Programming Forums > Application Development > C#

Sil3ncer7 · Nov 28th, 2007, 9:36 AM

I am trying to pull a value(9 digit number) from a text box then run it through an array and each run... Then list the array in a list box..

(Toggle Plain Text)

using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

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

        private void cmdProcess_Click(object sender, EventArgs e)
        {
           for (long i = txtstart; i <= txtend; i++)
           lstList.Item.Add(i)
        }
    }
}

But its not running through. It keeps inserting "0" in the lstbox

Any ideas?

Infinite Recursion · Nov 28th, 2007, 10:04 AM

How are you defining txtstart and txtend?

"EventArgs e" should be "System.EventArgs e"

"lstList.Item.Add()" should be "lstList.Items.Add()"

Not sure exactly what you are looking for, but maybe this will help. I suppose it depends on what you expect to be in your array.
This code takes a nine digit number, pushes it to a string to reference its elements, then reads each element into the listbox.

(Toggle Plain Text)

        private void cmdProcess_Click(object sender, System.EventArgs e)
        {
            long num = 123456789;
            string n = num.ToString();

            for (int i = 0; i < 9; i++)
                lstList.Items.Add(n[i]);
        }

Sil3ncer7 · Nov 28th, 2007, 10:10 AM

Quote:

Originally Posted by Infinite Recursion

How are you defining txtstart and txtend?

What do you mean? i guess they would be int cause theyd be a 9 digit number????

Sil3ncer7 · Nov 28th, 2007, 10:16 AM

So, if I were to have a txtbox to enter in that 9 digit number you would just use
long num = val txtStart??

Infinite Recursion · Nov 28th, 2007, 10:49 AM

What are the values of txtstart and txtend when you are entering the for loop? I didn't see where they were defined in code. If they were just referencing the start and end of the nine digit number then use 0 for the start and 8 for the end of your loop like I did. Or was it a range from one nine digit number to another nine digit number?

long num = Convert.ToInt32(txtStart.Text);

Sil3ncer7 · Nov 28th, 2007, 10:53 AM

Here is what I am working on.. if this is a little more understanding

you put in say 3216510001

and you supply the end at say 3216510005

so itll display in the lstList

3216510001
3216510002
3216510003
3216510004
3216510005

etc

mbd · Nov 28th, 2007, 11:24 AM

txtStart.Text would be a string representation of the text the user entered in that box. int.Parse(txtStart.Text) would return an integer representation of that text if it was formatted properly. If it was not formatted properly, it would throw a FormatException.

Infinite Recursion · Nov 28th, 2007, 2:29 PM

Try this...

(Toggle Plain Text)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void cmdProcess_Click_1(object sender, System.EventArgs e)
        {
            long start = Convert.ToInt64(txtStart.Text);
            long stop = Convert.ToInt64(txtEnd.Text);

            for (long i = start; i <= stop; i++)
                lstList.Items.Add(i.ToString());
        }
    }
}

Sil3ncer7 · Nov 28th, 2007, 3:08 PM

Quote:

Originally Posted by Infinite Recursion

Try this...

(Toggle Plain Text)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void cmdProcess_Click_1(object sender, System.EventArgs e)
        {
            long start = Convert.ToInt64(txtStart.Text);
            long stop = Convert.ToInt64(txtEnd.Text);

            for (long i = start; i <= stop; i++)
                lstList.Items.Add(i.ToString());
        }
    }
}

Sweet thanks. I started getting the out of range handler so I was gonna switch it from the int 32 to int64.. Thanks for the help.

Infinite Recursion · Nov 28th, 2007, 3:17 PM

Yeah... my fault for mentioning the int32 without testing it. I caught that problem and switched to int64.

Nov 28th, 2007, 9:36 AM	#1
Sil3ncer7 Programmer Join Date: Sep 2007 Posts: 33 Rep Power: 0	Arraylist ideas I am trying to pull a value(9 digit number) from a text box then run it through an array and each run... Then list the array in a list box.. (Toggle Plain Text) using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace Labelapp { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void cmdProcess_Click(object sender, EventArgs e) { for (long i = txtstart; i <= txtend; i++) lstList.Item.Add(i) } } } using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace Labelapp { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void cmdProcess_Click(object sender, EventArgs e) { for (long i = txtstart; i <= txtend; i++) lstList.Item.Add(i) } } } But its not running through. It keeps inserting "0" in the lstbox Any ideas? __________________ Slowly but surly trying to learn C#, SQL, VB.Net, and wondering if a tornado crosses the equator if it spins backwards....

Nov 28th, 2007, 10:04 AM	#2
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,473 Rep Power: 8	Re: Arraylist ideas How are you defining txtstart and txtend? "EventArgs e" should be "System.EventArgs e" "lstList.Item.Add()" should be "lstList.Items.Add()" Not sure exactly what you are looking for, but maybe this will help. I suppose it depends on what you expect to be in your array. This code takes a nine digit number, pushes it to a string to reference its elements, then reads each element into the listbox. (Toggle Plain Text) private void cmdProcess_Click(object sender, System.EventArgs e) { long num = 123456789; string n = num.ToString(); for (int i = 0; i < 9; i++) lstList.Items.Add(n[i]); } private void cmdProcess_Click(object sender, System.EventArgs e) { long num = 123456789; string n = num.ToString(); for (int i = 0; i < 9; i++) lstList.Items.Add(n[i]); } __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

Nov 28th, 2007, 10:16 AM	#4
Sil3ncer7 Programmer Join Date: Sep 2007 Posts: 33 Rep Power: 0	Re: Arraylist ideas So, if I were to have a txtbox to enter in that 9 digit number you would just use long num = val txtStart?? __________________ Slowly but surly trying to learn C#, SQL, VB.Net, and wondering if a tornado crosses the equator if it spins backwards....

Nov 28th, 2007, 10:49 AM	#5
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,473 Rep Power: 8	Re: Arraylist ideas What are the values of txtstart and txtend when you are entering the for loop? I didn't see where they were defined in code. If they were just referencing the start and end of the nine digit number then use 0 for the start and 8 for the end of your loop like I did. Or was it a range from one nine digit number to another nine digit number? long num = Convert.ToInt32(txtStart.Text); __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

Nov 28th, 2007, 10:53 AM	#6
Sil3ncer7 Programmer Join Date: Sep 2007 Posts: 33 Rep Power: 0	Re: Arraylist ideas Here is what I am working on.. if this is a little more understanding you put in say 3216510001 and you supply the end at say 3216510005 so itll display in the lstList 3216510001 3216510002 3216510003 3216510004 3216510005 etc __________________ Slowly but surly trying to learn C#, SQL, VB.Net, and wondering if a tornado crosses the equator if it spins backwards....

Nov 28th, 2007, 11:24 AM	#7
mbd Programmer Join Date: Nov 2007 Posts: 86 Rep Power: 2	Re: Arraylist ideas txtStart.Text would be a string representation of the text the user entered in that box. int.Parse(txtStart.Text) would return an integer representation of that text if it was formatted properly. If it was not formatted properly, it would throw a FormatException.

Nov 28th, 2007, 2:29 PM	#8
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,473 Rep Power: 8	Re: Arraylist ideas Try this... (Toggle Plain Text) using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace WindowsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void cmdProcess_Click_1(object sender, System.EventArgs e) { long start = Convert.ToInt64(txtStart.Text); long stop = Convert.ToInt64(txtEnd.Text); for (long i = start; i <= stop; i++) lstList.Items.Add(i.ToString()); } } } using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace WindowsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void cmdProcess_Click_1(object sender, System.EventArgs e) { long start = Convert.ToInt64(txtStart.Text); long stop = Convert.ToInt64(txtEnd.Text); for (long i = start; i <= stop; i++) lstList.Items.Add(i.ToString()); } } } __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

Nov 28th, 2007, 3:17 PM	#10
Infinite Recursion Programming Guru Join Date: Jul 2004 Location: United States Posts: 3,473 Rep Power: 8	Re: Arraylist ideas Yeah... my fault for mentioning the int32 without testing it. I caught that problem and switched to int64. __________________ http://jasonpowers.net "There are a thousand hacking at the branches of evil to one who is striking at the root."

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Programming Forums > Application Development > C#

Arraylist ideas