C# for beginners - C# Discussion Boards

How is the algorithm to compare a "lot" of strings, tell z frequency and tell which similar strings are found in which index?

CoderForEver21-Dec-09 5:39

CoderForEver

21-Dec-09 5:39

I was working on conflation .... and I have 25 text boxes .. I collected this strings on an array ... But It becomes a headache for me to compare the 25 strings , and if there are similar strings I want to know how many different strings are there..... the frequency and in which index they are found ... I couldn't have the idea of the algorithm to do that ... Please just show me the algorithm and I will work out the rest my self ...

Thank you

Re: How is the algorithm to compare a "lot" of strings, tell z frequency and tell which similar strings are found in which index?

Richard MacCutchan21-Dec-09 6:04

Richard MacCutchan

21-Dec-09 6:04

Maybe you should sort them first and then your comparisons will be somewhat easier, as you can find groups without having to do repeated compares.

Re: How is the algorithm to compare a "lot" of strings, tell z frequency and tell which similar strings are found in which index?

CoderForEver21-Dec-09 6:43

CoderForEver

21-Dec-09 6:43

Depending on what am going to sort them ? .... is it by name .. or by wat?

Re: How is the algorithm to compare a "lot" of strings, tell z frequency and tell which similar strings are found in which index?

Richard MacCutchan21-Dec-09 6:51

Richard MacCutchan

21-Dec-09 6:51

CoderForEver wrote:
Depending on what am going to sort them ? .... is it by name .. or by wat?

No idea! It's your data so you are the one who has to decide how you want the information ordered. What are your criteria for similarity and difference?

Re: How is the algorithm to compare a "lot" of strings, tell z frequency and tell which similar strings are found in which index?

CoderForEver21-Dec-09 6:57

CoderForEver

21-Dec-09 6:57

the similarity is just checking z words i.e checking the 25 strings ... if string1 and string 2 are the same then string 2 and 3 and soon

Re: How is the algorithm to compare a "lot" of strings, tell z frequency and tell which similar strings are found in which index?

Richard MacCutchan21-Dec-09 9:03

Richard MacCutchan

21-Dec-09 9:03

CoderForEver wrote:
the similarity is just checking z words

Then I guess you sort on that ...

Re: How is the algorithm to compare a "lot" of strings, tell z frequency and tell which similar strings are found in which index?

Alan Balkany21-Dec-09 9:55

Alan Balkany

21-Dec-09 9:55

Using a NameValueCollection will do the sorting for you. If the string isn't in the collection, insert it with a count of 1. If it IS there, increment the count.

The collection will instantly tell you how many different strings there are with the Count member.

C# for beginners

APolancoS21-Dec-09 5:31

APolancoS

21-Dec-09 5:31

Hi everybody
I'm new using programming languages. I took a basic course of C++ in college. But most of my friends told me C# is more used than C++. I could prove it checking some nice projects made for CS master students.

I wanna learn everything, specially windows app. Please, give me some advices to start up. I've found some manuals and tutorials but they are so advanced for me. please put me in the right track.

Thanks!!!

Re: C# for beginners

EliottA21-Dec-09 5:33

EliottA

21-Dec-09 5:33

Any book that has beginners and C# in the title is designed for you. If you understood the core concepts of C++, then C# shouldn't be all too difficult for you. Most people would fine C++ to be entirely more complicated then C#, so you have a slight advantage over them. Go to a bookstore, or library, pick up a beginners book and work through it.

Check out the CodeProject forum Guidelines[^]
The original soapbox 1.0 is back![^]

Re: C# for beginners

APolancoS21-Dec-09 16:15

APolancoS

21-Dec-09 16:15

Thanks

Re: C# for beginners

Richard MacCutchan21-Dec-09 6:06

Richard MacCutchan

21-Dec-09 6:06

Charles Petzold's .Net Book Zero[^] is a great place to start with C#, and gives enough grounding for you to get familiar with the basics of the language and the .NET concepts.

Re: C# for beginners

V.21-Dec-09 20:38

21-Dec-09 20:38

In addition of your book in case you get stuck:

- MSDN[^]
- CP[^]
- Google is your friend[^]

good luck !

V.

Stop smoking so you can: Enjoy longer the money you save.
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Re: C# for beginners

Rob Philpott21-Dec-09 21:57

Rob Philpott

21-Dec-09 21:57

I'd take a look at CLR via C# by Jeffrey Richter. This is a brilliant book, albeit not that simple in places, but if focuses not just on C# but on .NET itself.

C# is meaningless without the context of .NET so you need to know both.

Regards,
Rob Philpott.

Select a perticular value in combo box

NarVish21-Dec-09 5:05

NarVish

21-Dec-09 5:05

Hi,
I've a combo box, which contains Sites' names(data comes from database). One of the item is "Create new site". I would like to keep the "Create new site" item at the top of all items. I tried to accomplish this by setting SelectedValue to 0, But it didn't work. Below is my code. Please guide to solve this issue. Thanks in advance.

DataTable dtSite = new DataTable();
DataRow drNewAction;

dtSite = objSites.SelectSites();
drNewAction = dtSite.NewRow();
drNewAction["SiteKey"] = 0;
drNewAction["SiteName"] = "Create new site";
dtSite.Rows.Add(drNewAction);

comSiteList.DataSource = dtSite;
comSiteList.DisplayMember = "SiteName";
comSiteList.ValueMember = "SiteKey";
comSiteList.Tag = "Loaded";
comSiteList.SelectedValue = 0;

Re: Select a perticular value in combo box

dbrenth21-Dec-09 7:51

dbrenth

21-Dec-09 7:51

Not sure I understand what you mean by "top of all items". But ComboBoxes will display the list in the exact order they are added to the list - unless you set the sorted property. Even if you have a sorted property you can trick the combo box by starting the item text out with a character that has an ascii value less than 65, like a space or a perenthesis. This will keep the item you want at the top of the list.

Brent

How can i make shortcut keys by using code

inayat basha21-Dec-09 4:49

inayat basha

21-Dec-09 4:49

how can i make shortcut keys in code for examole if i press F1 then some page has to redirect or open. can any one help me plzzz

Regards,
S.Inayat Basha.

Re: How can i make shortcut keys by using code [modified]

robbrad21-Dec-09 5:14

robbrad

21-Dec-09 5:14

http://www.devasp.net/net/articles/display/728.html[^]

Edit: This shows you how to map keys to certain buttons (Not tested).

modified on Monday, December 21, 2009 11:21 AM

Re: How can i make shortcut keys by using code

Luc Pattyn21-Dec-09 5:32

Luc Pattyn

21-Dec-09 5:32

Hi,

there are two ways:

1.
the easy one: give your Form a MainMenu or MenuStrip and make sure the actions you want are present in the menus; all it takes to create shortcuts is setting their corresponding ShortCut property.

2.
the harder way (also for the user as he has no clue what shortcuts are available): let your Form preview the keyboard (Form.KeyPreview) and give it a KeyDown handler. No need to process the keys for each individual Control on the form!

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Update web.config at run time [modified]

treuveni21-Dec-09 4:13

treuveni

21-Dec-09 4:13

Hi,

I'm trying to update my webconfig at runtime throught the .cs file.
This us the code i want to edit:

<br />
<identity impersonate="true" userName="SomeUser"<br />
      password="Password"/><br />

I want to chage the value off "SomeUser" and "Password" to veriables such as,
txtserName.text and txtPassword.text.

Can i do it?

Please help... Frown | :(

modified on Monday, December 21, 2009 10:21 AM

Re: Update web.config at run time

treuveni21-Dec-09 20:51

treuveni

21-Dec-09 20:51

Can someone please help me with this?

Text Cahnging Whith BarCode Reader in TextBox C#

Thaer Hamael21-Dec-09 2:09

Thaer Hamael

21-Dec-09 2:09

Hi All

How do I know if the text(string) is written in the in TextBox in C# Windows Application
Is From Barcode Reader or From user of the system .

thanks Rose | [Rose]

Thaer

Re: Text Cahnging Whith BarCode Reader in TextBox C#

Md. Marufuzzaman21-Dec-09 3:06

Md. Marufuzzaman

21-Dec-09 3:06

Could you clarify your question with some more detail...

Thanks
Md. Marufuzzaman

Don't forget to click [Vote] / [Good Answer] on the post(s) that helped you.

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Re: Text Cahnging Whith BarCode Reader in TextBox C#

Keith Barrow21-Dec-09 3:09

Keith Barrow

21-Dec-09 3:09

Depending upon the code base you have, you probably can't directly, as once the the barcode is in the text box, it is just a string.

You have a couple of options, depending upon why you care that the reader is the source.

1. Record the fact the barcode has been read by a reader when the reading has been done (Reliable)
2. Check that the textbox text is in the form of a barcode number, assuming you have one. This isn't reliable, as the user could enter the number directly or it could come from another source.

CCC solved so far: 2 (including a Hard One!)
37!?!! - Randall, Clerks

Re: Text Cahnging Whith BarCode Reader in TextBox C#

DJ Matthews21-Dec-09 3:40

DJ Matthews

21-Dec-09 3:40

Some barcode scanners have the ability to add a delimiter character to the start or end of the string the read will return.

You can then check for this delimiter character to see if it came from your reader.

Socket Error: A non-blocking socket operation could not be completed immediately

Harvey Saayman21-Dec-09 1:52

Harvey Saayman

21-Dec-09 1:52

Hey guys

As you may or may not know I've been busy working on a scalable asynchronous TCP server... After previous suggestions here in the forums I've succeeded more or less Smile | :)

My only problem right now is that sometimes, usually when I try to send a packet to a 2nd or 3rd client (my server is just echoing at the moment) I get an exception:
A non-blocking socket operation could not be completed immediately D'Oh! | :doh:

Googling around it seems that this is a non fatal exception and quite normal for asynchronous TCP communications...

My question is how should I handle this?

Thanks

Harvey Saayman - South Africa
Software Developer
.Net, C#, SQL
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