jfo's Splitbutton... - C# Discussion Boards

PhilDanger10-Jul-07 10:58

10-Jul-07 10:58

private void ExecuteUser()//Function in Utility
{
      if(txtUserCode.Text != "while(true){}"){
        //run!
      }
}

Feel free to use this as a safeguard after you get the rest of it figured out Smile | :)

Re: Execute User written Code

Ketty Avashia10-Jul-07 11:32

Ketty Avashia

10-Jul-07 11:32

I am not quite sure if I understand the idea completely.
Please advice.

Ketty

Re: Execute User written Code

PhilDanger11-Jul-07 2:58

PhilDanger

11-Jul-07 2:58

Just a joke about the dangers of letting users execute their own code -- the code I wrote "checks" for an infinite loop.

Re: Execute User written Code

Ketty Avashia11-Jul-07 5:34

Ketty Avashia

11-Jul-07 5:34

:-DJokes are fine but I am looking for serious comments on this issue

Ketty

Re: Execute User written Code

Cyrilix11-Jul-07 8:28

Cyrilix

11-Jul-07 8:28

If you just want to compile code and execute it, you can always invoke the compiler with the correct command line options when the user would like to execute the code, and then start / wait on the process that you just compiled. That's probably the most general way to do things. I wouldn't advise it though, as I don't see any practical application. If, on the other hand, you want to do some kind of scripting, you could always encapsulate existing functions and dynamically call them by parsing a script, using a virtual address space within your actual program for the storage of stack variables and dynamically allocated memory.

question???

sarvenaz8410-Jul-07 8:47

sarvenaz84

10-Jul-07 8:47

you said goole maps will work if the pc is online.what should I do if I want to work offline?
then you said somthing about Dundas and you assume it sells maps offline.would you please explain about it?How can I reach to these maps?

Re: question???

Christian Graus10-Jul-07 9:06

Christian Graus

10-Jul-07 9:06

First of all, you got lucky, if I wasn't online, no-one would know what you were talking about.

second, if you're offline, google maps can't work, I said that.

third, the ads for Dundas are on this site all the time, and google is all you need, if you can't work out to try www.dundas.com.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

jfo's Splitbutton...

Faredegyn10-Jul-07 8:12

Faredegyn

10-Jul-07 8:12

Well, it's an updated version that was done and can be found at http://wyday.com/blog/2007/csharp-splitbutton/

anyways, I have it implemented just fine, but I am having difficulty constructing an event handler to deal with the selection that the user makes.

The code works by constructing a a contextMenuStrip, then adds Items to it. I am wondering how do I set up an event handler that takes the chosen item and when the button is clicked, does a particular action. If I can at least get a hint to what I need to implement to set it up, that would be great.

If you need more code, just ask.

Thank you,

Fare

Re: jfo's Splitbutton...

Faredegyn11-Jul-07 3:24

Faredegyn

11-Jul-07 3:24

Ok let's try this again...

(sorry if this violates some sort of double post law)

<<designer class="">>

<br />
this.splitButton.ContextMenuStrip = new<br />
System.Windows.Forms.ContextMenuStrip();<br />
this.splitButton.ContextMenuStrip.Items.Add("Item1");<br />
this.splitButton.ContextMenuStrip.Items.Add("Item2");<br />
this.splitButton.ContextMenuStrip.Items.Add("Item3");<br />
<br />
<br />
this.splitButton.Click += new System.EventHandler(this.cmdSplitButton_Click);<br />

<>

<<splitbutton class="">>

<br />
        protected override void OnMouseUp(MouseEventArgs mevent)<br />
        {<br />
            if (!showSplit)<br />
            {<br />
                base.OnMouseUp(mevent);<br />
                return;<br />
            }<br />
<br />
            if (mevent.Button == MouseButtons.Right)<br />
            {<br />
                ShowContextMenuStrip();<br />
            }<br />
            else if (m_SplitMenu == null || !m_SplitMenu.Visible)<br />
            {<br />
                SetButtonDrawState();<br />
<br />
                if (Bounds.Contains(Parent.PointToClient(Cursor.Position)) && !dropDownRectangle.Contains(mevent.Location))<br />
                {<br />
                    OnClick(new EventArgs());<br />
                }<br />
            }<br />
        }<br />

<>

<>

<br />
private void cmdSvAllImg_Click(object sender, EventArgs e)<br />
{<br />
}<br />

<>

My question is what do I need to do so that when the button is clicked, it does an action that corresponds with the selection of the splitbutton (e.g if the user selected Item1, it would do an Item1 specific job, and Item2 selection would do an Item2 job)

If any other info is needed, just let me know. The splitButton class can be downloaded at http://wyday.com/files/SplitButton.zip

Thank you again,

Anthony Novak

C# Having the Font resize accordingly with the label and the form it is in.

Minosknight10-Jul-07 7:12

Minosknight

10-Jul-07 7:12

I've looked at all the properties and tried anchoring it to all the sides. Looked up auto-sizing and found out how to do it for the label but not to make the text in the label enlarge or shrink when I re-size the box. Any ideas?

Re: C# Having the Font resize accordingly with the label and the form it is in.

Christian Graus10-Jul-07 7:15

Christian Graus

10-Jul-07 7:15

You'd need to track the scale change and change the font size yourself.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: C# Having the Font resize accordingly with the label and the form it is in.

Minosknight10-Jul-07 7:18

Minosknight

10-Jul-07 7:18

I'm wondering if there is a way so I don't have to change the font manually every time I wanna change the size of the window.

Re: C# Having the Font resize accordingly with the label and the form it is in.

Christian Graus10-Jul-07 7:32

Christian Graus

10-Jul-07 7:32

I guessed that. I'm saying that I don't believe so.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

How to trap unhandled exceptions

Glenn E. Lanier II10-Jul-07 6:45

Glenn E. Lanier II

10-Jul-07 6:45

Hi. I'm trying to catch all unhandled exceptions in my application (so they can be logged and the user presented with a "nice" message instead of some confusing "computer-y" message.

I do the following in my WinForm application:

-- In the constructor
// Create the unhandled exception handler
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.UnhandledException += new UnhandledExceptionEventHandler(OverAllUnhandledHandler);

-- the method
static void OverAllUnhandledHandler(object sender, UnhandledExceptionEventArgs args) 
{
   Exception e = (Exception) args.ExceptionObject;
   logger.Log(LogLevel.Fatal, e.ToString());

   MessageBox.Show("Please check error logs for details", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

If I create a divide by zero error, it is trapped (either in the constructor or in a button click event. I have even created a thread that starts and causes the error; it is still trapped. However, some errors are still popping up in the standard "Microsoft .NET Framework" dialog, with the text "An unhandled exception has occurred in your application.....".

Any idea how to get all unhandled exceptions (I know, code better to catch all exceptions) to be caught by this OverAllUnhandledHandler method?

Thanks for any tips.

--G

Re: How to trap unhandled exceptions

Christian Graus10-Jul-07 6:59

Christian Graus

10-Jul-07 6:59

I put my main code in a try/catch and handle threaded exceptions, it's a long time since my app blew up without logging a nice error for me and telling the user of the same.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: How to trap unhandled exceptions

Glenn E. Lanier II10-Jul-07 7:57

Glenn E. Lanier II

10-Jul-07 7:57

Thanks -- haven't been handling threaded exceptions -- giving that a shot.

Do you mean you put a try/catch around the

Application.Run(formName);

in Main()?

Re: How to trap unhandled exceptions

Christian Graus10-Jul-07 8:11

Christian Graus

10-Jul-07 8:11

Yes, that's all I did initially, then as I am multithreaded, I had to add code to handle exceptions in threads.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: How to trap unhandled exceptions

Glenn E. Lanier II10-Jul-07 10:14

Glenn E. Lanier II

10-Jul-07 10:14

Great. Thanks. I've included both the try/catch and the ThreadException code -- we'll see how it runs this afternoon!

Re: How to trap unhandled exceptions

Daniel Grunwald10-Jul-07 8:17

Daniel Grunwald

10-Jul-07 8:17

I handle exceptions using:
AppDomain.UnhandledException,
System.Windows.Forms.Application.ThreadException,
and a catch-all handler in void Main().
This gets all unhandled exceptions (well, except for some that are swallowed by Windows Forms/COM in the Drag* events - put catch handlers in all Drag* event handlers).

Re: How to trap unhandled exceptions

Glenn E. Lanier II10-Jul-07 10:16

Glenn E. Lanier II

10-Jul-07 10:16

Thanks Daniel -- this is now how the application works (I previously only had AppDomain.UnhandledException, thinking that it would get all unhandled exceptions). Since I don't (currently) do any drag events, I should be OK (but I'll keep it in mind for future projects).

--G

DataGridView

mehrdadc4810-Jul-07 6:45

mehrdadc48

10-Jul-07 6:45

Hi.
I have a DataGridView, now I want to use edit feature of it.
for save changes to DB, the way that I know is that read all rows of DataGridView and update all rows in DB (even rows that have no changes)
What is better way, that only changes be updated?

Best wishes

Re: DataGridView

rahvyn610-Jul-07 9:40

rahvyn6

10-Jul-07 9:40

I use this in the CellLeave event to update the underlying dataAdapter. Before calling this however, I loop through the grid to ensure that no values being updated are going to throw up errors.

<br />
dataAdapter.Update(table);<br />

Newbie: Calling an overriden method from a child class...

Phillip Hodges10-Jul-07 5:17

Phillip Hodges

10-Jul-07 5:17

I hope that sounds right? I will explain...

I have built a class (lets call it 'X') that constructs a StringBuilder and then passes it back. All is OK except within this class it calls a number of methods from a base class higher up.

Here comes the tricky bit. Class 'Z' overrides a number of these base class methods, then calls 'X'.
There are also several versions of 'Z' each doing similar things but with subtle differences.

Question: Is there a way of calling the overridden methods in the parent class 'Z' from the child 'X'...?

Thanks in advance,

Phil

"Rules are for the obedience of fools and the guidance of wise men"

Re: Newbie: Calling an overriden method from a child class...

Colin Angus Mackay10-Jul-07 5:19

Colin Angus Mackay

10-Jul-07 5:19

Phillip Hodges wrote:
Is there a way of calling the overridden methods in the parent class 'Z' from the child 'X'...?

Yes, just call them. If they are declared as virtual in the base class and override in the derived class then the correct version will be called. i.e. The version defined in the concrete class. That is to say the version of the real object, not its base.

Upcoming events:
* Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ...

"I wouldn't say boo to a goose. I'm not a coward, I just realise that it would be largely pointless."

Ready to Give up - Your help will be much appreciated.

My website

Re: Newbie: Calling an overriden method from a child class...

Phillip Hodges10-Jul-07 5:32

Phillip Hodges

10-Jul-07 5:32

Thanks for the quick response... Yeah, I made a silly mistake... It is working fine now...

Thanks again,

Phil

"Rules are for the obedience of fools and the guidance of wise men"

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