Re: Serialport from a remote server - C# Discussion Boards

Re: calling and displaying url in the same page.

Peace ON14-Jul-10 1:59

Peace ON

14-Jul-10 1:59

You can use frame to load the url.
Just try following code on click of left column url...

<FRAME src="[url that has been clicked from left column]">

You do not need to think it in .net context. You can do it simply
using frame as shown above.

You can do it dynamically using javascript.

HTH

Jinal Desai - LIVE
Experience is mother of sage....

Re: calling and displaying url in the same page.

Prosanta Kundu online14-Jul-10 2:22

Prosanta Kundu online

14-Jul-10 2:22

Create a left page say "left.aspx" and set target attribute for anchor element with the name of right frame

XML

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="left.aspx.cs" Inherits="left" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
<a href="http://www.google.com" target="right">Google</a>
<a href="http://www.w3schools.com" target="right">W3Schools</a>
    </div>
    </form>
</body>
</html>

create default page with frame and give a name for right frame

XML

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<frameset cols="10%,*">
<frame name="left" src="left.aspx" />
<frame name="right" src="about:blank" />
</frameset>
</html>

Re: calling and displaying url in the same page.

dabuskol19-Jul-10 0:37

dabuskol

19-Jul-10 0:37

Thanks it works in .NET

Dabsukol

change cell color of gird view on click event of CELL

220814-Jul-10 1:14

2208

14-Jul-10 1:14

using JavaScript i want to change color of cell of asp.net grid view

i want once cell click by user it should became red
and if user click same cell again it should became white

how is that possible plz guide me

Regards

Re: change cell color of gird view on click event of CELL

Prosanta Kundu online14-Jul-10 1:31

Prosanta Kundu online

14-Jul-10 1:31

Add OnRowDataBound Event in your gridview

XML

OnRowDataBound="grvDriverList_RowDataBound"

Define RowDataBound event in cs page

protected void grvDriverList_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.Cells[0].Attributes.Add("onclick","toggleBGColor(this);");
        }
    }

Add javascript event

JavaScript

function toggleBGColor(obj) {
            if (obj.style.backgroundColor == "red") {
                obj.style.backgroundColor = "white";
            }
            else {
                obj.style.backgroundColor = "red";
            }
        }

Serialport from a remote server

grmihel214-Jul-10 0:18

grmihel2

14-Jul-10 0:18

Hi guys,

I'm playing with some kind of SMS service which should be automated, and I have already developed an application, which can send AT codes to a device through the Serial port COMx.
Now I want to expand that application a bit, so I from a desktop can send commands to the serial device on the server.

So PC1 can access Server1 (with serial device connected to com1) provided they are connected in same network.

Is it possible to make some C# code in a desktop application, which connect to a serialport on another machine? In this case the remote server. And how?

Re: Serialport from a remote server

Richard MacCutchan14-Jul-10 1:15

Richard MacCutchan

14-Jul-10 1:15

grmihel2 wrote:
Is it possible to make some C# code in a desktop application, which connect to a serialport on another machine? In this case the remote server.

I don't think it is possible to connect directly to another PC's serial port via a lan connection. You will probably need some program on the server that takes commands from your client PC and forwards them to the COM port.

It's time for a new signature.

Re: Serialport from a remote server

grmihel214-Jul-10 2:32

grmihel2

14-Jul-10 2:32

I'm affraid that you are right about that. I ended up with using a web service hosted on the com hosted server, and then call the get HTTP request needed in URL form to send message. Using webBrowser object in my desktop application (without opening it visually ofc), and it seems to work this way. Then there is just a request about keep the webhosting service running on the server.

Re: Serialport from a remote server

Dave Kreskowiak14-Jul-10 3:56

Dave Kreskowiak

14-Jul-10 3:56

The other question is does it work with multiple clients at the same time??

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: Serialport from a remote server

grmihel214-Jul-10 4:14

grmihel2

14-Jul-10 4:14

I doubt that the webpage request from the server is thread safe. Since its an sms service, it will overflow the GSM modem with AT commands, if there isn't a short sleep timer. But in my case it doesn't matter, since there is no concurrency problem in this case, which means there is only one person at time sending commands by using this service.

Re: Serialport from a remote server

Dave Kreskowiak14-Jul-10 6:39

Dave Kreskowiak

14-Jul-10 6:39

No, it's not. That's the point of the question. If you had more than one person hitting the service at the same time, one instance would get access to the serial port and the other would throw an exception that the port is busy. The question is how does your service code handle that little problem.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Data Types from Datareader

Unsy13-Jul-10 23:20

Unsy

13-Jul-10 23:20

Hi guys

I'm quite new to c#

I'm writing a little jobby to spit the contents of a SqlDataReader out into an HTML table as a string.

How can I find the datatype of each field in the data reader so that I can format it correctly? (dates, money etc)

Thanks Big Grin | :-D

If your wife wants to learn to drive, don't stand in her way...

Re: Data Types from Datareader

Prosanta Kundu online13-Jul-10 23:37

Prosanta Kundu online

13-Jul-10 23:37

SqlDataReader.GetDataTypeName : Gets a string representing the data type of the specified column

Re: Data Types from Datareader

Peace ON13-Jul-10 23:47

Peace ON

13-Jul-10 23:47

Try...

dataReader1.GetFieldType(0)

HTH

Jinal Desai - LIVE
Experience is mother of sage....

Re: Data Types from Datareader

riced14-Jul-10 0:10

riced

14-Jul-10 0:10

Unsy wrote:
a little jobby

You're not in Scotland, are you?
This has quite a different meaning there. Although it's usually referred to as 'a wee jobby'. Smile | :)

Regards
David R
---------------------------------------------------------------
"Every program eventually becomes rococo, and then rubble." - Alan Perlis
The only valid measurement of code quality: WTFs/minute.

Listbox Selection Mode MultiSimple/Extended how to sort item in sequence of selection

norjali13-Jul-10 22:44

norjali

13-Jul-10 22:44

Hi Im pretty new at C# (and also new here!). I am working on a form with a listbox with Multisimple selection mode. Problem is when i select the files, I want the file selection to be in the order of selection

eg

lets say i have item '1', '2', '3' in the listbox

'1'
'2'
'3'

i want to select '3',then '1' and lastly '2' but the items in listBox1.SelectedItems are always stored in '1''2''3'.

Thanks in advance

Re: Listbox Selection Mode MultiSimple/Extended how to sort item in sequence of selection

Luc Pattyn13-Jul-10 22:52

Luc Pattyn

13-Jul-10 22:52

The ListBox will not keep track of your selection order; all it keeps track of is the selected state for each of the items; as a result SelectedItems will enumerate the selected items in their order of appearance.

You need to implement your stuff yourself; just keep your own chronological list of selected items, wire up the SelectionChanged event, and adapt your list accordingly every time the selection changes; remember an item can be removed from the selection too!

Smile | :)

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Re: Listbox Selection Mode MultiSimple/Extended how to sort item in sequence of selection

norjali13-Jul-10 22:58

norjali

13-Jul-10 22:58

Luc Pattyn wrote:
The ListBox will not keep track of your selection order; all it keeps track of is the selected state for each of the items; as a result SelectedItems will enumerate the selected items in their order of appearance.

You need to implement your stuff yourself; just keep your own chronological list of selected items, wire up the SelectionChanged event, and adapt your list accordingly every time the selection changes; remember an item can be removed from the selection too!

thanks for the reply. I tried to keep a list of selected items, but listbox1.selecteditem wont return the current selected item (ie lets say i selected '3' and then '1' and then '2', then listbox.selecteditem will always return '1' cause its the first in order)

Re: Listbox Selection Mode MultiSimple/Extended how to sort item in sequence of selection

Luc Pattyn13-Jul-10 23:10

Luc Pattyn

13-Jul-10 23:10

yes, you need to compare all entries in SelectedItems with your private list and adapt the latter.

BTW: it will not be a nice GUI that takes order into account but does not show the order at all! One way to solve that is by moving the items around (moving the item selected last above the topmost unselected one), but I would hate to use that too, as I don't like a GUI with moving objects.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

Re: Listbox Selection Mode MultiSimple/Extended how to sort item in sequence of selection

norjali14-Jul-10 16:33

norjali

14-Jul-10 16:33

thanks, will give it a shot

Regular Expressions Performance

yftah198913-Jul-10 22:17

yftah1989

13-Jul-10 22:17

I'm creating a new program. The ONLY thing which is important for me is the running time of the program. Should I use a regular expressions, or maybe should I write my own search code?

Re: Regular Expressions Performance

Pete O'Hanlon13-Jul-10 22:26

Pete O'Hanlon

13-Jul-10 22:26

Without knowing what you are trying to achieve, it's hard to give any answers. I will say that a well designed regular expression will generally be faster than a roll your own search and replace algorithm, but a badly designed one can really kill performance when applied to large a data set. If, however, your search/replace doesn't naturally fit into a regular expression don't worry about it. Far too many times, people will contort themselves to write hugely complex regular expressions when a simple string.Replace would have sufficed.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

Re: Regular Expressions Performance

Luc Pattyn13-Jul-10 22:47

Luc Pattyn

13-Jul-10 22:47

A regex may win when it involves a complex operation that fits well with a regex approach; OTOH most of the time regexes are both more cryptic and slower than a few explicit string operations. I once performed this experiment[^].

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

Re: Regular Expressions Performance

riced14-Jul-10 0:15

riced

14-Jul-10 0:15

I'd say write your program whichever way suits you. Then if performance is a problem profile it to find out where it is spending time. Then, and only then, think about how to speed it up.
As has been pointed out, regexes may be faster, then again they may be slower.

Logging to Website

NaveenHS13-Jul-10 21:13

NaveenHS

13-Jul-10 21:13

Hello All,

I am very much new to C# ...

I am trying to log in to website and download some information.

is it possible to do that using C# ??

Please suggest me some ideas

Thanking you,
Naveen HS.

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