Re: why if i load an image in a Picturebox it is not usable - C# Discussion Boards

dgap17-Jun-05 22:00

17-Jun-05 22:00

SOMEONE please help me out here. this should be a very easy fix but i just cant get it to work! i'm probably making a stupid mistake cuz i'm programming so late... here is the problem. I have a (multiple selection) listbox that I populated from a database and I want to go through and see what the user selected. The code builds and executes but when I make any selections the "Selected" option keeps returning FALSE when it should be TRUE!!!
Any help would be greatly appreciated, Here is my code:

int j;
string temp;
string[] asSelected = new string[lstListBox.Items.Count];
foreach (ListItem i in lstListBox.Items)
{
if (i.Selected)
asSelected[j++]=i.Value.ToString()+", ";
}
temp = asSelected[0];
for (int i=1; i

Re: HELP NEEDED ON LISTBOXES!

Robert Rohde17-Jun-05 23:18

Robert Rohde

17-Jun-05 23:18

Well tell me what ListItem should be? Its not a class of the framework. I assume you added those objects into the ListBox but how should the ListBox know to set the Selected property of this special class which it cannot know?
Try instead iterating over the SelectedItems property of the ListBox:

string s = "";
foreach (ListItem i in lstListBox.SelectedItems){
s += i.Value.ToString() + ", ";
}

Re: HELP NEEDED ON LISTBOXES!

dgap18-Jun-05 7:27

dgap

18-Jun-05 7:27

Hi,

I get an error when I try to build that code

Re: HELP NEEDED ON LISTBOXES!

Amr_Cs19-Jun-05 13:03

Amr_Cs

19-Jun-05 13:03

hii.. its very small bug, u forget to initialize the variable j.. just let it have an initial value zero .. hope that works Smile | :)

IF u need help...Help the others

How to run a Method exactly 12.30 PM?

pubududilena17-Jun-05 18:56

pubududilena

17-Jun-05 18:56

hi all,
I am writing a C# Application.Now I need to run a Method called
"execute_Query()" exactly at 12.30 PM..Can any tell me how to do it using C#?

thanks in advance..

Re: How to run a Method exactly 12.30 PM?

Christian Graus17-Jun-05 21:32

Christian Graus

17-Jun-05 21:32

I believe windows has an event scheduler you can use. Or you can use DateTime.Now and thread.Sleep, I guess.

Christian Graus - Microsoft MVP - C++

why if i load an image in a Picturebox it is not usable

Sasuko17-Jun-05 14:46

Sasuko

17-Jun-05 14:46

if i load an image (png, bmp...) in a PictureBox.Image and i try to delete that image by windows delete rightclick command i get an allert like this: "impossible to delete becouse the file is used by another process".
I have to close my application to manage that file (rename, cut, delete...)
why?

Re: why if i load an image in a Picturebox it is not usable

Dave Kreskowiak17-Jun-05 17:53

Dave Kreskowiak

17-Jun-05 17:53

This is because the Image property, loaded from a file, keeps the file open for the lifetime of the Image. See this[^] KB article on MSDN for the details and workaround.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: why if i load an image in a Picturebox it is not usable

Sasuko18-Jun-05 0:54

Sasuko

18-Jun-05 0:54

tnx

c# on windows 98

Green Fuze17-Jun-05 14:21

Green Fuze

17-Jun-05 14:21

Hey

is there anyway to run c# applications on windows 98?

Re: c# on windows 98

Dave Kreskowiak17-Jun-05 17:48

Dave Kreskowiak

17-Jun-05 17:48

You just have to install the .NET Framework. Be aware that not everything is supported on Win98.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: c# on windows 98

Green Fuze17-Jun-05 21:05

Green Fuze

17-Jun-05 21:05

okay, thanks Smile | :)

Re: c# on windows 98

Vasudevan Deepak Kumar18-Jun-05 1:10

Vasudevan Deepak Kumar

18-Jun-05 1:10

You need .NET Runtime to run .NET Applications.

You can run console applications, Windows applications comfortably.
WebAPPs (ASP.NeT) will not run on Windows 98 PWS.

Deepak Kumar Vasudevan
Personal Web: http://vdeepakkumar.netfirms.com/
I Blog At: http://deepak.blogdrive.com/

Re: c# on windows 98

Green Fuze18-Jun-05 5:55

Green Fuze

18-Jun-05 5:55

ok, thx!

Re: c# on windows 98

AristotleYu18-Jun-05 23:23

AristotleYu

18-Jun-05 23:23

can i istall .ner framework on win 98
and can i istall c#.net

Re: c# on windows 98

Vasudevan Deepak Kumar19-Jun-05 19:07

Vasudevan Deepak Kumar

19-Jun-05 19:07

C# is part of .NET Framework and there is nothing separate like C# .NET download/installable.

Did this help you?

Deepak Kumar Vasudevan
Personal Web: http://vdeepakkumar.netfirms.com/
I Blog At: http://deepak.blogdrive.com/

Re: c# on windows 98

AristotleYu21-Jun-05 1:26

AristotleYu

21-Jun-05 1:26

okay, but i can write or run some coed in win 98

How can i do X^Y?

Anthony Mushrow17-Jun-05 13:30

Anthony Mushrow

17-Jun-05 13:30

Like 2^2 is four, but i want to do 100*1.5^ anything between 1, and 100

Re: How can i do X^Y?

DavidNohejl17-Jun-05 13:33

DavidNohejl

17-Jun-05 13:33

X^Y = X*X*X*X....*X*X (y-times)
so when you know Y and X, you just write....
Big Grin | :-D

now seriously,

<a href = "http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemmathclasspowtopic.asp" rel="nofollow">Math.Pow()</a>[<a href = "http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemmathclasspowtopic.asp" target = "_blank" rel="nofollow">^</a>]

David

Re: How can i do X^Y?

Christian Graus17-Jun-05 21:35

Christian Graus

17-Jun-05 21:35

Damn - I missed the second bit and thought you'd given some silly advice for real....

Christian Graus - Microsoft MVP - C++

Re: How can i do X^Y?

DavidNohejl18-Jun-05 1:37

DavidNohejl

18-Jun-05 1:37

Never forget: "Stay kul and happy" (I.A.)

David's thoughts / dnhsoftware.org / MyHTMLTidy

Re: How can i do X^Y?

Christian Graus17-Jun-05 21:34

Christian Graus

17-Jun-05 21:34

Math.Pow(1.5, x) * 100

Christian Graus - Microsoft MVP - C++

Re: How can i do X^Y?

MoustafaS18-Jun-05 1:39

MoustafaS

18-Jun-05 1:39

The Undefeated wrote:
but i want to do 100*1.5^ anything between 1, and 100

This may help :

Random r = new Random();
double result  = Math.Pow(100*1.5,Convert.ToDouble(r.Next(1,100)));

Crystal Reports Parameters

John Abbot17-Jun-05 12:51

John Abbot

17-Jun-05 12:51

I've read in the 'documentation' that Crystal Reports supports passing parameters to the reports. I've also seen within the report generator IDE that I can select a value of any specific field as a filter / search criteria. I would like to combine these two features. I would like to be able to specify that <fieldname> = <parameter1> when invoking the report within my application. Is this possible?

Thanks.

C# Socket Connecting to a C++ Socket

DavinCreed17-Jun-05 12:40

DavinCreed

17-Jun-05 12:40

I have been working on this for about 8 hours, and I have been looking on the web for about two days and I haven't found any one that has this same problem.

I have just taken over a project that is going to be using a C# client that connects to a C++ server side console application (I'll call it "the proxy" from here on) that takes a request from the client, queries a database and then returns the results.

The old client is written in VB6.0 and new the client that is almost done is written in C#. The new client is almost done, but it is accessing a test Database directly (probably because the programmer before me couldn't connect to the proxy either).

This is my Error dialog:

Error Dialog:<br />
<br />
Error: 10061<br />
Execption: <br />
Native Error: 10061<br />
Target: Void Connect(System.Net.EndPoint)<br />
Source: System<br />
<br />
StackTrace:<br />
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)<br />
   at WindowsApplication1.frmConnect.btnConnect_Click(Object sender, EventArgs e) in c:\temp_data_store\tempest\tempest5\clisrv4\windowsapplication1\frmconnect.cs:line 158

I created a C++ client that only has the connection method using WinSock and it connects just fine no matter where on the network (or even off the network), the client and/or the proxy is.

This is my code in C# for a connection:

<br />
Socket mySock;<br />
IPAddress srvIP;<br />
IPEndPoint srvEnd;<br />
<br />
srvIP = IPAddress.Parse("127.0.0.1");<br />
srvEnd = new IPEndPoint(srvIP, 8765);<br />
mySock.Connect(srvEnd);

I have tried binding the socket, but when both are running on my local machine it throws the port already bound exception and when they are on seperate machines it throws that same 10061 error.

Is there a better way to connect to a C++ socket using C#, because if I have to write a .dll, rewrite the Client in C++ or add another thread to listen to the C# client then I need to get it done soon.

Thank you for your time.

What ever doesn't kill you... you live through.

<edited some="" spelling="" grammar="" errors="">

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