when a method is called i want to get first index value from an arraylist and when the same methid is called nxt time i want to get the second index value from the same arraylist...how? - C# Discussion Boards

when a method is called i want to get first index value from an arraylist and when the same methid is called nxt time i want to get the second index value from the same arraylist...how?

1-Feb-09 20:17

Search BinaryReader and BinaryWriter in MSDN.

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merryjoy00031-Jan-09 20:30

merryjoy000

31-Jan-09 20:30

when a method is called i want to get first index value from an arraylist and when the same method is called next time i want to get the second index value from the same arraylist...how can i do that?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;

namespace roseapp2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{

}
public ArrayList MPN = new ArrayList();
public string[,] Modems = new string[,]
{
{"Apple", "Banana", "81563840", "Damson"},
{"Elderberry", "Fig", "81547907", "Huckleberry"},
{"Indian Prune", "Jujube", "98764343322", "Lime"}
};
public string arrayValue;

private void button1_Click_1(object sender, EventArgs e)
{
// getphnum();

RoundRobin();
}
private int z = 0;
public void RoundRobin()
{

if (Modems == null)
throw new ArgumentNullException("Modem");
if (Modems.Length < 0)
return;

//int Count = 0;
int i;
int x = Modems.Length/4;

MessageBox.Show(Convert.ToString(x));
for (i = 0; i < x; i++)
{
string a = Modems[i, 2];
MessageBox.Show(a);
arrayValue = a;
MPN.Add(arrayValue);
}

for (int a = 0; a < MPN.Count; a++)
{
MessageBox.Show("ARRAY VALUE for index "+a+" "+Convert.ToString(MPN[a]));
}

}

public void getphnum()
{
z++;

MessageBox.Show(Convert.ToString(z));
}
}
}
in this when the getphnum() is called one time i wnat to get firts index value(ie index 0 ph number)ie MPN arraylist.ANd when next time when getphnum () is called i want to get index 1 value from arraylist MPN.(ie the same arraylist from which i call my first array index value)..
can somebody help meeeeeeeeeeee Hmmm | :|

Re: when a method is called i want to get first index value from an arraylist and when the same methid is called nxt time i want to get the second index value from the same arraylist...how?

Kashif Sabir31-Jan-09 21:13

Kashif Sabir

31-Jan-09 21:13

Take a static class variable and initialize it with the index of array and when you call the method again just add 1 to that variable i.e use that variable like a counter hope this helps sorry for the bad english.
If thats not what you want then let me know

Re: when a method is called i want to get first index value from an arraylist and when the same methid is called nxt time i want to get the second index value from the same arraylist...how?

Dragonfly_Lee31-Jan-09 21:18

tablelayoutpanel in c#.net in windows application

31-Jan-09 21:18

merryjoy000 wrote:
in this when the getphnum() is called one time i wnat to get firts index value(ie index 0 ph number)ie MPN arraylist.ANd when next time when getphnum () is called i want to get index 1 value from arraylist MPN

Do you mean a counter? If yes, use "static“ for z var.

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dilipmca0431-Jan-09 20:05

dilipmca04

31-Jan-09 20:05

I want to create tablelayoutpanel at runtime ..and this functionality same like how this control is doing at design time..like control moving and rows and Columns resizing..How these control is working at design time same like i need to create at runtime.

please any body know about this please tell me..

Thanks....

Re: tablelayoutpanel in c#.net in windows application

dan!sh 31-Jan-09 21:53

dan!sh

31-Jan-09 21:53

Create an object to TableLayoutPanel class and add it to your form. Go through the documentation to know what all properties are available. Set them and you are done.

The word "politics" describes the process so well: "Poli" in Latin meaning "many" and "tics" meaning "bloodsucking creatures."

जय हिंद

Re: tablelayoutpanel in c#.net in windows application

Alan N31-Jan-09 21:57

Alan N

31-Jan-09 21:57

Hi,
All controls are created at run time and the code for controls that are "designed" within VS resides in the InitializeComponent method of the Form.designer.cs file.

If you are not certain how to write code for a control then just create a test form using the control you want to learn about. Open up the designer.cs file and all will be revealed. The code you would write yourself will be very similar.

Alan.

How to call a string value from a method within another class?

Aghosh Babu31-Jan-09 19:29

Aghosh Babu

31-Jan-09 19:29

i have 2 classes, i want to call a string from one method within a class to another class.

class SMSManager
    {
public string abc;
public void testMethod(string MPN, string RPN, string text)
        {
            SMSModem SMSMdm = new SMSModem();

            MessageBox.Show("RPN" + RPN);
abc = RPN;  //this isnt wrking
           
// HERE I HAVE A STRING CALLED RPN WHICH I WANT TO CALL INTO ANOTHER CLASS. THE RPN VALUE SHOULD
//BE THE SAME AS WHEN THE CODE EXECUTES THE ABOVE MESSAGEBOX CODE.

            int x = myArray.Length / 5;
           
            for (int i = 0; i < x; i++)
            {
                string a = myArray[i, 0];
                if (a == MPN)
                {
                    MessageBox.Show("MODEM NUMBER :"+MPN);
                    SMSModem SMSM = new SMSModem();
                    SMSM.SendSms();
                }
               
            }
             
           
        }

class SMSModem
    {
public bool SendSms()
        {
            try
            {
                SMSManager MGR = new SMSManager();
                string num = MGR.abc;  //This is not retreiving the value!

//I WANT THAT VALUE TO BE CALLED HERE AND ASSIGN IT TO "num"
                MessageBox.Show("RECEIRE" +num);
               
                serialPort1.WriteLine("AT+CMGF=1;+CSCA=\"+6598540020\";+CMGS=\"+65" + num + "\"\r\n");
                System.Threading.Thread.Sleep(40);
                serialPort1.Write("Test message from coded program");

                char[] arr = new char[1];

                arr[0] = (char)26; //ascii value of Ctrl-Z

                serialPort1.Write(arr, 0, 1);

                System.Threading.Thread.Sleep(3000);
                string data = serialPort1.ReadExisting();

                MessageBox.Show(data);

                if (data.IndexOf("OK") != -1)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch
            {
                return false;
            }
        }
       
    }

Re: How to call a string value from a method within another class?

Karmendra Suthar31-Jan-09 19:50

Re: How to call a string value from a method within another class?

31-Jan-09 19:50

MSManager MGR = new SMSManager();
string num = MGR.abc;  //This is not retreiving the value!
//I WANT THAT VALUE TO BE CALLED HERE AND ASSIGN IT TO "num"
MessageBox.Show("RECEIRE" +num);

string num = MGR.abc; before you can do this you need to call MGR.testMethod which actually does abc = RPN;

Alternatively

You can set the abc in a constructor.

Regards,
Karmendra

Aghosh Babu31-Jan-09 20:15

Aghosh Babu

31-Jan-09 20:15

i call the MGR.testMethod in the button event in another form as:

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public void sampleArray()
        {

        }

       

        

        private void button1_Click(object sender, EventArgs e)
        {
            SMSManager sm = new SMSManager();
            
            sm.testMethod("82083427", "1122887779", "testmessagetxt");
        }
    }

how can i retreive the value then??

Re: How to call a string value from a method within another class?

Karmendra Suthar1-Feb-09 1:00

Re: How to call a string value from a method within another class?

1-Feb-09 1:00

Think you need to re-visit OOPS concepts.

In button click event you have created another object sm and you have set sm.abc by running testMethod.

and you have never run SMSMdm.testMethod to set SMSMdm.abc, it wil give error also because you have never initialized SMSMdm.abc.

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            SMSManager <big>sm</big> = new SMSManager();
        }
        public void sampleArray()
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {            
            sm.testMethod("82083427", "1122887779", "testmessagetxt");
        }
    }

class SMSManager
    {
        public string abc="";
        public void testMethod(string MPN, string RPN, string text)
        {
            SMSModem SMSMdm = new SMSModem();

            MessageBox.Show("RPN" + RPN);
            abc = RPN;  //this isnt wrking

            int x = myArray.Length / 5;
           
            for (int i = 0; i < x; i++)
            {
                string a = myArray[i, 0];
                if (a == MPN)
                {
                    MessageBox.Show("MODEM NUMBER :"+MPN);
                    SMSModem SMSM = new SMSModem();
                    SMSM.SendSms();
                }
            }
        }

class SMSModem
    {
public bool SendSms()
        {
            try
            {
                //this is not required now
                //SMSManager MGR = new SMSManager();
                //string num = MGR.abc;  //This is not retreiving the value!

                //I WANT THAT VALUE TO BE CALLED HERE AND ASSIGN IT TO "num"

                string num = <big>sm</big>.abc;
                MessageBox.Show("RECEIRE" +num);
         serialPort1.WriteLine("AT+CMGF=1;+CSCA=\"+6598540020\";+CMGS=\"+65" + num + "\"\r\n");
                System.Threading.Thread.Sleep(40);
                serialPort1.Write("Test message from coded program");

                char[] arr = new char[1];

                arr[0] = (char)26; //ascii value of Ctrl-Z

                serialPort1.Write(arr, 0, 1);

                System.Threading.Thread.Sleep(3000);
                string data = serialPort1.ReadExisting();

                MessageBox.Show(data);

                if (data.IndexOf("OK") != -1)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch
            {
                return false;
            }
        }
       
    }

Remember all these should be in same namespace.

Regards,
Karmendra

Dragonfly_Lee31-Jan-09 20:11

31-Jan-09 20:11

Aghosh Babu wrote:
abc = RPN; //this isnt wrking

What do you mean it did not work? It is just a simple assign-op. Maybe you can debug it.

Aghosh Babu wrote:
string num = MGR.abc; //This is not retreiving the value!//I WANT THAT VALUE TO BE CALLED HERE AND ASSIGN IT TO "num"

According to the cdoe, the value should be null.

I Love KongFu~

Protect password file

Karmendra Suthar31-Jan-09 19:27

31-Jan-09 19:27

Hi,
I have created a login in my winform application, i encrypt the password and store in a xml file.

I am worried about if the user deletes the xml file, he can crack into the system.

can you please suggest me how to make sure user cannot delete the xml file.

I tried embedding the xml file but, if i do that authorized users will not be able to change password and update the xml.

Please help

Thanks for your time and knowledge,
Karmendra

Dragonfly_Lee31-Jan-09 20:02

31-Jan-09 20:02

KSuthar wrote:
if the user deletes the xml file, he can crack into the system.

Why? If the application can not validate the password by using your xml file, in other words, the validation fails. In this case, the app should not let the user login. Hence, it should not be the problem at all.

I Love KongFu~

Karmendra Suthar1-Feb-09 0:53

1-Feb-09 0:53

And if the user deletes the xml file by going to the physical location of the file. what shall I do in such case. as of now my program recreates the xml with default password.

Dave Kreskowiak1-Feb-09 1:45

Dave Kreskowiak

1-Feb-09 1:45

KSuthar wrote:
And if the user deletes the xml file by going to the physical location of the file. what shall I do in such case. as of now my program recreates the xml with default password.

That's entirely up to you and your app specifications how it should respond. Recreating with a default password seems reasonable, IF it doesn't compromise the secruity of your data.

Oh! You can't stop someone from deleting the file...

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Dragonfly_Lee1-Feb-09 4:05