a site who register.aspx page works (new user's details are inserted in the database).

However, when I use those same details of a user (email and password) to log-in, I am not able to. I get no debug errors in Visual Studio 2013 for Web or server errors. The form just stands still when I click the logon button.

Are there are glaring errors, please, in my log-on code? In my aspx file, the two form fields are ID = strEmail and ID = password:

 Protected Sub LogonBtn_Click(sender As System.Object, e As System.EventArgs) Handles LogonBtn.Click

        Try

            Using conn As OleDbConnection = New OleDbConnection(System.Configuration.ConfigurationManager.ConnectionStrings("students").ConnectionString)

                conn.Open()

                Dim strEmailValue As String = strEmail.Text
                Dim passwordValue As String = password.Text
                Dim MSAccess As String = "Provider=Microsoft.Jet.OleDb.4.0; Data Source=|DataDirectory|students.mdb;"
                Dim ConnectionString As String = "SELECT * FROM university WHERE strEmail = '" & strEmailValue & "' AND [password] = '" & passwordValue & "'"

                Dim cmd As New OleDbCommand

                Dim reader As OleDbDataReader = cmd.ExecuteReader

                Dim strEmailFound As Boolean = False

                Dim passwordFound As Boolean = False

                'if in database:

                While reader.Read

                    strEmailFound = True

                    strEmailValue = reader("strEmail")

                    passwordFound = True

                    passwordValue = reader("password")

                End While

                conn.Close()

                'check result

                If strEmailFound = True And passwordFound = True Then

                    Dim target = String.Format("~/userpage.aspx?strEmail={0}", strEmailValue)

                    Response.Redirect(target, True)

                End If

            End Using

        Catch ex As Exception

            Console.WriteLine(ex.Message)

            Dim MessageBox As String

            MessageBox = "Sorry, email or password not found"

        End Try

    End Sub

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        'Dim strEmailValue As String = ""

        'Dim strEmailValue As String = strEmail.Text

        If Not IsPostBack Then

            strEmail.Text = String.Format("{0}", Request.QueryString("strEmail"))

        End If

        LblDate.Text = ReturnDate()

        strEmail.Focus()

    End Sub

End Class

Many thanks!

Richard MacCutchan4-May-16 5:57

4-May-16 5:57

Apart from the potential for SQL injection problems with your database, do you really want to store passwords in clear text?

[edit]
Also look at the following sequence:

While reader.Read

    strEmailFound = True

    strEmailValue = reader("strEmail")

    passwordFound = True

    passwordValue = reader("password")

End While

You are setting both variables to True without actually checking whether you have found the specific entries in the database. You need to read through your code carefully and check your logic.
[/edit]

Member 87616674-May-16 7:27

4-May-16 7:27

Hello Richard

Many thanks for your reply.

Yes, there are a couple of flaws - plain text passwords as opposed to salting/hashing, and empty form fields - but for the moment I just wanted to get the engine started and then, when I can log in, I will explore those other important features of a log-in form.

Thanks for pointing out the While reader.Read/End While

You mean it's not actually doing anything?!

Thanks again for your reply.

Richard MacCutchan4-May-16 9:33

4-May-16 9:33

Look again at my previous reply and the (il)logic of that loop. As soon as you come out of the loop you assume that there has been a match with the email and password entered by the user, but the two variables will contain the last found items.

Member 87616674-May-16 10:07

4-May-16 10:07

I am trying to tidy it up a little. I didn't have these namespaces in, for example, beforehand:

Imports System.Data.OleDb.OleDbCommand
Imports System.Data.OleDb.OleDbDataReader

and the 'order' is OleDbConnection, an OleDbCommand, and an OleDbDataReader. The While/End While code should then read through the data, before closing OleDbDataReader, and then OleDbConnection.

That structure is now reflected in my own code.

The examples I have see around look a lot like this:

dr = myCommand.ExecuteReader()
     While dr.Read()
     'reading from the datareader
      MessageBox.Show("colname1" & dr(0).ToString())
      'displaying the data from the table
      End While
      dr.Close()

I probably need to use something like this

("colname1" & 
dr(0).ToString())

from the example above, but I don't want the code to display anything - only to log me on.

As I said earlier, the code I initially posted doesn't actually 'read' the rows, does it?

Richard MacCutchan4-May-16 20:51

4-May-16 20:51

Member 8761667 wrote:
the code I initially posted doesn't actually 'read' the rows, does it?

No idea, you need to do some debugging to check it. I have tried to explain where the logic is wrong in your loop, but you seem to be looking elsewhere.

Member 87616675-May-16 0:04