Re: custom progressbar, problem updating it. - C# Discussion Boards

Mikke_x17-Sep-04 7:14

17-Sep-04 7:14

Hi! Thanks alot! Both to Heath and Steven!
Will try this first thing monday morning!

The Joel on Software text gave som intresting, and fun!, reading.

/ Mikke

posting data to another url using webclient

Abraham Durairaj17-Sep-04 0:31

Abraham Durairaj

17-Sep-04 0:31

Hi,

Im writing a component for posting data to a webserver.

http://www.domainname.com/fire/incoming.asp?user=xxxx&pass=xxxx&amount

I tried using HttpWebrequest & Webclient to post data but it is returning an error

if i paste the url in the browser it is working properly

The code goes here
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

string User = "test3";
string Pass = "test3";

string amount = Server.UrlEncode(TextBox2.Text);
string MobileNumber = "91"+TextBox1.Text;

string postData = ("login="+User);
postData += ("&pass="+Pass);
postData += ("&amount="+amount);

string uriString = "http://www.domainname.com/fire/incoming.asp";

WebClient myWebClient = new WebClient();
myWebClient.Headers.Add("Content-Type","application/x-www-form-urlencoded");

byte[] byteArray = Encoding.ASCII.GetBytes(postData);
byte[] responseArray = myWebClient.UploadData(uriString,"POST",byteArray);

lblStatus.Text = Encoding.ASCII.GetString(responseArray);

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Can someone help .....

Thanks in advance

Abraham

MaskEdit

jzb17-Sep-04 0:09

jzb

17-Sep-04 0:09

I want to do a maskedit control that it like powerbuilder or delphi's maskedit
control.

Re: MaskEdit

Heath Stewart17-Sep-04 6:37

Heath Stewart

17-Sep-04 6:37

Great...what's your question?

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Software Design Engineer
Developer Division Sustained Engineering
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Graphical programming

Member 62427317-Sep-04 0:06

Member 624273

17-Sep-04 0:06

Hi all,

I would like to program in c# a graphical design tool like ms visio. I need the functionalities of component inserting, deleting, resizing, moving, component connecting and so on. Someone knows sample codes or tutorials?

Thx

Re: Graphical programming

Colin Angus Mackay17-Sep-04 1:10

Colin Angus Mackay

17-Sep-04 1:10

I would say that is more of an OO thing than an algorithmic thing.

For example, you have two classes called DrawingSurface and Component.

DrawingSurface has a collection of Components

To Insert you instantiate a component (Component theComponent = new Component()) and add it to the DrawingSurface (DrawingSurface.Add(theComponent);)

To Delete to remove the component from the DrawingSurface (DrawingSurface.Remove(theComponent);)

To Resize you would have properties on the component like Width and Height. You might trigger an event on the setters of these properties that the DrawingSurface would handle to redraw the diagram.

To Move you would have position properties on the component like X and Y. And again in the setters you would probably fire off an event that the drawing surface uses to redraw the display.

And so on and so forth.

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custom progressbar, problem updating it.

misterbear16-Sep-04 23:50

misterbear

16-Sep-04 23:50

I've tried to create a custom progressbar to display while I'm doing some intensive work. I also want to update a string of what is currently going on, like an installer tells the user what file is currently being copied, and so on...
So, I have a form that I display and then call methods like

<br />
MyProgressForm.setProgressText(string)<br />
MyProgressForm.setProgress(int)<br />

but the GUI components (a label for the text and a custom-painted control for the progress) won't get updated, I guess because there is too much work going on...

So my question is, how do I force these to be updated?
What is the best way to solve this?

thankful for some help, I can't seem to figure it out ...

Re: custom progressbar, problem updating it.

Stefan Troschuetz17-Sep-04 2:47

Stefan Troschuetz

17-Sep-04 2:47

Calling the Update method of your ProgressBar after changing its Value or Text should solve the problem.

www.troschuetz.de

Re: custom progressbar, problem updating it.

Tim Kohler17-Sep-04 9:49

Tim Kohler

17-Sep-04 9:49

You should be doing the lengthy processor intensive work in a thread seperate from the main gui thread. Start a worker thread and do your lengthy work there. Update the progress bar's values from the worker thread. The main window thread will then keep your bar painted properly.

correl function for c#

tradingsharp16-Sep-04 22:56

tradingsharp

16-Sep-04 22:56

Hi

I am searching for a correl function like the one i can use in excel with =CORREL(A1:A10;B1:B10).

Nothing complicated I will just know the correlation of two arrays.

I have googled but wasn't successful. Maybe somebody have a hint where to search.

Thanks

Re: correl function for c#

leppie16-Sep-04 23:46

leppie

16-Sep-04 23:46

Just search for general statistics formulas IIRC

std deviation = ((n1 - avg )^2 + (n2 - avg )^2 + ... )^1/2

or something like that Smile | :)

^{top secret
Download xacc-ide 0.0.3 now!
See some screenshots}

Reg. Posting data to other url

Abraham Durairaj16-Sep-04 18:50

Abraham Durairaj

16-Sep-04 18:50

Im posting some data to this URL.

Can someone tell me where i can post data to this url like this.

string uriString = "http://domainname.com/incoming.asp";

WebClient myWebClient = new WebClient();
myWebClient.Headers.Add("Content-Type","application/x-www-form-urlencoded");

(or )

do we need to post only to

string uriString = "http://domainname.com/";

WebClient myWebClient = new WebClient();
myWebClient.Headers.Add("Content-Type","application/x-www-form-urlencoded");

Can anyone help me how to go about this?

Abraham

How can I add , update , delete a row

skywen16-Sep-04 16:51

skywen

16-Sep-04 16:51

in DataGrid of WinForm Use C#?

thanks!!

Re: How can I add , update , delete a row

sreejith ss nair16-Sep-04 23:59

sreejith ss nair

16-Sep-04 23:59

hi,

Check this site for your queary.

www.datagridgirl.com

Section head : article

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Re: How can I add , update , delete a row

Kodanda Pani17-Sep-04 21:06

Kodanda Pani

17-Sep-04 21:06

Hi skywen,

When you are using Datagrid control on winforms by default it allows you to add, delete , update rows during the runtime. If you are using a Data grid webserver control you need to use footer template to create this functionality.

Thanks
SGS

How do i force a control to only exist in the component tray?

FocusedWolf16-Sep-04 15:59

FocusedWolf

16-Sep-04 15:59

One suggestion i found was to extend System.ComponentModel.Component

My problem is that thing doesnt have paint or other necessary visual functions. Any other ways?

...My situation is a control that is like a tooltip not dedication to the form but considers the desktop as it's parent... what it boils down to is i want to make it a component tray restricted control, but give it a custom UI editor so someone can view changes to the control.

Server application

qigong516-Sep-04 13:37

qigong5

16-Sep-04 13:37

Hi all,

I'm hoping someone can point me in the right direction.

I would like to write a server application that takes data from various elements within a network. These are UNIX based systems which basically will be spitting alarming information at m at a billion miles an hour. Consequently, I'm establish communications with the sending devices. I only want to receive the information they are throwing at me. I don't need to be concerned with the format of the data.

Has anyone suggestions on how best to implement a server type application to recieve the data from 10+ uniques device elements without having to establish a link first. All devices output on the same port number as well to throw in another problem.

Any advice, suggestions would be most appreciated.

Thanks,

Aaron

Re: Server application

Salil Khedkar20-Sep-04 1:18

Salil Khedkar

20-Sep-04 1:18

I think if you know that simultaneous clients to your server would not exceed 10 you can implement this with a TCP or UDP listener. On each new connection request, spawn a new thread for receiving data. After completion close the socket and thread. Wink | ;)

If your number of simultaneous clients are going to exceed that 10, you can think about asynchronous connections.

See socket/tcplistener/udplistener classes and examples in MSDN.

Re: Server application

qigong516-Sep-04 16:57

qigong5

16-Sep-04 16:57

Sorry - I might have been a bit vague - the data is coming from UNIX clients....

The data is transmitted over a network to an IP I can specify. It will just spit data over a UDP connection to where ever I tell it, but it is not controlled.

I guess what I need is a UDP listener.... hmm

Re: Server application

Tim Kohler17-Sep-04 9:57

Tim Kohler

17-Sep-04 9:57

Check out some of the socket example here in the networking section for C#. You will basically need to set up an asynchronous socket listener on the port # you want the UNIX clients to send messages to. It's a good thing they all send on the same port as that means you will only need to listen on one.

In addition you'll need to format your application level messages to make sure you get a whole message before doing something with it. I suspect your UNIX clients will terminate each individual transmission with some sort of control character. So on your end you'll need to receive until you read in that control char.

Hope this helps!

ComboBox within a Listbox

pkunkrocker16-Sep-04 13:19

pkunkrocker

16-Sep-04 13:19

How do you create a multicolumn listbox with comboBox's within the columns? I am looking for a control that is similar to one such as the design editor in Microsoft Access or Enterprise Manager. Is there a built in control already created for this?

While using "Spy++" these controls have been called "OGrid" and "DimensionDataCtrl". I am been unable to find a library/assembly with either of these controls.

Thanks.

Re: ComboBox within a Listbox

sreejith ss nair16-Sep-04 20:29

sreejith ss nair

16-Sep-04 20:29

hi,

I can suggest you an article which deal these sort of customization.

http://www.codeproject.com/cs/miscctrl/ListViewCellEditors.asp

Blush | :O

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S r e e j i t h N a i r
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Simple Console App.

Milan200716-Sep-04 13:12

Milan2007

16-Sep-04 13:12

There is probably a very simple reason for this. Unsure | :~

I wrote a simple application for a simple assignment. I am having a problem understanding how doubles are subtracted. Here is a code sample:

<br />
double paid = 50.00, owed = 39.67, remainder = 0.0; <br />
remainder = paid - owed;<br />
<br />
Console.Write(remainder);<br />
Console.ReadLine();<br />

This results in a value of 10.33 being printed to the screen. However, if you step into the program you will see that remainder is actually equal to 10.329999999999998.

Can anyone explain to me how C# comes up with this value?
Thanks in advance for your help!

Re: Simple Console App.

Heath Stewart16-Sep-04 13:29

Heath Stewart

16-Sep-04 13:29

The binary representation of a fraction is an approximation. Using float or double you'll never get a straight answer, but an approximation.

This posting is provided "AS IS" with no warranties, and confers no rights.

Software Design Engineer
Developer Division Sustained Engineering
Microsoft

[My Articles]

Copy Nonstandard Type to Clipboard

McClamm16-Sep-04 11:17

McClamm

16-Sep-04 11:17

Hello,
I've been trying like crazy to figure out how to copy an object of a custom type to the Clipboard via Clipboard.SetDataObject() and then retrieve it with Clipboard.GetDataObject().

I've tried everything I can think of. I declare a DataObject, made out of my custom object, and give it a format name, and send it to the clipboard. Then I bring it back from the clipboard, as an IDataObject, use GetDataPresent(*format name", true), and it says that the data is present. But when I use GetData, it returns null! What is going on here?

There are many demos about how to use the clipboard with strings and bitmaps but that's pretty useless. What's the point of C#'s clipboard support if all you can do is transfer bitmaps?

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