Need help on this for my Project

Question

2.00/5 (1 vote)

See more:

C#

private TabItem AddTabItem()
       {
           TabItem tab = new TabItem();



               int count = _tabItems.Count;
               for (int i = 0; i < count; i++)
               {

                   // create new tab item


                   tab.Header = string.Format("Tab {0}", count);
                   tab.Name = string.Format("tab{0}", count);
                   tab.HeaderTemplate = tabDynamic.FindResource("TabHeader") as DataTemplate;

                   WebBrowser wb = new WebBrowser();
                   tab.Content = wb;
                   wb.Source = new Uri("http://www.google.com");


                   // insert tab item right before the last (+) tab item
                   _tabItems.Insert(count - 1, tab);
               }


           return tab;


       }

So basically i just need a way on how to get the new instantiated "wb" variable to be used outside this method. this line of code is for my internet browser program that supports multiple tabs. the good news is that it works the bad new is that each tab on my browser contains the same link, and what i mean by that is every tab is identical like if i log in to my Facebook on one tab it will be the same for the other tab, i just need a way to turn each tab to an individual tab. I have tried making the WebBroswer instance variable wb as a global variable but hats what causes the problem, plus i cant assign my Refresh,Forward and Backward buttons to this variable because its inside this method. So i thought that its either i find a way to make the wb variable to become global (if possible) so that i could assign my buttons like refresh etc,. with it being on its own individual tab. This is the last step i need to finish my work :( please Help ASAP i only got a fwe hours left

Posted 15-Jun-14 5:14am

Member 10885326

Add a Solution

Comments

[no name] 15-Jun-14 11:29am

Each tab's web browser control has the same link because you are setting them all to have the same link. It's unclear from your posting why you think that they are all linked together. You *could* have an array or List of web browser controls if that would make you feel better about it. But I am not sure that you have an actual problem as yet.

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Debabrata_Das · Answer 1 · 2014-06-15T05:31:00

Solution 1

Hello friend,
If you want to access wb object from the method where AddTabItem() is called, then I would suggest to declare the wb object from calling method and pass the object as parameter to AddTabItem() function.

In this way, you'll be able to access wb from outside of this method.
- DD

Posted 15-Jun-14 5:31am

Debabrata_Das

Comments

Member 10885326 15-Jun-14 12:08pm

thank you for replying, i apologize i don't quite get what you mean. my apologies sir I'm still kind of new to C#

OriginalGriff · Answer 2 · 2014-06-15T05:35:00

C# doesn't have Global variables (though the static keyword and the Singleton pattern do give you ways to emulate them) - generally, you don't need them.

Instead, just move the declaration:

C#

private WebBrowser wb = new WebBrowser();
private TabItem AddTabItem()
          {
                TabItem tab = new TabItem();
                int count = _tabItems.Count;
                for (int i = 0; i < count; i++)
                {
                     // create new tab item
              tab.Header = string.Format("Tab {0}", count);
                    tab.Name = string.Format("tab{0}", count);
                    tab.HeaderTemplate = tabDynamic.FindResource("TabHeader") as DataTemplate;
 
                    tab.Content = wb;
                    wb.Source = new Uri("http://www.google.com");
                    // insert tab item right before the last (+) tab item
                    _tabItems.Insert(count - 1, tab);
                }
            return tab;
        }

And wb will be available throughout the class (but not outside it, which is a good thing, honest!)

phil.o · Answer 3 · 2014-06-15T08:47:00

You get the same webbrowser on all your tabs because this is exactly what your code is written to do.
You iterate from zero to your tabs count, and at each step insert in last position a new Tab with the same webbrowser than on every other tab.

You should really put a breakpoint at the beginning of your AddTabItem() method and run it in debug mode; you would instantly understand what is going on.

Finally, if you need to keep several webbrowsers, one for each tab, you need to declare a collection of them; you could use an Array, a List, a Dictionary, whatever, but you need a collection.
Examples:

C#

private List<WebBrowser> _webBrowsers = new List<WebBrowser>();
// OR
private Dictionary<int, WebBrowser> _webBrowsers = new Dictionary<int, WebBrowser>();

But anyway the priority here is to correct your AddTabItem() method. Debug it, execute it line by line, and check for the values of your variables at each step. The solution will come easily after that, and you will have learned an important part of a developer's life : debugging.

Need help on this for my Project

3 solutions

Solution 1

Solution 2

Solution 3

Add your solution here

Preview 0