Re: getting the selectedItem in a checkedListBox from another method - C# Discussion Boards

Re: (X^2)(4sinY)

0x3c05-Sep-09 8:36

0x3c0

5-Sep-09 8:36

You can do it in the normal way:

double Z = (X * X) * (4 * Math.Sin(Y));

OSDev

Re: (X^2)(4sinY)

Henry Minute5-Sep-09 8:40

Henry Minute

5-Sep-09 8:40

FYI: The '^' operator is Bitwise XOR in C#.

Henry Minute

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Re: (X^2)(4sinY)

0x3c05-Sep-09 8:46

0x3c0

5-Sep-09 8:46

Further FYI: The Math.Pow operation raises something to a power.

OSDev

Re: (X^2)(4sinY)

Henry Minute5-Sep-09 9:47

Henry Minute

5-Sep-09 9:47

Extended Further FYI: The Math.Ker method reinforces the Math.Pow method.

Re: (X^2)(4sinY)

Luc Pattyn5-Sep-09 11:10

Luc Pattyn

5-Sep-09 11:10

FYI^3
... by using logarithmic and exponential functions, making it rather slow and slightly inaccurate for a simple square or cube or square root.

Smile | :)

Luc Pattyn

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Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Re: (X^2)(4sinY)

See_Sharp5-Sep-09 12:56

See_Sharp

5-Sep-09 12:56

While you're at it you can also try to manually calculate Taylor series approximations to several decimal places to cut down on processing time? lol

getting the selectedItem in a checkedListBox from another method

Twyce5-Sep-09 5:11

Twyce

5-Sep-09 5:11

I am trying to access checked Items in a checkedListbox from another method.Problem is, using "Selecteditem" and "SelectedIndex" does not work, it appears as if there aren't any items selected from the list. is there any other way I can read from the CheckedBoxList list or What am i doing wrong? Please help

Re: getting the selectedItem in a checkedListBox from another method

Henry Minute5-Sep-09 5:27

Henry Minute

5-Sep-09 5:27

Without seeing your code it is not easy to offer any suggestion. Normally just using myCheckedListBox.SelectedIndex should work.

Please post the code where you are trying to do it, so that people can try to help you.

Re: getting the selectedItem in a checkedListBox from another method

DaveyM695-Sep-09 5:35

DaveyM69

5-Sep-09 5:35

Is this WinForms? If so, are you getting confused between SelectedItems and CheckedItems?

CheckedListBox.CheckedItemCollection checkedItems = checkedListBox.CheckedItems;

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
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Re: getting the selectedItem in a checkedListBox from another method

Henry Minute5-Sep-09 6:29

Henry Minute

5-Sep-09 6:29

Good spot!!

Re: getting the selectedItem in a checkedListBox from another method

Swetha Srinivasan6-Sep-09 18:52

Swetha Srinivasan

6-Sep-09 18:52

Lets name the checklistbox as table list.whenever an item is checked or unchecked just add them to a data table(_selectedTables).

<br />
 private void tableList_ItemCheck(object sender, ItemCheckEventArgs e)<br />
        {            <br />
            string names = tableList.GetItemText(tableList.Items[e.Index]);<br />
           <br />
            CheckState currentState=e.NewValue;<br />
            <br />
            if (currentState.ToString() == "Checked")<br />
            {<br />
                DataRow newRow = _selectedTables.NewRow();<br />
                _selectedTables.Rows.Add(newRow);<br />
                newRow["Table"] = names;<br />
            }<br />
            else<br />
            {<br />
                DataRow[] dr = _selectedTables.Select("Table = '" + names + "'");<br />
                if (dr.Length > 0)<br />
                    _selectedTables.Rows.Remove(dr[0]);<br />
            }<br />
        }<br />

And then use this method to retrieve the selection

public DataTable ReturnSelectedTables<br />
       {<br />
           get<br />
           {<br />
               return _selectedTables;<br />
           }<br />
       }

Hope this helps you.

Help for searching in phonebook

sh.alamdari5-Sep-09 4:25

sh.alamdari

5-Sep-09 4:25

Hi All
can anyone help me for searching in phone book? I use text file for saving data.
I want to find all names that contains the input character. I dont now how do it.
pleas give me a solution.

Re: Help for searching in phonebook

Richard MacCutchan5-Sep-09 4:47

Richard MacCutchan

5-Sep-09 4:47

First thing you will have to do is to read the data from the file. You may want to read line by line looking for the characters in question. Alternatively you could read the entire file into some sort of List/Array/Dataset etc and then use the methods of those objects to search. Take a look at the foregoing classes to get some ideas of what is possible.

Re: Help for searching in phonebook

Arindam Sinha5-Sep-09 5:18

Arindam Sinha

5-Sep-09 5:18

Which version of Windows Mobile platform you are using?
I think you can try with ContactCollection sample in MSDN [^]if it gives you any hint.

Regards,
Arindam Sinha
MyBlog - http://arindamsinha.wordpress.com/
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2WebBrowsers like in 2 Apps

AmirNapster5-Sep-09 4:18

AmirNapster

5-Sep-09 4:18

I want to create an application that show 2 webbrowsers control in one app like they run in 2 app.
When i use webbrowsers in 2 applicaion i think they have session but in one app it is same. How i can create 2 Tab in my app with 2webbrowsers with separate sessions?

Re: 2WebBrowsers like in 2 Apps

Arindam Sinha5-Sep-09 5:21

Arindam Sinha

5-Sep-09 5:21

amir19 wrote:
create an application that show 2 webbrowsers control in one app

I am not very clear about your requirement. Are you creating any Windows application where you want to have two embeded browser controls? Then it's possible.
Anyway, please clearly specify.

Regards,
Arindam Sinha
MyBlog - http://arindamsinha.wordpress.com/
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Re: 2WebBrowsers like in 2 Apps

AmirNapster5-Sep-09 5:30

AmirNapster

5-Sep-09 5:30

Yes it is correct. I created two webbrowsers in a windows application. When i open same site with these ones they have same session. I want to they behave like when they are in two applications. I opened my app two times and browsers had separate sessions and cookies.

Re: 2WebBrowsers like in 2 Apps

Arindam Sinha5-Sep-09 7:05

Arindam Sinha

5-Sep-09 7:05

Amir,
Now your problem is clear to me..But it seems to be difficult one D'Oh! | :doh:

I found few things which might consider for your design.
1. The issue you are mentioning is kinda feature of your browser. I think you are using some IE with version < 8. This similar session feature could be referred as SessionMerging. IE 8.0 is coming with a feature where you can create some new sessions (please look into this article[^]). But I am not yet sure how you are going to force that new session. Anyway, keep searching on that.
2. There might be very "optimistic" approach of creating your next WebBroser from a separate process. if you can achieve (not very sure on this) this then this might help.

Other thing, it's better to have another design keeping this limitation in mind.
Or wait for someone who can help you better. Smile | :)

Regards,
Arindam Sinha
MyBlog - http://arindamsinha.wordpress.com/
Please give your feedback on this message using rating.

Re: 2WebBrowsers like in 2 Apps

Not Active5-Sep-09 6:21

Not Active

5-Sep-09 6:21

It's considered bad manners around here to post your message on multiple forums. Pick one and stick with. Delete the other since it has no responses.

only two letters away from being an asset

Dynamic Image at Crystal Report 11

Syed Shahid Hussain5-Sep-09 4:17

Syed Shahid Hussain

5-Sep-09 4:17

Hi,

I want to save an image in database and then display it on the crystal report;

it is possible that crystal allow us to display image from data base??? OMG | :OMG:

dive me a short hint for doing that task. Cool | :cool:

Thanks

Syed Shahid Hussain

entering datas in dropdownlist

atiskumar5-Sep-09 3:09

atiskumar

5-Sep-09 3:09

hello frnds,
i am a beginner in c# .i was doing a task in which i had a string of datas like "a,b,c,d,e" and to which i have to enter in a dropdown list when i click a button .........
can anyone help me out in this problem.....plzzzzzzzz.....

Re: entering datas in dropdownlist

Manas Bhardwaj5-Sep-09 3:25

Manas Bhardwaj

5-Sep-09 3:25

1.) Split [^]the string

string _data = "a,b,c,d,e";
string [] _splittedData = _data.Split(new Char [] {','});

2.) Loop through the array and add it to the dropdownlist.

foreach(string _stringData in _splittedData)
{
    MyDropDownList.items.add(_stringData);
}

Btw, this is very basic and you should rather buy a good book on C# and start reading that. This would help you to become a better programmer. Rose | [Rose]

Manas Bhardwaj
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Amount of items in List<string> has changed while running a loop</string>

softwarejaeger5-Sep-09 2:34

softwarejaeger

5-Sep-09 2:34

Hello,

i have a problem. i have a List<string> and in another Thread a Loop which is running and checking the List (Foreach-Loop). Now, the loop is running and a new item is added to the list - > i get an Exception, and my application breaks!

So, how to solve this problem?

Re: Amount of items in List has changed while running a loop

OriginalGriff5-Sep-09 2:47

OriginalGriff

5-Sep-09 2:47

You will have to make it "thread safe" (Google will help here), but basically you need to lock your list before traversing it, and also before attempting to add to it. See here for starters[^]

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Application Trial And StreamRead/Writer

Ben Magee5-Sep-09 1:34

Ben Magee

5-Sep-09 1:34

Hi,

Im making a trial of one of my applications, and i want the user to only be able to run the application 5 times..

now, my original plan had been:

//WRITE VALUE TO TRIAL FILE
            int numint = 1;
            TextWriter trialWrite = new StreamWriter("oote.oost");
            trialWrite.WriteLine(numint+1);
            trialWrite.Close();

So it would add +1 to the value of numint each time the application loads, but its not working right, and it doenst add to the number inside the text (oost) file in question.

I also tried +1 but that doesnt work either.

Its in the form_load event.

Can anyone tell me how to add +1 to the value of the number already in my text file?

thanks,
Ben.

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