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How did you 'configur' this service such that outsiders like myself are presented with a form that allows the 'Invoke' button. On my intranet the only time I am ble to get the 'Invoke' button displayed is if the service is running on localhost. If I open the URL for the service from a browser on another PC, I do not get the Invoke button. Thanks.
Chris Meech
We're more like a hobbiest in a Home Depot drooling at all the shiny power tools, rather than a craftsman that makes the chair to an exacting level of comfort by measuring the customer's butt. Marc Clifton
VB is like a toolbox, in the hands of a craftsman, you can end up with some amazing stuff, but without the skills to use it right you end up with Homer Simpson's attempt at building a barbeque or his attempt at a Spice rack. Michael P. Butler
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I've been looking for code or algorithm definitions on graph layout on the web and have come up empty handed. The only algorithm that came up was the Sugiyama Algorithm, but no definition or code was provided.
Is there anybody out there that could suggest an algorithm and where I could get some code or explanation on how it works.
Thanks...
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Nick Parker wrote:
Fernandes wrote:
Is there anybody out there that could suggest an algorithm and where I could get some code or explanation on how it works.
Right here, take a look at QuickGraph: A 100% C# graph library with Graphviz Support.[^].
- Nick Parker
Thanks a lot!!! It was the Graphviz visualization tool that I was looking for. And please... if anybody else has other suggestions, I wouldn't mind seeing them...
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Hi everyone,
I am pretty new to C#. So, this might be a really newbie question.
How can I have a member variable that is a reference.
I can have ref parameters as:
<br />
public void SomeFunc(ref int i)<br />
{<br />
i = 5;
}
However, I want to do something like this and I cannot figure out a way to do it:
<br />
public class Test<br />
{<br />
public Test(ref int i)<br />
{<br />
m_i = i;<br />
}<br />
private ref int m_i;<br />
}
Any suggestions would be appreciated.
Thanks,
Pankaj
Without struggle, there is no progress
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The code example that you gave has no need of the "ref" concept. If you remove "ref" from that sample, things will behave as you expect.
So, can you explain better what you are actually trying to accomplish?
John
"You said a whole sentence with no words in it, and I understood you!" -- my wife as she cries about slowly becoming a geek.
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Well, this does not work as expected (or my expectations are completely flawed)
public class Test
{
public Test(ref int i)
{
m_i = i;
m_i = 10; //this does not change the value of i in the calling func.
}
private ref int m_i;
}
Without struggle, there is no progress
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Are you trying to make m_i into a pointer to i? If so, then I understand what you're trying to do.
In explanation, the code is taking the value if i and assigning it to m_i, then taking the value of 10 and assigning it to m_i. The attempt to make m_i into a pointer to i is where your expectations have met the problem.
In C#, all class objects are handled "by reference". In other words, every time you to a "new Test()", you are getting a pointer to the real object. This means that whenever you put "myvar = something", you are setting pointers -- NOT copying objects. (Copy constructors only come into play when you explicitly use the "new" keyword.)
That said, you may already have a better technique to achieve your goal. However, you could do something like this:
public class Storage
{
int value;
}
public class Test
{
public Test(Storage val)
{
m_val = val;
m_val.value = 10;
}
private Storage m_val;
}
John
"You said a whole sentence with no words in it, and I understood you!" -- my wife as she cries about slowly becoming a geek.
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Ahhhhhhhh... I did not know that.
So, just to make sure that I understand...
Everytime that I pass parameters to functions etc., I am always passing a pointer to the object and not invoking a full copy of it.
If this is indeed the case, then I do not need the ref keyword.
Thanks,
Pankaj
Without struggle, there is no progress
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As Nick explained, though, value types (such as int, long, byte, enum, structs, etc.) are just that - value types. You pass a value to a method (not function - methods are "functions" that belong to an entity such as a class, interface, or struct). In almost all cases, this is just fine. When you pass a reference (everything else), a reference to the original object is stored in the stack (internal to the CLR). Using ref and out with value types is common, however, when P/Invoking native functions.
-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----
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With .NET you have value and reference types. Classes are always reference types. You don't need to declair int m_i as a reference type because it is a member of an object of type Test, so you are using it via an instance. Just make sure when you use methods inside your class that change that value that you mark the parameter as ref. Does that help.
- Nick Parker
My Blog
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Hi,
Can you show a small example, if you do not mind.
The things is I want to change the object in the calling function from this instance. I actually want a reference because I do not want to call the copy constructor on a large object.
I miss C++ 
Thanks,
Pankaj
Without struggle, there is no progress
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Here is a quick example:
public class Test
{
public Test(){}
public int MyNumber
{
get{return m_i;}
set{m_i = value;}
}
public int m_i;
}
public class SomeOtherClass
{
public SomeOtherClass(){}
public void ChangeValue(ref int i)
{
i = 5;
}
}
Test t = new Test();
SomeOtherClass soc = new SomeOtherClass();
t.MyNumber = 8;
soc.ChangeValue(ref t.m_i);
Console.Write(t.MyNumber);
- Nick Parker
My Blog
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What are the differences between them?
How do I make decision on choosing on of them in my project?
(ASP.NET (must be thin client)
-> {?? WebSvc/Remoting}
-> Data Access Layer(ADO.NET)
-> DB)
Is there any link on MSDN or anywhere on the web which explains in detail.
TIA
Promise only what you can do. And then deliver more than what you promised.
This signature was created by "Code Project Quoter".
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Web Services by nature are one-way communications since they use HTTP. .NET Remoting allows you to use TCP or HTTP channels, so communications can be two-way (i.e., the server can also talk to the client). .NET Remoting also allows you to chain sinks together (know as Aspect-Oriented Programming, or AOP) that allows you to work on the messages and add or change things as the formatted messages go through the sink chain.
.NET Remoting also allows you to use a binary formatter as opposed to a SOAP formatter (which Web Services use) which is much faster when serializing object graphs and uses less bandwidth to transmit.
For a comparison of ASP.NET/Web Services vs. .NET Remoting, see http://msdn.microsoft.com/library/en-us/cpguide/html/cpconchoosingcommunicationoptionsinnet.asp[^]. This also contains links to more information regarding each of the technologies.
-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----
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I was hoping that you would reply. 
Thanks for clarifying me.
Meanwhile I found a link[^] at MSDN but that's old link, that too related VB.
Promise only what you can do. And then deliver more than what you promised.
This signature was created by "Code Project Quoter".
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Hi everyone,
I'm using VS.NET 2003 to develop WIndows Forms applications - my question is, when I add a user control to a control library project that is part of my solution, it automatically appears in the "My User Controls" section of the VS toolbox. Is it possible to have VS automatically recognize my custom controls as well or not?
Thanks 
rado
Radoslav Bielik
http://www.neomyz.com/poll [^] - Get your own web poll
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In my experience that happens automatically when you compile your control.
John
"You said a whole sentence with no words in it, and I understood you!" -- my wife as she cries about slowly becoming a geek.
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For me it happens only for user controls upon compilation, but not for custom controls  Is it possible to configure it somewhere?
rado
Radoslav Bielik
http://www.neomyz.com/poll [^] - Get your own web poll
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I didn't understand that there was a difference between the two. What do you mean by "custom control"?
John
"You said a whole sentence with no words in it, and I understood you!" -- my wife as she cries about slowly becoming a geek.
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Sorry for the confusion and thanks for the response, when you choose to "Add User Control" to the project, and select the "Custom Control" template, the new control is derived from System.Windows.Forms.Control, whereas when you choose the "User Control" template (this one is preset by default), the new control is derived from System.Windows.Forms.UserControl.
The Heath's response below provides a detailed answer to my question and explains why only the controls derived from UserControl appear in the toolbox.
rado
Radoslav Bielik
http://www.neomyz.com/poll [^] - Get your own web poll
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Ah, yes. Basically, if you simply want a new control to use on your forms, inherit from UserControl. If you want a control that is not designable, then inherit directly from Control. (There are other technicalities, but the intended goal of the control is what matters most.)
John
"You said a whole sentence with no words in it, and I understood you!" -- my wife as she cries about slowly becoming a geek.
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Thank you for your response. But when I want to create something like an owner drawn button, I guess the best way would be to derive from System.Windows.Forms.Button to inherit most of the button functionality, which will make my new button control not designable. Is this correct, or is there a better approach?
Thanks again,
Rado
Radoslav Bielik
http://www.neomyz.com/poll [^] - Get your own web poll
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Since Button is already designable, I believe that a class inheritting from Button will be as well. Go ahead and try it if you haven't already. (Just add a new UserControl to your project, then change "UserControl" to "Button". See what happens.)
John
"You said a whole sentence with no words in it, and I understood you!" -- my wife as she cries about slowly becoming a geek.
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