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To reduce the size of the form so that the GroupBox is not visible:
<br />
form1.Height = groupBox1.Top + (form1.Height - form1.ClientSize.Height)<br />
If the group box should be visible just add the height of it:
<br />
form1.Height = groupBox1.Top + (form1.Height - form1.ClientSize.Height) + groupBox1.Height<br />
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Thanks Robert, I tried Height=GB.Top, but I didn't add the client size difference...thanks.
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I am new to C# and I know this may be easy for most but I have a question and it may have to do more with variables between form.cs files and other cs files, but here goes. I know the easiest way to add custom buttons to a messagebox is to use a form and make my own. I am looking for a way to have "yes, yes to all, no, no to all" buttons on a messagebox. My question is, if I have a class not in a form cs file and I need to display this messagebox, how do I do this and make it modal, and how do I catch the values (in the none form cs class) of the button that is clicked by the user.
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Calling ShowDialog of your MessageBoxForm will always show it modally and wait until the MessageBox is closed. As your MessageBox will have more result types than DialogResult can offer you will have to make your own enumeration and create a property where you can read the result form after the MessageBox is closed, e.g.:
MyMessageBox mmb = new MyMessageBox();
mmb.ShowDialog();
switch (mmb.Result) {
case MyMessageBoxResult.Yes:
case MyMessageBoxResult.YesAll:
...
}
To make the handling like the one of the original MessageBox just declare a static function in your MessageBox class which returns the result.
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Hi All,
I've created a class library that interops with COM to allow it to be consumed by a COM application. From my development machine everything works great, the COM app recognizes and executes the library. However, when I try to deploy on a machine other than my own, the COMP application does not recognize the class library at all.
I've tried assigning a Strong name to the assembly, then user REGASM on the dll to no avail. I suspect I may need to register the dll with regsvr32 but I am uncertain about how to prepare my class library (I know I need to use GUIDGEN.exe to assign a GUID in an attribute somewhere in the code)...
Any pointers?
Thanks, Rein
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MSDN has a good article on just that, here.
Tech, life, family, faith: Give me a visit.
Judah Himango
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This seems like such a stupid question.... but how do i do it?
(I'll be kicking myself when someone gives me the answer)
Cheers
Cata
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Elementary my dear Cata:
byteArray = BitConverter.GetBytes(varLong);
Let the kicking begin. 
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*kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick* *kick*
*ow*
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I have a Form (MainForm) that loads a usercontrol (UserMenu) as a main menu, I do NOT want to show this as a dialog, but I have no way to fire an event on MainForm from a command button on UserMenu without instantiating a new MainForm.
There are properties set on the MainForm that need to be used. This is why I cannot simply instantiate a new MainForm.
I have considered delegates, but honestly struggling to wrap my mind around the concepts. Also, I know the showDialog is the simplist way, but cannot use it for various other reasons.
Any suggestions would be appreciated.
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The best mechinism is delegates/events. The are pretty simplistic to use but, if you want to wimp out  , just pass the form to the UserMenu and make the necessary methods public.
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I definitely want to learn... do you know any good resources/tutorials on delegates/events. I have read through c# Unleashed and Windows Forms Programming in c#, but still am struggling to comprehend. Perhaps I am over analyzing this...
I will continue to read up on it.
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This not MS way (they use EventArgs as the base) but here is a short snippet from one of my early project that may lead you in the right direction.
#namespace TabCode
{
public class TabChoice
{
public string Text;
public bool Active;
public TabChoice(string text, bool active)
{
Text = text;
Active = active;
}
}
public delegate void TabPanelChangeEvent(TabChoice choice);
public class TabPanel : Panel
{
private ArrayList _choices;
public TabPanelChangeEvent Change = null;
private void FireChange(int index)
{
if (Change != null)
{
Change((TabChoice)_choices[index]);
}
}
}
}
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Thanks,
I was able to build a working delegate, the problem is I still have to instantiate a new copy of the form. I need to use the already instanciated copy of it because it has parameters and values that I need to use.
Any other thoughts??
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Why don't you just tell the UserControl the parameters. If they change, update the UserControl.
I am not clear on what you are attempting to do but, creating a new copy of the form does not seem like a proper solution.
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OK... my form loads a usercontrol that has a list of radiobuttons. This is not a modal form as they are always available for clicking. A command button on that form launches code on the main form. I have to know what radio button was selected and pass that back to the main form.
Here is the code so far:
In usercontrol:
public delegate void delRunStep(string name);
private void cmdRunStep_Click(object sender, System.EventArgs e)
{
//find out what radiobutton is selected
MainForm mf = new MainForm();
//This does not work as it makes new Mainform and looses all Data.
delRunStep run = new delRunStep(mf.RunStep);
run(myString);
}
In the main form:
public void RunStep(string StepName)
{
//do code
}
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Why does the UserControl need to know what radio button is selected on the main form? Could it not just pass back that the command button was clicked and let the main form decide what to do with the information?
Otherwise:
If the UserControl has to be notified of the state of the radio buttons then let it listen.
public void RegistureRadioButton(RadioButton rb)
{
rb.CheckChanged += new EventHandler(OnCheckChange);
}
private void OnCheckChange(object sender, EventArgs ea)
{
RadioButton rb = (RadioButton)sender;
if (rb.Checked)
{
if (rb.Text == "Choice 1")
{
}
}
}
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The Userform has the Radiobuttons. But what you are saying will work,if I switch it around and make the main form know what radiobutton is selected. I will keep on working on it. I think I have enough info to make it work.
Thanks.
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It may be that I dont really get the problem but as Micheal already mentioned you could just pass the existing form to your user control. Give the usercontrol a property where the form can be set and than use this instance:
(within MainForm)
<br />
UserMenu menu = new UserMenu();<br />
menu.MyMainForm = this;<br />
This is probably the easiest way, but an event should be better. For that you have to decalre an event in UserMenu and consume it on the MainForm (just like you would handle the Click event of a Button).
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I want to do it the best way. I added code in the above post. I do appreciate all the help.
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I used the tutorial at http://www.codeproject.com/csharp/cpimpersonation1.asp to try to perform an impersonation.
The code seems to run fine, and when I execute it there must be some sort of sign on happening. The reason I say this is because when I actually do try to sign on with incorrect user name or password it does throw an exception (as it should).
Anyways, when the code goes to access some file off of a local computer that only my account should have access to, it doesn't work, and the program says it failed to open the file sucessfully. Any suggestions?
Cheers,
Jim
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Anotehr wierd thing happens. When I execute the code, and then try saving a file (under the guise of my new user) it doesn't seem to work. Basically, it saves it under its old identity.
Any ideas?
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Hello,
How can i perform a Fade / Swipe of objects in directX. I'm creating a NarrowCasting software that is like a powerpoint presentation.
I'm using Direct3D because DirectShow is decapricated.
Please could you help me,
Greetz
Squall Blade
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I've got a network stream. I have it working both Synchronously, and Asynchronously. My problem is this. I'd like to serialise objects to it. Simple enough Synchronously, serialise at one end, deserialise at the other.
But i'm not entirely sure what's the best approach.
What are the benefits of each? I can't see an easy way to serealise something to an Asynchronous stream. I'd need to declare how many packets and of what size I am sending, before I begin the send, then i'd need to serialize to a memory stream before reading the packets into a buffer and sending them down the network stream. While at the same time, keeping track of what i've sent so far, and how much is left, as well as what other objects are queued to follow the current one. This strikes me as slow and inefficient.
The benefits of asynchronous network handling is the event handles and system thread that manages them, meaning I don't need to poll for pending data.
Ultiately, given these tradeoffs, what is the standard way of handling this situation in .net and C#? I'm leaning towards the simple serialization approach, but if i was say, sending a large file, it could clog up the network for a long time.
What do you advise?
Cheers
Cata
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Is it considered good coding practice to use goto statements in c# ??
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