all groups > c# > november 2003 > threads for friday november 14
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very simple & strange error
Posted by Dave at 11/14/2003 10:54:35 PM
I build a very simple program that I put at the end of this post. This
program is just supposed to put a button on the screen and exit the program
when I press the escape button. But pressing the escape button doesn't do
anything if I put the code for the button into the program! infact, pressin... more >>
unhandled exception class System.NullReferenceException
Posted by Merlynx at 11/14/2003 9:41:03 PM
i am getting that error with the Event() method.
Don't know whether if i have used the CreateEvent function well as it is the
1st time i used it moreover i am net to C#.
If anyone can point me out the error it would be great.
TIA
public class Class
{
public struct SECURITY_ATTR... more >>
dynamically loading assembly from gac of a remote machine
Posted by Vivek at 11/14/2003 7:58:21 PM
HI Everyone,
I am trying to dynamically load a custom deployed assembly from the GAC of a
remote machine so that i could call its method from my code using
reflection. Can anyone tell me how do i do this? Any help would be
appreciated.
Thanks
Vivek
... more >>
Dynamically load FlashShockWave Object
Posted by Ron Vecchi at 11/14/2003 7:00:59 PM
I am using the FlashShockWave COM object.
in the form design mode I specified the Flash Movie .SWF local path. and it
loads correctly.
My problem is that if I make changes to the swf file it never is changed in
the EXE. It seem to be embedded.
I have to remove the object and then add a new... more >>
How to detect mouseclick anywhere
Posted by Kubik at 11/14/2003 5:40:47 PM
Hello!
How to detect mouseclick anywhere on the form? There is a lot of
controls on the form, so I don't want to add eventhandler for each of them.
How can I do it in another way?
Adam
--
**remove REM from the mail address**
... more >>
Converting date to local specific information
Posted by Muscha at 11/14/2003 4:51:20 PM
Hi,
How do I convert a DateTime structure into the same format with the current
setting on Windows?
thanks,
/m
... more >>
Splitting a string into an array using a STRING value
Posted by Jason at 11/14/2003 4:39:09 PM
Hi all
basically its what i said in the subject. Would just like to know how to
split a string using a STRING value as the delimeter and not a CHAR as the
delimeter. Example: "I like Cheese", how would i get the following array:
strArray[0] = "I"; strArray[1] = "Cheese", using "like" as the de... more >>
Help: object reference is required for the nonstatic field
Posted by TdJ at 11/14/2003 4:34:30 PM
No end of reading on the net and I can not get this to compile! The error
message is:
An object reference is required for the nonstatic field, method, or property
'BusinessAreaDataSet.BusinessAreaTableDataTable.FindByBusinessAreaID(int)'
Could someone explain to me what I am missing ... I w... more >>
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<include> with relative file path does not work
Posted by Alex VanderWoude at 11/14/2003 4:27:58 PM
I am trying to <include> some text into an XML documentation topic, but
that text is stored in a file that is in a different directory than the
"current" XML file. Using a relative path does not appear to work, because
the base being used is the Common7\IDE directory, not my original source
... more >>
Dot net assembly versioning
Posted by Coder at 11/14/2003 4:27:22 PM
I notice that MS says the version numbers have the following format:
<major version>.<minor version>.<build number>.<revision>
If you give a assembly version as "1.0.*", the two latest numbers should
increment.
However, the latest number (rightmost/revision) is the fastest moving, which
inc... more >>
Newbie question (calculations)
Posted by Ivan Demkovitch at 11/14/2003 4:05:22 PM
Hi!
I'm working on porting some fairly complex code from VB to C#.
There is some calculations involved. Also, many numeric constants involved.
Like:
a = 1/b
I'm not sure if I need to write it like:
a = ((double)1/b) in C#?
Also, there is a lot of code where integers computed togethe... more >>
Genrics questions
Posted by Chun Wang at 11/14/2003 3:51:15 PM
1. When writing genric classes or methods, can I use
specifc type (instead of generic type) as type parameter?
For example:
pulic class MyStack<T, int>
{
.....
}
Here maybe I want to establish a upper limit of the stack.
2. Does the implemention support specialization? (I mean
s... more >>
Organizing metadata
Posted by belangour abdessamad at 11/14/2003 3:02:12 PM
Hi,
In the metadata for an exe file for example, there is classes organized in
namespaces.
the GetExportedTypes methods returns all types. I need to get the names of
namspaces and to organize these classes in their corresponding namespaces.
Any help would be appreciated.
Thanks.
... more >>
decrypting from memory stream
Posted by JW at 11/14/2003 2:56:26 PM
I can encrypt the contents of a memory stream with no problems, however when
decrypting( I'm using the same key an IV ) I get an exception stating bad
data.
I'm at a lost. I'm actually creating a new memory stream, filling it with
the encrypted bytes then trying to read from the crypto stre... more >>
Visual Studio bug / limitation
Posted by Bill Burris at 11/14/2003 2:45:00 PM
When compiling my solution which contains 15 projects (2 Window Apps, 2
Services, 11 class libraries, C#, MC++, & C++), I was receiving warnings
about symbols defined in multiple places. Selecting Rebuild Solution did
not make the problem go away. After selecting Clean Solution, followed by
Re... more >>
dploying windows service using install script
Posted by raghavendra at 11/14/2003 2:12:15 PM
Hi,
How to run automatically windows service by using setup deployment
insatllation script using visual studio 2003.?
What i did is :--
1. created a windows service & tested the
same.
2. then i used the windowsservice.exe in setu... more >>
C# help ...
Posted by Paul Rodrigues at 11/14/2003 2:07:16 PM
I=B4m new to programing C# and i have a doubt. Does C# form=20
apps need .net framework installed on host computer to run=20
?... more >>
Newbie class question
Posted by Lou at 11/14/2003 2:00:57 PM
I come from VB so..
I created a class named Channel, to create an instance of that class,
On a form button click i add the following code:
private void button1_Click(object sender, System.EventArgs e)
{
Channel myChannel=New Channel();
}
but I get a build error there, says ";expe... more >>
Dotted lines
Posted by Durand at 11/14/2003 1:58:06 PM
Somebody can help to draw dotted giagonal lines?
Thanks
Durand
... more >>
ArrayList Question
Posted by george r smith at 11/14/2003 1:23:11 PM
I am trying to create an arrayList that contains multiple arrayLists.
My code attempt is below. The question I have is how can I get away
from creating another pAttribute list than can be added to pItem.
As I understand it (and I coded it to test) if I try to use pAttribute again
by clearing w... more >>
How to wake up a sleeping thread?
Posted by Muscha at 11/14/2003 1:22:39 PM
Hello,
I have a thread that in the middle of the execution I did Thread.Sleep().
How do I tell this thread to abort it sleep and continues? Is there a way?
thanks,
/m
... more >>
expressions
Posted by Dan H. at 11/14/2003 12:43:23 PM
Hello,
I have a need to take user inputted text such as:
13.5*(1./((1./5)-1.))**(1./4.17)
and evaluate to a number. What key words would I google on? Or are they
some decent object oriented books that you know of that cover this? Online
tutorials or sample source?
Thanks in advanced,
... more >>
change the default UITypeEditor
Posted by margoulin at 11/14/2003 12:25:18 PM
Hi,
I have a custom color selector control and a derived UITypeEditor allowing
me tu use my color picker in a property grid. But I have to specifically
call this editor for each property, like
[CategoryAttribute("General"),
EditorAttribute(typeof(kColorEd), typeof(UITypeEditor)),
TypeConve... more >>
Simple question on DataTable and DataGrid
Posted by Doug at 11/14/2003 12:12:10 PM
Hi,
I'm trying to load data from SQL Server into a DataGrid. I planned on using
a DataTable to store the data, but I can't get the logic correct. Can
someone please tell me what I'm doing wrong? Thanks.
try
{
DatabaseConnection dc = new DatabaseConnection(); //this handles all the A... more >>
Disposed exception at runtime but not in VS.NET
Posted by Scott at 11/14/2003 10:54:29 AM
I'm getting a ObjectDisposedException from my Winform EXE, but not when I run the identical test case in the VS.NET debugger
Our application is a run-of-the-mill two pane (like outlook) app that dynamically creates the right-side user control based on what node you click on the left-side treeview ... more >>
What is equivelant to VB.NET GetType()
Posted by Daniel Billingsley at 11/14/2003 10:36:23 AM
Using this keyword in VB I can do
Dim typeData As Type = GetType(myClass)
which returns a Type of course. I can't find quite the same thing in C# or
the framework.
Will the following meet the needs like the above VB code? (If so, then why
the keyword in VB???)
Type typeData = Type.Ge... more >>
Private webservice?
Posted by Hugh at 11/14/2003 10:33:37 AM
Hello everyone,
I'm reasonably new to webservices, and have been playing around with
creating one in VS .NET, and then writing another app, and adding a web
reference to it to communicate with my web service. What I was wondering, is
if someone got the URL to this web service, are they free to... more >>
Possible to attach an HWND to a Form??
Posted by WayneD at 11/14/2003 10:18:35 AM
Hi All,
I'm writing a class that implements a COM interface. Unfortunately, one of
the methods passes in an HWND and I'm supposed to create a control with that
HWND as the parent. The idea is to plop my control onto the client's dialog.
Is this possible in C#??? There are 2 issues I'm concerned ... more >>
UDPClient and my mental situaton.. Please Help
Posted by Serdar C. at 11/14/2003 9:28:57 AM
im trying to write a really simple program that
communicates with udp packets between server and client
apps... but i cant receive (or send?) any data from any
of the applications.. what am i doin wrong? here are the
send and receive lines from my program:
Server:
ofcourse this void is in ... more >>
Fresh Install Issue
Posted by Chris Jackson at 11/14/2003 9:16:18 AM
I just installed 1.1 SDK and after reboot I created a new file (hello.cs) in
c root.
then in a command prompt I types:
csc hello.cs
and i get
'csc' is not recognized as an internal or external command,
operable program or batch file.
the installation went fine -
how can i compile a... more >>
object question
Posted by PCH at 11/14/2003 8:37:02 AM
posted on wrong ng :-)
Hello all,
I want to setup a program that will have several similar classes that with
have identitcal properties.
Im my main procedure I want to only declare 1 basic object that can be used
for any of the classes.
such as:
object oObj;
oObj = new Class1();
... more >>
MSDN Architect or Developer
Posted by george r smith at 11/14/2003 8:35:53 AM
What are the main advantages to a developer in purchasing Visual Studio .NET
Enterprise Architect over Visual Studio .NET Developer.
I know of the web sites - just would like some developer opinions.
thanks.
grs
... more >>
is C# suitable...
Posted by pvp at 11/14/2003 7:49:38 AM
.... for implementing another, new, computer language that
needs to have a concurrent runtime. IOW, I am creating a
new language that needs runtime that supports multi-
tasking. The language will need to schedule existing
applications such as MS Office.
Thanks.
... more >>
Performance Counters
Posted by Jerry Negrelli at 11/14/2003 7:42:23 AM
What is happening behind the scenes when I call
System.Diagnostics.PerformanceCounter on a remote
machine? Is it connecting via RPC? What security
context is it run under? Any explanation or links would
be much appreciated!
JER... more >>
Accessing File and Folders on Network
Posted by Rosa_Shelton NO[at]SPAM hotmail.com at 11/14/2003 7:12:05 AM
Hi,
I'm experiencing a bit of a problem with security and file access from
within a ASP.Net application...
Locally (from an XP client) I manage to get any file or folder on my
machine with something similar to this:
DirectoryInfo di = new DirectoryInfo(strURL);
if(di.Exists)
{
FileInfo[] ... more >>
same type in 2 different assemblies - issues?
Posted by n_o_s_p_a__m NO[at]SPAM mail.com at 11/14/2003 7:05:54 AM
Ok, I have source code shared between 2 projects using links in VSS,
so we are compiling the same type information (classes, interfaces,
enums) into more than one assembly. This was done only by special
request of our client.
I am wondering if this is ok to do:
In AssemblyA: class1's method... more >>
TripleDESCryptoServiceProvider bad data error
Posted by james_crane NO[at]SPAM btinternet.com at 11/14/2003 6:16:43 AM
Hi all,
I have seem few messages posted regaring this but as yet have been
able to get this code to work. The plan was to encrypt some string
then pass the result to another function that woudl decrypt it -
please see below. Anyway i keep getting a 'bad data' exception. I'm
totally at a loss,... more >>
Calling a COM Object with a VARIANT* param from C# just shows ref object varParam
Posted by david.adams NO[at]SPAM group4technology.com at 11/14/2003 5:55:16 AM
I wish to call a COM Object which has a parameter of type VARIANT* on
a method call from C#
The COM Method :-
STDMETHODIMP CClassType::GetTypeIDs(VARIANT * TypeIDs)
{
AFX_MANAGE_STATE(AfxGetStaticModuleState())
if (DeviceTypeIDs->vt != (VT_I2|VT_ARRAY))
return E_INVALIDARG ;
VARIANT*... more >>
datagrid in c#
Posted by r.bihain NO[at]SPAM belgacom.net at 11/14/2003 5:48:01 AM
when using datagrid in c#:
a blank field is replace vy the (null) value.
How is it possible to avoid this?... more >>
help Newbie. How do I reference a forms control from another class
Posted by robweston NO[at]SPAM o2.co.uk at 11/14/2003 5:31:57 AM
I am a newbie to the wonders of C# programmming and I would be
grateful if someone could help me! I would like to create a class that
will change the properties of a label or text control (such as back
color) during a mouse over event. I would like the class to be generic
so that it may be used ... more >>
Thread safe Static methods how
Posted by Claes R at 11/14/2003 5:05:01 AM
Hi !
I would like this class method to be thread safe.
public static ArrayList List(DateTime date)
{
ArrayList l = new ArrayList();
l.Add(new ListItemInfo( 1, "S1010"));
......
return l;
}
How do i accomplish this in a scalable way ?
lock works on a object, not class (or ??)... more >>
Question on Using Partial Types with ASP.NET via J.I.T.
Posted by nospam at 11/14/2003 3:56:28 AM
I got three (3) files
(1) Untitled.aspx
(2) Untitled.aspx.1.cs
(3) Untitled.aspx.2.cs
These three files must be used together to make file #1, Untitled.aspx, page
work via
J.I.T. when the User first hits Internet Explorer 6.0 on your browser.
MY QUESTION to the Microsoft ASP.NET and C... more >>
problem with hexa
Posted by nvivo NO[at]SPAM mandic.com.br at 11/14/2003 3:54:47 AM
Ok, let me explain this first. I did a search about 'hexadecimal'
first and found a lot of threads about it, but none of them tell me
what i want to know.
I am new to C#, and want to work with binary data (actually some
custom file formats). I used to do this a lot in PHP, but i can't
underst... more >>
Outlook Express and this forum??
Posted by Serdar C. at 11/14/2003 3:47:28 AM
can anyone tell me how can i cnonect to these forums from
outlook express? that will help a lot! have a nice day..... more >>
using namespaces in C# (newbie)
Posted by Svein Erik Storkaas at 11/14/2003 1:48:30 AM
I'm having problem using namespaces in C#...
It's like it is being ignored no matter what i use..does'nt seem to work.
Can anyone give a small sample code just how to use it?
thanx
... more >>
Can resource of system be disposed when a thread is aborted?
Posted by fjlpf at 11/14/2003 1:45:20 AM
I create a new thread, and in it, create a socket.
Now I want to terminate the thread in main thread, but
can the socket be disposed automaticly?
If it can't, how can I manage this situation?
Thanks in advance!... more >>
C#/asp.net paging
Posted by Ron Fowler at 11/14/2003 1:39:09 AM
Folks,
I'm a newbie to web programming and c#, so please excuse
if I seem to ask silly questions!
I'm trying to figure out how to program a test on a web
site so that the users can't use the 'back' button. I
need to do it all client-side, without anything stored on
the server.
Is t... more >>
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