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Windows Forms App: Refreshing UI During Execution.
Posted by Frankie at 7/11/2005 11:39:23 PM
I'm writing a small C# Windows Forms application. As it does its processing,
I set the .Text property of a Label - so I can know the status of the
ongoing execution. Even though I set the property several times throughout
the execution, I don't see any but the last one - and even then I see it... more >>
NullReferenceException in System.Windows.Forms.SafeNativeMethods.MessageBox
Posted by Greg Bacchus at 7/11/2005 10:43:15 PM
Hi, I'm getting an exception that really has me stumped. It's sporadic
at best, it's only happened a handful of times.
This particular time it happened when the user pressed 'Alt-S' to save
the data that they were entering.
Following is all exception information.
Any thoughts much appreciat... more >>
Finding *unique* entries in a list
Posted by DrMarvin at 7/11/2005 10:33:01 PM
Hi.
I'm fairly new to C#, and have had some luck getting it to do what I want
to, but something I could do with bash shell scripting is escaping me.
Bash has a tool called "uniq", and it can take a list and just take out
unique entries. I am trying to create something that will take a lis... more >>
How to Open Word Document
Posted by Al at 7/11/2005 9:40:02 PM
Greetings,
I'm trying to open a word document when a command button is clicked. =
The code below loads Microsoft Word. I can see it in the task manager. =
When I tried to copy the file, I received an access denied error. So, I =
believe the document is also loaded. =20
But, the document i... more >>
For getting the Base Class Name
Posted by thomson at 7/11/2005 9:36:29 PM
Hi all,
i do have a class
class Page: CustomPage
{
}
and i do have some other class
class Page1:CustomPage1
{
}
I do have a seperate control where i pass (this.page)
Here the case is regardless of the base class iam passing the
this.page, But i need to know which clas... more >>
Best approach to maintain state in a winforms application
Posted by Dileep at 7/11/2005 8:50:01 PM
Hi,
I have a requirement wherein I need to maintain the state of the data in the
windows forms form application (C#).
Basically the interface is a graphical rich interface where there are
different shapes and on double click of each shape, a tab window pertaining
to that shape will be open... more >>
Retrieve images from WebServer
Posted by Saya at 7/11/2005 8:42:20 PM
Hello,
I'm new to WebServices and WinCE. My first projects involves an
image retrieving Client app, running on a desktop with XP. The local
server is IIS. The images resides on the server machine (jpg, bmp
etc). The app works fine; I did it with FromStream from the
System.Drawing.Image cla... more >>
Problem display ampersands (&) in a panel
Posted by Robert W. at 7/11/2005 8:12:11 PM
I'm allowing the user to enter a string of text which then gets displayed in
a panel. It works great except that if they enter 1 ampersand then it does
not display correctly. So I thought it was just a matter of using the String
Replace function to fix the problem.
I've tried: text.Repla... more >>
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Downloading File
Posted by Steven at 7/11/2005 6:36:51 PM
Hello
In my asp.net application,I will be showing some PDFs which the user can
download. When the user clicks on any PDF I will be downloading the related
file and I will be showing the related portion of the map in the image box.
When the user clicks on any file, the ImageBox is getting th... more >>
question regarding showdialog() and show() and a child form
Posted by VMI at 7/11/2005 6:32:41 PM
I have an MDI child form and when I display it I'd like all the other open
windows to remain unusable ( like the showdialog() ) but, at the same time,
it should be a child window (like the Form.Show() ). Is this possible?
Thanks.
... more >>
How to retrieve a property for a custom control.
Posted by Vern at 7/11/2005 5:40:02 PM
How can I loop through all the controls on the form, and for certain types of
controls, access the custom properties. For example, I've created a custom
textbox for name fields. It has a property called InvalidData that I turn on
during the validating event if the data is not valid.
Here'... more >>
Another C header conversion help.
Posted by Andre Azevedo at 7/11/2005 4:26:57 PM
Hi all,
I'm translation some C headers to C# but it doesn't work.
I need to fill the Call struct and pass it in encode function as *pdu
parameter. The function will encode and fill the PrivateData struct in *priv
parameter filling the data field but it return some wrong values. I've the
origi... more >>
Sharing Data between apps
Posted by Joe Thompson at 7/11/2005 4:05:01 PM
I am using Visual C# to design a system as follows:
There will be 3 computers all on the same network running identical programs
at the same time. The computers can come up in any order. The programs
(which I am writing) are supposed to share their data with one another a few
times per se... more >>
Serialized object to XmlDocument
Posted by Pierre at 7/11/2005 3:53:37 PM
Hi,
I would like to apply a Xsl Transformation on a serialized object. But
I don't know where to start.
Should I do a XmlDocument.load(ObjectToSerialize.ToString())?
Or should I call the ObjectToSerialize.Serialize() before? In wich case
I dun understand why I can't access the .Serialize(... more >>
COM Interop - Using a COM object from C#
Posted by Grant Schenck at 7/11/2005 3:07:02 PM
Hello,
I'm pretty new to both COM and C#/.Net so assume I'm an idiot and you won't
be far off the mark!
I built an STA COM object using VC 6.0. I build a number of applications
which use the object in C++ & VB 6.0. It all works well.
I was able to write a test application using C# and u... more >>
creating class
Posted by TS at 7/11/2005 2:45:59 PM
When have a class, but need some info that is contained in other class, is
it worth the overhead to instantiate both objects if you only need 2
properties, or let those other properties piggyback on the first class which
makes it not so OO?
Say you had a Home class & and HomeOwner class. If yo... more >>
Question on parameter for thread monitor?
Posted by brett at 7/11/2005 1:51:33 PM
What exactly is the parameter passed to a thread monitor used for?
For example, I might do this:
private Object Protect1 = new object();
Monitor.Enter(this.Protect1);
try
{
myarray[j].Delete();
}
finally
{
Monitor.Enter(this.Protect1);
}
The Protect1 parameter has nothing to do... more >>
Setting form control proerties at runtime
Posted by Homer Simpson at 7/11/2005 12:16:58 PM
I have a form named dataGatheringForm with a few controls on it (some
generic labels and a button).
How do I set the properties of the form (title, color, etc.) and it's
controls (a label for example) at runtime? I've included the code I have so
far and it does work.
Specifically, in thi... more >>
Internal Compiler Error - URGENT
Posted by gkustas NO[at]SPAM hvc.rr.com at 7/11/2005 12:01:24 PM
I am getting the internal compiler errors (CS0586) in my csharp project
- about 15-20 in various "stages" (i.e "COMPILE", "BIND"). I have been
beating myself up for a day now on this one - I even rebuilt the whole
project from scratch to see where it breaks, but that didn't help. When
the projec... more >>
Set the background to a Hex number
Posted by Mike L at 7/11/2005 11:58:06 AM
How do I set the backcolor for a form to a Hex number?
this.BackColor = #H00404;
... more >>
How to extract variable and its value from URL
Posted by Jozef Jarosciak at 7/11/2005 11:50:06 AM
I have url:
www.site.com/index?a=1&b=2
www.site.com/index?a=1
and I need a regex or some solution to extract 'a' variable and its
value.
Any ideas?
joe
... more >>
How do I open a console from a Winform App?
Posted by Frank Rizzo at 7/11/2005 10:45:30 AM
How do I open a console from a Winform App? I've tried
Console.WriteLine but that doesn't work.
Regards... more >>
StringCollection property loses value
Posted by Juan Francisco Figueroa Perez at 7/11/2005 9:59:50 AM
Hi all:
I have a StringCollection property like this:
public class FormExito : Form
{
................
................
private StringCollection FEditar;
[Editor("System.Windows.Forms.Design.StringCollectionEditor,
System.Design", System.Drawing.Design.UITypeEditor, System.Dra... more >>
The Server Connection Time out Error when builiding .Net applicaton
Posted by Zahir at 7/11/2005 9:56:01 AM
Hi :
I am developing an applicaiton with ASP.NET & C#, with remote web
server. It was working fine . But last two days when I bulid my
application it throws an error: "Cannot Save the file bin/holimart.pdb
to the web server. The server connection timed out." here holimart is
my project name. ... more >>
Reading an ASCII string from a binaryreader
Posted by Claire at 7/11/2005 9:44:50 AM
Would someone give me a code example that reads an ASCII string from a
binary reader and converts it to a c# string please. I find that the help
files aren't very clear on how do do this eg "DATA" = 4 bytes 0x44,
0x41,0x54,0x41
... more >>
Show Parent and Child off Main
Posted by Mike L at 7/11/2005 9:29:02 AM
I want to show the parent form (MDIContainer) and a child form on load of the
application. frmMain is the parent and frmDataEntry is the child.
static void Main()
{
Application.Run(new frmMain());
}
I tried adding... more >>
De-compress a file from UNIX
Posted by Marc Jennings at 7/11/2005 9:26:53 AM
Hi there,
I have a problem in that I need to de-compress a file that was
compressed using the UNIX compress command. The resulting filename is
helloworld.xml.Z
I have looked at SharpZipLib, but haven't been able to make it work on
this file (perhaps this format is not supported?)
WinZi... more >>
Threading question
Posted by John at 7/11/2005 9:05:03 AM
Hi
I have some difficulties understanding some issues with multithreading:
*What is the meaning of: "implement a method to run each update call in
its own thread"
*If i have a component that does an AsynchronousCallBack that will pass
data to the client, which thread will process the data, ... more >>
why define this kind of variable?
Posted by jerry.xuddd at 7/11/2005 8:06:05 AM
Hello,
I am quite new to c#, so this question may be quite stupid.
I saw some variables are defined as this:
ArrayList _Text= new ArrayList();
why _ is needed?
_
--
hello, please help... more >>
OpenFileDialog does not refresh after selection
Posted by Michael Grosse at 7/11/2005 7:41:05 AM
I've conquered a very strange behaviour that I cannot account for logically
and therefore seek help in this Discussion Group. I'm currently developing 2
applications and intend to use the standard open File Dialog with the code
snippet found below.
The code snippet is exactly the same in both... more >>
LPR via C#?
Posted by iamspo at 7/11/2005 7:01:08 AM
I am working on an application which sends a print file to a print queue on a
sun machine. Currently this is run vit DTS and a batch file calls the LPR
command.
I am changing this app to a .net console app in C#. I was wondering if it
is possible to do call the LPR command w/o shelling ou... more >>
Calling Corba from c#
Posted by daniel.westerberg NO[at]SPAM ipnc.se at 7/11/2005 6:05:00 AM
Hi all
I have to find a way to access som corba APIs on a remote server
(Apachee) from a webservice running on a win2k3 server.
Anyone have a idea as where its a good idea to start looking? so far
all i manage to find is 3rd part vendors selling finished solutions
for this, but that is not an... more >>
DataGridViewMaskedTextBoxColumn
Posted by Brian Keating at 7/11/2005 3:40:01 AM
hi again,
has anyone an idea on how i can get my datagrid view to only allow entry of
numeric values.
ok i can validate when leaving but what i really want to do is not allow
invalid characters to be typed to begin with.
Thanks for any help
Brian ... more >>
Timer and Random
Posted by VenuGopal at 7/11/2005 12:34:01 AM
hi,
i have a WELCOME screen. here i have a PICTURE BOX. there are 8 pictures
that go into this Picture Box.
At every 5 seconds i want to RANDOMLY load a new Picture.
this is what i am using but it is not loading the new picture.
Can any one help?
public void Presentation_Load(object s... more >>
EMAIL on Win98
Posted by VenuGopal at 7/11/2005 12:16:03 AM
Hi,
My client uses Win 98. The email part does not work in Win98. I read the
documentation and i find that System.Web is not supported in Win98.
Now How do i send email on a win 98 platform.
Thnks and this is very urgent
Venugopal... more >>
How can i create a form which cannot get Active / Focus ?
Posted by dulo at 7/11/2005 12:00:00 AM
How can i create a form which cannot get Active / Focus ?
thx Dulo... more >>
Tcp socket connection broken
Posted by Droopy at 7/11/2005 12:00:00 AM
Hi,
I developed an application in C# (VS 2003) using Tcp sockets.
What is the more reliable way to know when a Tcp connection is broken.
My code looks like this :
while (_mustRun)
{
if (_socket.Poll (PollTimeout, SelectMode.SelectRead))
{
if (_socket.Available == 0)
... more >>
Can 'is' followed by cast by optimized away
Posted by Thorsten Ottosen at 7/11/2005 12:00:00 AM
Hi,
Can the following ugly type-switching code by optimized
by the compiler/jitter?:
object o = ...;
if( o is Foo )
return (Foo)o;
Arguably, the cast is guranteed to succeed, but do the
compiler take advantage of that?
If yes, would it be possible to each that conclusion
by look... more >>
How to extract an OLE Object (Bitmap Image) from JET?
Posted by deko at 7/11/2005 12:00:00 AM
I have a Windows Forms app that connects to an Access database. One of the
tables in the database contains a bunch of pictures stored in OLE Object
fields.
What I need to do is extract those pictures to the file system so the user
can do stuff with the image. For example, the user would s... more >>
ConfigurationManager in Beta2
Posted by Michael Debus at 7/11/2005 12:00:00 AM
Hi, I try to read a value from app.config file using this code:
string
s=System.Configuration.ConfigurationManager.AppSettings["server"].ToString();
I got the compiler error:
Error 1 The type or namespace name 'ConfigurationManager' does not exist in
the namespace 'System.Configurati... more >>
Re: Creting a table as in MS-WORD
Posted by Pramod at 7/11/2005 12:00:00 AM
"Pramod" <pramod.yadav@solversa.com> wrote in message news:...
> hi all,
> I m working in C# .Net and want to create a table
> on RichTextBox which should look similar to the one in
> MS-WORD.
> The column width should resize when text is entered into.
>
> Any code or Hint will be appriciat... more >>
How to call .bat file from .NET?
Posted by Bright at 7/11/2005 12:00:00 AM
Hi All,
I want to execute a .bat file and get the output from console using C# in a
window application, the .bat file includes the java classpath and other
environment setting, can anyone know how I can do that?
Thanks in advance,
Bright
... more >>
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