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is this code executing on the main thread? if not, you're in trouble. see this[^].
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i have only one thread.
so i guess it does runs from the main thread..
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eyalle wrote: i guess
not very scientific; you could check using Control.InvokeRequired or by looking at Thread.GetCurrentThread().ThreadID.
eyalle wrote: i have only one thread.
so ...
unless you have asynchronous handlers, moat of them run from a threadpool thread (most timers, SerialPort.DataReceived, etc).
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The easiest thing would be to call the TreeView.Invalidate() to have it redraw itself.
Hold on a second here... Don't you think you might be putting the horse ahead of the cart?
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what to you mean by
putting the horse ahead of the cart?
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That's from my signature, it's not related to your inquiry. However, there is a saying in the United States (and perhaps other English-speaking countries) of "putting the cart ahead of the horse" in other words, doing things in the wrong order. I just reversed them to where they are back in the correct order because I'm a goofball. 
Hold on a second here... Don't you think you might be putting the horse ahead of the cart?
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Got'ya..
anyway, your solution isnt working.
i'll tell you what i found out maybe you'll know
in my code where i do
originNode.Remove();
the
targetNode.Nodes.Count doesnt change..
for Example, if i had 2 nodes under the targetNode, after the Remove function, still staying with 2..
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I am using the following code to store public variables:
using System;
using System.Collections.Generic;
using System.Text;
namespace Takhlees
{
class public_class
{
private static string user_login;
public string login_user_login
{
get { return user_login; }
set { user_login = value; }
}
}
}
and I want to create a table called user_rights with user_right_code and user_right_value fields..... The user_right_value field will be a bit with True or False and the user_right_code will have something like:
ADD_OCCUPATION
EDIT_OCCUPATION
DELETE_OCCUPATION
BROWSE _OCCUPATIONS
BROWSE _GENDER
BROWSE_NATIONALITY
BROWSE_USERS
ADD_USER
EDIT_USER
RESET_PASSWORD
I want to know how can automatiocally retrive the user_right_code and user_right_value into public variables? do i have to create each and every code in the public_class?!!
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Yes, in some form or fashion you need to have properties that tell you whether a particular user has a particular right. In this case you are relating a set of rights directly to a user. It is common, and may be beneficial, to use 'roles' where you construct a set of roles and each role has a set of rights associated with it, then a user is assigned a role rather than a set of individual priviledges. For example, a role named 'Admin' which has all the rights and one named 'ReadOnly' that only has the BROWSE rights. Choose whichever method works best for your needs.
As far as retrieving the rights, the best OOP way would be to have a User class and some kind of security class that would contain information about the user's rights. The User class would be a composite in that it would contain a copy of the security class. It would seem pretty straight-forward to have the User class create and fill the security object when the User class is filled with the User data (perhaps invoking a query or stored procedure to retrieve the rights data where UserID=X).
There are a myriad of ways of accomplishing this, I just gave one example to illustrate one way it could be done.
Hold on a second here... Don't you think you might be putting the horse ahead of the cart?
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but can you please explain a bit how can i use my properties to store the user rights? now if I have sql reader to read all the rights wheer user_id = 7 for example... I should read two columns, user_right_code and user_right_value?!! sorry but even after 10 cups of coffee I am still confused....!!
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I have a question.. is thete any way to have a variable called user_rights with a property for every right and its value? if that's possible then I can read the rights from the user_rights table and retrieve the following:
user_rights[ALLOW_CREATE_CLIENT, True)
user_rights[ALLOW_DELETE_CLIENT, False)
where ALLOW_CREATE_CLIENT and ALLOW_DELETE_CLIENT are properties of user_rights
where True and False are values for every property.
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how can i know when a function is been added/removed from my Event?
I want to do some connection when a COM is add a function to my event.
public delegate void DoItDelegate(int i);
....
....
{
DoItDelegate MyFunction;
MyFunction += new DoItDelegate(DoItFunction);
}
public void DoItFunction(int i)
{
}
When the command : "MyFunction += new DoItDelegate(DoItFunction); " is been execute i want to do something in another function.
What can i do if i want to know when this "MyFunction += new DoItDelegate(DoItFunction);" is execute and register it to Datatable?
(The command "MyFunction += new DoItDelegate(DoItFunction);" is in the COM code and not in my code so i can't control it.)
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You mention 'my event' but I don't see any events in your code, only a delegate.
If you are using events then you can use the add and remove methods and call your other function there.
public class DoItUser
{
public DoItUser()
{
MyClass myClass = new MyClass();
myClass.MyEvent += new DoItDelegate(DoItFunction);
}
private void DoItFunction(int i)
{
}
}
public delegate void DoItDelegate(int i);
public class MyClass
{
private DoItDelegate myEvent;
public event DoItDelegate MyEvent
{
add
{
myEvent += value;
DoSomethingElse();
}
remove { myEvent -= value; }
}
private void DoSomethingElse()
{
}
}
Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Why are you using VB6? Do you hate yourself? (Christian Graus)
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public delegate void DoItDelegate(int i);........{DoItDelegate MyFunction;MyFunction += new DoItDelegate(DoItFunction); }public void DoItFunction(int i){ //Do Domthing}
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I have made a project for plotting the binary data from network.
The project name is Multibeam echo sounder.
The beam and position format to plot.
The beam consist of 30 lakh of lat,long,depth data.
The position consist of 750 lat,long,depth.
In this the beam i plot is stored in arraylist.
Arraylist store lat long depth.
It get very bulky as it start.
can any body give suggestion over real time plotting.
any type of buffer i used in this?
please rply asasp.
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you have more data points than there are pixels on a typical monitor, that does not make much sense.
can't you somehow reduce the size of your data set, resulting in a more informative output?
also: lists, arraylists, etc. all grow by doubling their internal array and copying their content; swee here[^]. So if you have a good estimate for their final size, allocate that using initial capacity parameter.
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Hi,
Im using C# in VC++ for WPF.
I create one Delegates in C# as follow
public delegate void NameTab(string msg);
public static event NameTab CallClick;
private void Callbutton_Click(object sender, RoutedEventArgs e)
{
String msg = comboBox1.Text;
CallClick(msg);
}
Im using in my VC++ code as follow
Tabcontrol::SecondTab::CallClick += gcnew Tabcontrol::SecondTab::NameTab(OnCallClick);
And OnCallClick fucntion is
static void OnCallClick(CString msg)
{
}
But it shows error
error C3352: 'OnCallClick' : the specified function does not match the delegate type 'void (System::String ^)'
Im using button click event handler and its woking perfectly.But this only shows error.As i want to get the text in combox,im passing that text as parametes and im uisng that text in vc++ code.
pls help me.
Anu
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that is because your callback needs to accept a System.String datatype instead of CString. If you need to marshal String^ to Cstring just do the following.
static void OnCallClick(String ^msg)
{
CString nativeString = msg;
}
And guess what! You may have noticed that you don't have to marshal System.String into a CString in your code. That is because of a little trick in cstringt.h
#if defined(__cplusplus_cli)
template <class SystemString>
CStringT( SystemString^ pString ) :
CThisSimpleString( StringTraits::GetDefaultManager() )
{
cli::pin_ptr<const System::Char> pChar = PtrToStringChars( pString );
const wchar_t *psz = pChar;
*this = psz;
}
this function handles the marshaling for you
Don't be overcome by evil, but overcome evil with good
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Hi,
Is it possible to register an assembly using RegAsm.exe into other than HKEY_CLASSES_ROOT hive? or how can I install/uninstall an .Net automation add-in in non-admin mode?
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You can try the following:
Execute "C:\WINNT\system32\...\RegAsm myLib.dll /tlb:myLib.tlb /codebase"
The RegAsm executable is included as part of the .NET Framework.
*Do not register using REGSVR32.EXE
Thanks
Md. Marufuzzaman
Don't forget to click [Vote] / [Good Answer] on the post(s) that helped you.
I will not say I have failed 1000 times; I will say that I have discovered 1000 ways that can cause failure – Thomas Edison.
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Thanks. But if you use RegAsm.exe it will register in HKEY_CLASSES_ROOT which require Administrator privileges to do so.
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(1).NET Installation
.NET users can install the Example.dll in several ways including:
a) Add the .dll to the application folder of the application that references it.
b) Install the .dll to the Global Assembly Cache (GAC) located in the
Assembly folder (usually \WINNT\Assembly).
More information regarding the GAC can be found at:
This Link.
(2) COM Installation : Look at my previous post.
Thanks
Md. Marufuzzaman
Don't forget to click [Vote] / [Good Answer] on the post(s) that helped you.
I will not say I have failed 1000 times; I will say that I have discovered 1000 ways that can cause failure – Thomas Edison.
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i am having a string ,say"14p"....I want to take only the value 14 so that i could convert that to integer..how can i achieve this?
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n i want to split that string on occurence of any alphabets
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hi, I did this using regular expressions. I wrote a method to split a string by alphabetic characters.
14p gives array of one item 14
14eur gives an array of one item 14
14eur14pp15p gives an array of 3 items 14, 14, and 15
http://pastebin.com/f55499ed[^]
modified on Wednesday, December 30, 2009 2:56 AM
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