C# Discussion Boards - CodeProject

7-Jul-09 18:58

Hi,

for such questions there are IMO three possible answers:
- documentation
- reflection
- experiments

I would spend 10 minutes on documentation, try reflection for 10 minutes, then start a series of little experiments, trying out some extreme cases since those are most likely to show the differences.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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form

Member 25451767-Jul-09 18:17

Member 2545176

7-Jul-09 18:17

how to prevent same forms laod agin and agin from MDI???

Re: form

K03067-Jul-09 18:21

K0306

7-Jul-09 18:21

use the below sample code.

bool flag = false;
FrmSearch search = new FrmSearch();
foreach (Form f in this.MdiChildren)
{
if (f.Name.ToString() == search.Name.ToString())
{
f.Focus();
flag = true;
break;
}
}
if (flag == false)
{
search.MdiParent = this;
search.Show();
}

Regards,
Karthik K...

Re: form

Luc Pattyn7-Jul-09 18:54

Java's DefaultTreeModel equivalent in c#

7-Jul-09 18:54

KKarthik2000 wrote:
if (f.Name.ToString() == search.Name.ToString())

AFAIK string.ToString() is a waste, it just returns

string<br />
<br />
:) <br />
<br />
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vidhyaravichandar7-Jul-09 18:01

vidhyaravichandar

7-Jul-09 18:01

Hi,

i need to convert a Java project to c#.

In java we have defaultTreeModel and defaultMutableTreeNode, jTable, JTree, jscrollpane is there any equivalent component in c# which performs same as the above mentioned java components.....?? Confused | :confused:

I know there is treeview in c#... can i use tat one?

If so, plz tell me abt those components.....

thank u Smile | :)

Re: Java's DefaultTreeModel equivalent in c#

N a v a n e e t h7-Jul-09 18:17

N a v a n e e t h

7-Jul-09 18:17

vidhyaravichandar wrote:
I know there is treeview in c#... can i use tat one?

TreeView should do all those and much more. Give it a try. Smile | :)

Navaneeth

How to use google | Ask smart questions

Re: Java's DefaultTreeModel equivalent in c#

Member 25451767-Jul-09 18:23

Member 2545176

7-Jul-09 18:23

How to use tree view can give a details

Re: Java's DefaultTreeModel equivalent in c#

Mycroft Holmes7-Jul-09 19:41

Mycroft Holmes

7-Jul-09 19:41

Get a book
Read some doco
Get some samples and work through them there are plenty around.

Never underestimate the power of human stupidity
RAH

Icon problems

nik1217-Jul-09 16:12

7-Jul-09 16:12

For a very long time now I've been having a problem with making an icon appear on the top-left part of my form. I have created a .ico file and it works for my .exe icon but whenever I try it on my icon property of my form it doesn't work. Anyone have any ideas why I'm having this problem?

Christian Graus7-Jul-09 17:10

Christian Graus

7-Jul-09 17:10

An icon file can contain icons in a number of different sizes. You probably are not including one in the size needed for the corner of the form ( I am guessing 16x16 or 32x32 )

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Luc Pattyn7-Jul-09 18:23

7-Jul-09 18:23

As Christian said, ICO files can contain several icons at different sizes (but meant to represent the same thing). Which "sub-icon" gets used depends on the situation AND the Windows version.
And Vista introduced new sizes.

This[^] and this[^] gives some details.

I never encountered a situation where an icon wasn't showing; I usually design it at 32*32 and that seems to work for me every time (that is on XP and Vista). However the favicon.ico shown in a browser's address bar has to be 16*16.

On XP hovering an ICO file shows a tooltip, which mentions the size iff there is only one. Don't know for Vista.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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Cracked-Down7-Jul-09 18:34

Cracked-Down

7-Jul-09 18:34

Are you using Visual studio to create icon? If yes I would suggest use some other software to create the icon. I struggled with the same kind of problem,but got rid of it using some freeware icon generator tool(I do not remember the name of that software). you will get it on the net for free
Smile | :)

Mirko19807-Jul-09 22:34

Mirko1980

7-Jul-09 22:34

Personally, I use IcoFX. It's freeware and has many useful features (such as extracting icons from existing files).

DaveyM697-Jul-09 22:19

DaveyM69

7-Jul-09 22:19

I use IcoFX if that's any help

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)

nik1219-Jul-09 10:52

'Sharing' a bindingsourse with a form and a usercontrol on that form

9-Jul-09 10:52

Well thank you so much! It turns out that with IcoFX the icon works well. Smile | :)

Glen Harvy7-Jul-09 15:51

Glen Harvy

7-Jul-09 15:51

Hi,

I have a winform that has a grid linked to a bindingsource. The winform also has a usercontrol on it that also contains databound data linked to the same datatable but via a different bindingsource.

There is a definite need to have the separate usercontrol although life would be much easier without it <sigh>. The usercontrol is loaded onto the winform as a module contained within the winforms tab pages collection.

Anyhow, what I need to do is use the winforms grid as the navigator for the usercontrols binding source.

I have tried everything I can think of, the 'easiest' being to change a static variable on the usercontrol and then have a static method on the usercontrol change the bindingsource position but the bindingsource itself needs to be made static and that's not possible as far as I know?

Can someone come up with some code that will do the trick.

Thanks.

Glen Harvy

Re: 'Sharing' a bindingsourse with a form and a usercontrol on that form

Mycroft Holmes7-Jul-09 19:47

Mycroft Holmes

7-Jul-09 19:47

I am working on something that passes a DataGridView to a used control which then accesses the bindingsource of the DGV. I do this by having a public property on the UC of type DataGridView and passing the DGV on form load. I imagine you could do the same with a bindingsource.

Never underestimate the power of human stupidity
RAH

Re: 'Sharing' a bindingsourse with a form and a usercontrol on that form

Glen Harvy8-Jul-09 13:06

Glen Harvy

8-Jul-09 13:06

Yes - thanks for that.

I reworked http://msdn.microsoft.com/en-us/library/ms404320.aspx[^]

and passed the bindingsource to the control. Works well.

Regards,

Glen Harvy

An odd predicament with windows forms

nik1217-Jul-09 15:30

7-Jul-09 15:30

Hello I'm new to C# so you might have to bear with me a little bit but here is my problem. I am trying to make a windows form so that when you press a button, all the buttons disappear from the form. When that happens I am trying to make a different button take its place. You might find this a strange thing to do... but I have my reasons Poke tongue | ;-P

. This is as far as I have gotten.

Making a new button...
Button newButton = new Button(); (tell me if this is even works, because I'm not really all that sure if it does).

And that's all I can come up with. I've tried really hard to make that button appear after the others ones are disposed and I THINK it might have something to do with newButton.Location.X/Y. But that's just a guess. So it would be greatly appreciated if anyone could offer me any help.

I do not ask for code I simple ask for a little guidance to my next step.

Thanks, Nik!

Jacob Dixon7-Jul-09 15:36

Jacob Dixon

7-Jul-09 15:36

After you create the button Button newButton = new Button() you have to set its x and y coordinates, width and height, and add it to the form: this.Controls.Add(newButton);

nik1217-Jul-09 15:42

Re: An odd predicament with windows forms [modified]

7-Jul-09 15:42

Well I thank you greatly for that much of help and I must say that it helped but I am not sure how to set the X and Y variables. I have tried newButton.Location.X, but when I try setting it equal to an int it says that I can't modify the return variable of Location because it is not a variable. Do you know a way to go around it?

harold aptroot7-Jul-09 16:14

harold aptroot

7-Jul-09 16:14

It probably returns a struct (Point), modifying a field of the struct would be kinda useless since as soon as you leave the current scope that struct will be gone (or even if isn't, it's not the same struct as the control has, but a copy)
So, what should work: copy the Location to a local, change the X, assign it back to newButton.Location.

hey, who downvoted this Hmmm | :|

It would work. Nothing bad about it either.

Last modified: 11hrs 5mins after originally posted --

Luc Pattyn7-Jul-09 18:29

7-Jul-09 18:29

Hi,

to set the location of a Control do one of these:

myControl.Location=new Point(x,y);
myControl.Bounds=new Rectangle(x,y,width,height);

Both Location and Bounds are structs, i.e. value types; gettin such struct and modifying it won't cut it, you have to provide a struct with the new values.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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