Re: Web Browser With Tabs - C# Discussion Boards

1-Nov-08 11:45

Hi All,

I am writing a web browser application using Visual Studio 08 Express Edition C#. Windows Forms Application... But, one of the hardest problems is that I have founf almost ZERO support for the tabControl. And yes, I've checked MSDN. I need to let the user open new tabs, and have a new web browser control placed inside that newely created tab.

Then I want the user to be able to use the navigation buttons (back forward etc) for each of the web browser controls within the tabs. But, I cannot do this, I also want to be able to use any web browser command for every tab there is. I have tested every code sample i've found and nothing works. Can somebody please help me? Any advice/samp code/tutorials etc would be GREATTLY APPRECIATED!

thanks,
jt.

Pedram Behroozi1-Nov-08 12:13

1-Nov-08 12:13

Hello there,
I don't know what you tried before, maybe if you post your codes here we can help you better.
I think this will help you.
Assume you have a menuStrip and have an Open command which should opens a text file into RTB (Each Tab has a RTB).

void mnuOpen_Click (object sender, EventArgs e)
{
    TabPage tp = tabControl.SelectedTab;
    tp.Controls["RTB"].Text = strng.Format("Open clicked in tab no.{0}", (tabControl.SelectedIndex + 1).ToString());
}

Hope Helps Smile | :)

When you're alone in the Dark, Fear will protect you...

jas0n231-Nov-08 13:35

1-Nov-08 13:35

Thank you so much for your quick reply!

Following, is the code for my Web Browser. It simple creates a new Tab, adds a page and a new WebBrowser in it:

TabPage page = new TabPage("Tab");
     tabControl1.TabPages.Add(page);
     WebBrowser wb = new WebBrowser();
     wb.Dock = DockStyle.Fill;
     page.Controls.Add(wb);

I'm having trouble accessing each individual web browser control. I want to be able to also display the name of the website on the actual tab. Can't seem to do that though... I just got your email and am about to test your code Smile | :)

Which I'm looking forward to...

Thanks,
jt.

jas0n231-Nov-08 14:02

1-Nov-08 14:02

Okay, I couldn't get the code to work. It compiles. But just doesn't work at runtime, nor does it bring up any errors. Weird. Thanks your your help though, I appreciate it. Smile | :)

Here's my code:

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

namespace JT_Explorer
{
    public partial class Form1 : Form
    {

        // The following code is used to move a borderless form.
        public const int WM_NCLBUTTONDOWN = 0xA1;
        public const int HTCAPTION = 0x2;
        [DllImport("User32.dll")]
        public static extern bool ReleaseCapture();
        [DllImport("User32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

        public Form1()
        {
            InitializeComponent();
        }

        private void Stop_Click(object sender, EventArgs e)
        {
            Status.Text = ("Operation aborted.");
        }

        private void AddressBar_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                TabPage page = new TabPage("Tab");
                tabControl1.TabPages.Add(page);
                WebBrowser wb = new WebBrowser();
                wb.Dock = DockStyle.Fill;
                page.Controls.Add(wb);

                wb.Navigate(AddressBar.Text);

            }
        }

        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            this.Close();
            this.Dispose();
            Environment.Exit(-1);
        }

        private void Like_MouseEnter(object sender, EventArgs e)
        {
            LikedList.Visible = true;
            LikedList.BringToFront();
        }

        private void LikedList_MouseLeave(object sender, EventArgs e)
        {
            LikedList.Visible = false;
        }

        private void Tags_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Disabled.");
        }

        private void linkLabel2_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            this.Hide();
        }

        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            this.Show();
        }

        private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons)
            {
                ReleaseCapture();
                SendMessage(Handle, WM_NCLBUTTONDOWN, HTCAPTION, 15);
            }
        }

        private void pictureBox3_Click(object sender, EventArgs e)
        {
            TabPage page = new TabPage("Tab");
            tabControl1.TabPages.Add(page);
            WebBrowser wb = new WebBrowser();
            wb.Dock = DockStyle.Fill;
            page.Controls.Add(wb);

            TabPage tp = tabControl1.SelectedTab;
            tp.Controls["wb"].Text = string.Format("kjh", (tabControl1.SelectedIndex + 1).ToString());
        }
        private void pictureBox2_Click(object sender, EventArgs e)
        {
            tabControl1.SelectedTab.Dispose();
        }

        private void Back_Click(object sender, EventArgs e)
        {
            WebBrowser wb = tabControl1.SelectedTab.Controls[0] as WebBrowser;
            wb.GoBack();
        }

        private void Forward_Click(object sender, EventArgs e)
        {
            WebBrowser wb = tabControl1.SelectedTab.Controls[0] as WebBrowser;
            wb.GoForward();
        }
    }
}

Pedram Behroozi1-Nov-08 19:57

1-Nov-08 19:57

jay_t55 wrote:

TabPage page = new TabPage("Tab");
tabControl1.TabPages.Add(page);
WebBrowser wb = new WebBrowser();
wb.Dock = DockStyle.Fill;
page.Controls.Add(wb);

TabPage tp = tabControl1.SelectedTab;
tp.Controls["wb"].Text = string.Format("kjh", (tabControl1.SelectedIndex + 1).ToString());

OK, I got it. I wonder why you didn't get error! Confused | :confused:

you have to set the Name property of your control (or its Index) in tp.Controls, like this:

TabPage page = new TabPage("Tab");
tabControl1.TabPages.Add(page);
WebBrowser wb = new WebBrowser();
wb.Dock = DockStyle.Fill;
wb.Name = "WebBrowser1";
page.Controls.Add(wb);

TabPage tp = tabControl1.SelectedTab;
tp.Controls["WebBrowser1"].Text = string.Format("kjh", (tabControl1.SelectedIndex + 1).ToString());

tp.Controls["wp"] returns null and you didn't get error in tp.Controls["wp"].Text = ... , really Weird! Laugh | :laugh:

When you're alone in the Dark, Fear will protect you...

jas0n231-Nov-08 21:43

1-Nov-08 21:43

Hello, Thanks again Smile | :)

Here's what I got, now:

private void pictureBox3_Click(object sender, EventArgs e)
{
    TabPage page = new TabPage("Tab");
    tabControl1.TabPages.Add(page);
    WebBrowser wb = new WebBrowser();
    wb.Dock = DockStyle.Fill;
    wb.Name = "WebBrowser1";
    page.Controls.Add(wb);
    TabPage tp = tabControl1.SelectedTab;
    tp.Controls["WebBrowser1"].Text = string.Format("WebBrowser1", (tabControl1.SelectedIndex + 1).ToString());


    tp.Controls["wp"].Text = string.Format("wp", (tabControl1.SelectedIndex + 1).ToString());
}

...But, When I debug, and then click on pictureBox3(add tab button) it brings up a debug error: "object reference is not set to an instance of an object"... it doesnt even open a new tab any more hahaha... Any ideas?

thanks,
j.t.

Pedram Behroozi1-Nov-08 22:11

1-Nov-08 22:11

jay_t55 wrote:
tp.Controls["wp"].Text = string.Format("wp", (tabControl1.SelectedIndex + 1).ToString());

What is "wp"? Did you mean "wb"? Even with "wb" you'll get this error. wb is an object, as I told before, you have to set the object's Name property in tp.Controls, as you did in this line:

jay_t55 wrote:
tp.Controls["WebBrowser1"].Text = string.Format("WebBrowser1", (tabControl1.SelectedIndex + 1).ToString());

Clear this line:

jay_t55 wrote:
tp.Controls["wp"].Text = string.Format("wp", (tabControl1.SelectedIndex + 1).ToString());

When you're alone in the Dark, Fear will protect you...

jas0n231-Nov-08 22:30

1-Nov-08 22:30

thank you,

i have this:

TabPage page = new TabPage("Tab");
tabControl1.TabPages.Add(page);
WebBrowser wb = new WebBrowser();
wb.Dock = DockStyle.Fill;
wb.Name = "WebBrowser1";
page.Controls.Add(wb);
TabPage tp = tabControl1.SelectedTab;
tp.Controls["webBrowser1"].Text = string.Format("webBrowser1", (tabControl1.SelectedIndex + 1).ToString());


tp.Controls["webBrowser1"].Text = string.Format("webBrowser1", (tabControl1.SelectedIndex + 1).ToString());

..and it still gives the same error message Frown | :(

..totally weird :-p

Pedram Behroozi1-Nov-08 23:04

1-Nov-08 23:04

C# is Case-Sensitive which means 'A' is not equal to 'a'.
You named your wb, "WebBrowser1" (look at 'W', it's Capital) and told to tp that I have a control named "webBrowser1" (did you see 'w'?) and tp tried to find that but nothing found and got this error. Do you understand?

And why did you write this line twice?

jay_t55 wrote:
tp.Controls["webBrowser1"].Text = string.Format("webBrowser1", (tabControl1.SelectedIndex + 1).ToString());

tp.Controls["webBrowser1"].Text = string.Format("webBrowser1", (tabControl1.SelectedIndex + 1).ToString());

Clear one of them and change "webBrowser1" to "WebBrowser1" Smile | :)

When you're alone in the Dark, Fear will protect you...

jas0n232-Nov-08 1:37

2-Nov-08 1:37

Sorry about that muck up before. Smile | :)

Here is the code that I have as of your last post:

private void pictureBox3_Click(object sender, EventArgs e)
{
    TabPage page = new TabPage("Tab");
    tabControl1.TabPages.Add(page);
    WebBrowser wb = new WebBrowser();
    wb.Dock = DockStyle.Fill;
    wb.Name = "WebBrowser1";
    page.Controls.Add(wb);
    TabPage tp = tabControl1.SelectedTab;
    tp.Controls["WebBrowser1"].Text = string.Format("WebBrowser1", (tabControl1.SelectedIndex + 1).ToString());
}

Although it still tells me "object reference not set to instance of an object." and it points to the following line:

tp.Controls["WebBrowser1"].Text = string.Format("WebBrowser1", (tabControl1.SelectedIndex + 1).ToString());

Regards,
j.t.

Pedram Behroozi2-Nov-08 2:19

2-Nov-08 2:19

Oooooooooh,
Why didn't I notice before?
A WebBrowser control does NOT support the Text property!!!!
Laugh | :laugh:

But why did you get NullReferenceException?!! Confused | :confused:

I tried this code and did work for me well:

TabPage tp = new TabPage("Tab");
tabControl1.TabPages.Add(tp);
WebBrowser wb = new WebBrowser();

wb.Name = "WebBrowser1";
wb.Dock = DockStyle.Fill;

tp.Controls.Add(wb);

TabPage p = tabControl1.SelectedTab;
(p.Controls["WebBrowser1"] as WebBrowser).DocumentText = "Hello!";

When you're alone in the Dark, Fear will protect you...

jas0n232-Nov-08 3:05

2-Nov-08 3:05

You, Pedram, are a genius! Thank you so much for letting me pick at your brain! You have just solved my problem that i have had for the last 6weeks.

Regards,
j.t.

p.s.
if you would like to help me again, (just general advice), i need to create a "DocumentCompleted" event handler for the WebBrowser1 control. But I don't know how to do this programatically since there isn't one on my form design. Any advice would be much appreciated. Big Grin | :-D

best regards,
jason.

Pedram Behroozi2-Nov-08 5:16

Help With dataGridView Copy and Paste Feature

2-Nov-08 5:16

No problem Big Grin | :-D

jay_t55 wrote:
(just general advice)

Search Google, MSDN and CP articles for your will, they're more helpful and faster. If you got any problem, ask it here and if anybody can help, surely will help you. Good Luck Smile | :)

When you're alone in the Dark, Fear will protect you...

That Asian Guy1-Nov-08 9:02

That Asian Guy

1-Nov-08 9:02

I recently made a program for organizing marks and realized that it is slow and repetitive to type the same teacher's name 20 times for students in the same class.

I chose to add a little copy and paste feature when the user presses ctrl+v and the active cell becomes the contents of the clipboard.

Here is the snippet:

else if (e.Control && e.KeyCode == Keys.V)
            {
                if (Clipboard.ContainsText() &amp; dataGridView1.CurrentCell.OwningColumn.Index == 4)
                {
                    dataGridView1.CurrentCell.Value = Clipboard.GetText();
                }

                // If its the last row, add another row
                if (dataGridView1.CurrentCell.OwningRow.Index == nUD_counter)
                {
                    dataGridView1.Rows.Add();
                }
            }

What I'm having problems with is the last part, where I add another row (Microsoft made it so it would automatically add a row if the cell is edited by the user, but not programatically. The problem is that when I add the new row, it places it above the row which I just pasted info into such that:

col1       col2
a          b
<-blank line where I press ctrl+v->

It becomes

col1       col2
a          b
<-blank line where I press ctrl+v->
hi

How can I fix this? Also feel free to make suggestions on my code.

Thanks in advance.

modified on Saturday, November 1, 2008 5:23 PM

Re: Help With dataGridView Copy and Paste Feature

That Asian Guy1-Nov-08 14:47

That Asian Guy

1-Nov-08 14:47

I messed around with it a bit and ended up using SendKeys. I know this isn't the best method, but its the only one I tried so far that works.

Basically,

try
                    {
                        dataGridView1.BeginEdit(true);
                        String tempText = Clipboard.GetText();
                        tempText = tempText.Replace("{", "{{}");
                        tempText = tempText.Replace("}", "{}}");
                        tempText = tempText.Replace("{{{}}", "{{}");
                        tempText = tempText.Replace("(", "{(}");
                        tempText = tempText.Replace(")", "{)}");
                        tempText = tempText.Replace("+", "{+}");
                        tempText = tempText.Replace("^", "{^}");
                        tempText = tempText.Replace("%", "{%}");
                        tempText = tempText.Replace("~", "{~}");
                        SendKeys.Send(tempText);
                        SendKeys.Send("{DOWN}");
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message + "\n\nThe previous value was restored.", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
                        dataGridView1.CurrentCell.Value = previousValue;
                    }

Generate ordered sequence of 11 numbers

J-Cod3r1-Nov-08 7:57

J-Cod3r

1-Nov-08 7:57

Hi,

I need to generate an ordered sequence of numbers from 1 - 9. At no point is any number allowed to be used twice.
There are 81 combinations.
So it would look something like this:
123456789,
192345678,
193456782,
194567823,
195678234,...
and so on.

Thanks Confused | :confused:

Re: Generate ordered sequence of 11 numbers

Luc Pattyn1-Nov-08 8:40

Luc Pattyn

1-Nov-08 8:40

Hi,

that has been asked and answered here[^].

And there are 9! permutations (that's 362880, not 81).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Fixturized forever. Confused | :confused:

datatable and datareader

Zeyad Jalil1-Nov-08 6:58

Zeyad Jalil

1-Nov-08 6:58

i have a datatable contain 3 columns(id,type,price);
and a sqldatareader have a 1 column(name);

i want to add the column(name) from sqldatareader to datatable
using datacolumn,,
please how I can do that??

thanks all

How can we create a plugin for IE with C# ?

Mohammad Dayyan1-Nov-08 5:32

Mohammad Dayyan

1-Nov-08 5:32

Hi all.
I wanna create a plugin for Internet Explorer with C# ?
How can I do it ?

Thank you

Re: How can we create a plugin for IE with C# ?

Pedram Behroozi1-Nov-08 6:21