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I have some problems with destroying object after using.
1. How can I dispose the form with many events registered and some global fields that has to be destroyed? Or it will destroy automatically?
2. If my class registers some events from other objects (use +=), do I have to unregister all the events (use -=)on its Dispose() method? I afraid that the objects firing events will stay still in heap if I dont do that.
Thx for you answers.
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How do you know you have a problem? What are the symptoms?
It is my understanding that all managed references are cleaned up automatically, however, if you look up discussions online, you will see everyone argues about whether or not to call dispose() explicitly. Personally, I don't clean up unless I know its necessary, ie calling Close() on a connection. Even this doesn't really close the reference, but just frees it back to the connection pool.
Pualee
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Pualee wrote: about whether or not to call dispose() explicitly
Anyone saying you should not call Dispose explicitly is wrong wrong wrong!
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For my personal education, would you care to elaborate. This is a topic I have really been trying to grasp lately. I come from a different environment where I would expect to clean up all my references, but in C# I thought this was automatic. As stated earlier, I see strong opinions on both sides.
Is calling Dispose() just good practice, or is it actually necessary to prevent memory leaks and other problems?
Thanks,
Pualee
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It is just good practice.
As long as you are in managed code only (ie no unsafe code) memory is 100% managed for you.
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I disagree, it is not just good practice.
Calling Dispose on instances of a class that has a Dispose() method is mandatory;
the class may or may not hold unmanaged resources (encapsulation makes that
knowledge irrelevant), and Dispose() would take care of them.
So there are two basic rules:
- if you design a class that holds unmanaged resources, you MUST provide a
Dispose() method
- if a class offers a Dispose() method, you MUST call it when (or as soon as)
you are done with its instance(s).
Hope this helps.
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Hi again. I have a little problem with Drag and Drop.
I like to Drag an item from a comboBox to a Treeview. The item then should be displayed as Node in there.
Does anyone have suggestions how to do that?
I tried the following:
private void comboBox1_MouseDown(object sender, MouseEventArgs e)
{
if(comboBox1.Items != null)
{
comboBox1.DoDragDrop(dv[lc.SelectedIndex].Row["Typename"].ToString(),DragDropEffects.Copy);
}
}
But now when i click on the comboBox the List does drop down only for a milisec. So i can't select any other item then the first in the list.
Anyone any ideas?
Would be glad if anyone could give me some additional tips about drag and drop from a comboBox to a Treeview.
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This article (you can search articles, there's a lot of them) I found right here on CP:
ListBox to TreeView Drag and Drop[^]
it's about a listbox, but I'm pretty sure its applicable.
public object BufferOverFlow<br />
{<br />
__get { return BufferOverFlow; }<br />
__set { BufferOverFlow = value; }<br />
}
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i want the difference between dates in javascript...
like if i gave any date that should be compared with roday date and it should give the difference...
Suresh.R
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Why are you posting this on a C# forum?
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Better to post this in javascript forun
in c# you can get time span by simply subtract the DateTime values
My small attempt...
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sooreeagt wrote: hi just make it
Your title should reflect the problem you are having. It should NOT make demands of the other people using the forum.
sooreeagt wrote: javascript
You should pick your forum more appropriately. Your question has nothing to do with C#
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please seek an appropriate forum for the discussion.
your topic is not related to the one where you have posted.
Thanks.
Keshav Kamat 
India
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Ye its pity to read out of context matters in the wrong place.
Make sure that doesnot happen again.
Your life is what your thoughts make it.
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Hy!
I want to make a comboBox and when I want to select I have some time in Items like
08:00 AM
08:30 AM
09:00 AM
but I want to have the possibility to introduce a time like 08:05 AM,
10x 
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Then you just have to get the text from the editor and add it to the collection of items in the combobox (in some combobox related event or when pressing some button).
SkyWalker
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sorry,Your question is not clear...............
Try with DateTime values
My small attempt...
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mihksoft wrote: Help!
Everyone asking questions on this forum is looking for help. Please choose a more appropriate subject line.
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Could you please elaborate the question please. I could not get you properly!
Does that mean, that once you click on 8.00 am, u need to place a time with a difference of .05 units in some other control or something.?
Keshav Kamat
India
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Nope
I want to have the possibility to select a time from a drawlist, but I want to have the possibility to modify the date in the same control.
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what is the criteria for modification..........
If this is not a frequent action then you can simply remove and add new items using DataTime variables.................
but still ur question is not clear
My small attempt...
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Hi,
I want to send an email with C# over a Smtp server. I can send a E-Mail, but I've got problems with the Proxy-Server.
Is there any possibility to authenticate me with C# at the proxy?
regards
spotl
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All I could find was this, Someone with the same/similar issue, who was redirected to using WebServices.
How to send email through http proxy [Firewall] [^]
Visual Studio can't evaluate this, can you?
public object moo<br />
{<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}
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System.Drawing.StringFormat class allows you to justify a text to left, right, top, bottom, center and middle of the clip rect. But I saw in Microsoft Word an option to justify text to both margin, so every line of text has the same width.
I checked the System.Drawing.StringFormat properties and didn't find out how to do this.
Please help me, thanks alot.
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I've done a quick lookup, and you're right, it doesn't work, not for textbox, not for richtextbox. I read on a forum that it was just not possible at all, without using custom controls that you can buy/make.
Although I would hope that Framework 3.0 or GDI+ has this functionality somewhere. I can't help you with that, but you could point your question towards them (also).
public object BufferOverFlow<br />
{<br />
__get { return BufferOverFlow; }<br />
__set { BufferOverFlow = value; }<br />
}
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