Re: Inconsistent Marshalling size - C# Discussion Boards

Gepepet8-Jun-10 3:00

8-Jun-10 3:00

Hello, I need of graphic objects (for example panel, picture box, etc..) that they can free-moving on a Form used the mouse and when these objects are a short distance, they must hook up each other like a magnet. For example, we can use two panel on a Form (panel 1 and panel 2). Panel 1 is on the left of Form and panel 2 is on the right of Form. If I push the bottom left of the mouse on the panel 1, I can move panel 1 to panel 2. When panel 1 is a distance of 10 pixel from panel 2, the right border of panel 1 will hook up to left border of panel 2, like a magnet.

Re: magnetic object

Not Active8-Jun-10 3:16

Not Active

8-Jun-10 3:16

There is nothing out of the box that will do this. You're on your own. The closest functionality for comparison would be the snap to grid feature in the designer. Is this a standard winform or WPF?

I know the language. I've read a book. - _Madmatt

Re: magnetic object

Johnny J.8-Jun-10 3:19

Johnny J.

8-Jun-10 3:19

Here are two articles that describe something similar, only for forms. You might be able to apply the same technique for panels, but I haven't tried myself...

SnapFormExtender - a magnet for your MDI child forms[^]

SnapWindows - StickyWindows reloaded[^]

Bing Maps AJAX control in Visual C# form application

grmihel28-Jun-10 2:57

grmihel2

8-Jun-10 2:57

Hi folks,

I'm trying to implement some kind of map feature to my winform application, and in my search I have seen on the following possibilities:
- Google Maps
- Bing Maps

I found that Bing maps perhaps was the closest choice, since I was developing in Visual C#. But, I have searched and searched, and both on MSDN and in this CP-article (a little Virtual Earth Control[^]) there is no explanation on how to start, and add the correct .dll reference?

Can any1 help how I registere the right place, and download the RIGHT .dll for using AJAX bing maps controls? I think thats the only thing, stopping me in developing a map feature in a webbrowser control, to my C# winforms application Frown | :(

Re: Bing Maps AJAX control in Visual C# form application

jwiese_ms8-Jun-10 5:34

jwiese_ms

8-Jun-10 5:34

I'd suggest you use the Bing Maps WinForm control from CodePlex: http://bingmapscontrol.codeplex.com/[^]

The project has a few videos that will show you how to get started with the control and you should be able to get up and running pretty quickly with it.

John Wiese
ISV Architect Evangelist - Microsoft

TWITTER: @johnwiese
BLOG: http://blogs.msdn.com/usisvde

Re: Bing Maps AJAX control in Visual C# form application

grmihel28-Jun-10 5:47

grmihel2

8-Jun-10 5:47

Thank you, I'll study it and re-open the question if it wasn't enough Smile | :)

Inconsistent Marshalling size

hairy_hats8-Jun-10 1:38

hairy_hats

8-Jun-10 1:38

Hi all,

I've got a struct which I'm controlling the Marshalling of using

[StructLayout( LayoutKind.Explicit, Size = 32)]

However I've found that while Marshalling it to a byte[] on a desktop XP machine produces the expected 32 bytes, on an ARM-based WinCE machine it only produces 28 bytes.

How can I get consistent Marshalled byte sizes across platforms, and why doesn't the WinCE .NET CF Marshal it the way I've specified?

TIA Smile | :)

Re: Inconsistent Marshalling size

Luc Pattyn8-Jun-10 2:07

Luc Pattyn

8-Jun-10 2:07

MSDN on StructLayout.Size is a bit bizarre. It holds a remark "This field must be equal or greater than the total size, in bytes, of the members of the class or structure. This field is primarily for compiler writers who want to extend the memory occupied by a structure for direct, unmanaged access. For example, you can use this field when working with unions that are not represented in metadata directly."

Which one can read as: the actual size should not exceed the specified size value.

Therefore I recommend that you consider adding dummy members to your struct to obtain the exact size you want.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read formatted code with indentation, so please use PRE tags for code snippets.

I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).

Re: Inconsistent Marshalling size

hairy_hats8-Jun-10 2:36

hairy_hats

8-Jun-10 2:36

Such joy. Thanks Luc!

Re: Inconsistent Marshalling size

Luc Pattyn8-Jun-10 2:43

Luc Pattyn

8-Jun-10 2:43

you're welcome.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read formatted code with indentation, so please use PRE tags for code snippets.

I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).

Re: Inconsistent Marshalling size

hairy_hats8-Jun-10 2:50

hairy_hats

8-Jun-10 2:50

It's still a bit rubbish that they give you the ability to specify how the conversion is handled, but then ignore it if they feel like. Oh well, it's working fine with padding. Big Grin | :-D

Problem of controling a listview in another form

imbiz8-Jun-10 1:30

imbiz

8-Jun-10 1:30

There is a Listview in Form1, named "listview1", I try to add a item from Form2, it doesn't work. But no error prompts were given.I have changed the type to "public" for listview1.

In Form2, the code is:

ListViewItem li = new ListViewItem();
li.SubItems.Clear();
li = new ListViewItem(new string[] {"Richard","28","Male"});

Form1 form1 = new Form1();
form1.listView1.Items.Add(li);

It passed successfully without errors, but the listview1 did nothing. where does the problem lie in? Thanks.

Re: Problem of controling a listview in another form

Luc Pattyn8-Jun-10 1:41

Luc Pattyn

8-Jun-10 1:41

imbiz wrote:
Form1 form1 = new Form1();

There is your problem. Do you know what new means? It means: create another instance of Form1, i.e. a second Form1 looking very much like the first, but not visible as you did not call Show() on it. You do not want another Form1, you want the original one. So pass a reference, do not use new here.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read formatted code with indentation, so please use PRE tags for code snippets.

I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).

Re: Problem of controling a listview in another form [Waiting online....]

imbiz8-Jun-10 2:36

imbiz

8-Jun-10 2:36

But how to use listview1 in Form1 directly? It seems we can't use "Form1.listview1.Items..." in Form2.

modified on Tuesday, June 8, 2010 8:52 AM

Re: Problem of controling a listview in another form [Waiting online....]

Pete O'Hanlon8-Jun-10 3:46

Pete O'Hanlon

8-Jun-10 3:46

One method to look at would be to use an event in Form2 and subscribe to it from Form1. This event would be used to notify Form1 that there was a new value that needs adding to the listview.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

Re: Problem of controling a listview in another form [Waiting online....]

imbiz8-Jun-10 4:23

imbiz

8-Jun-10 4:23

Thank you , but I'm still puzzled.

Re: Problem of controling a listview in another form [Waiting online....]

Pete O'Hanlon8-Jun-10 4:43

Pete O'Hanlon

8-Jun-10 4:43

Why? Have a look in this[^] article for some help.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

Oh，yeah！I did it!

imbiz8-Jun-10 4:48

imbiz

8-Jun-10 4:48

I found another way.
I simply changed the type of listview1 in Form1 to "Public Static", now I can update the data in Form2.
Of course this is against the principle of "OO(Object Oriented)".

I will read that article you give me, maybe use of delegate is the best choice,thank you.

IP address control

SelvaKr8-Jun-10 1:00

SelvaKr

8-Jun-10 1:00

Hi,

I am a newbie to .NET.
I need to design an IP address control.
I can design a control on my own with edit boxes.
But before that i want to confirm whether we have any default IP address control in VS2008. I could not find it in the Tool box.

Do we have any default IP address control in VS2008 or 2010?

Thanks.

Selva

Re: IP address control

Pete O'Hanlon8-Jun-10 1:03

Pete O'Hanlon

8-Jun-10 1:03

SelvaKr wrote:
Do we have any default IP address control in VS2008 or 2010?

No. There's not one supplied by default.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

Re: IP address control

SelvaKr8-Jun-10 1:18

SelvaKr

8-Jun-10 1:18

Thanks Pete...

Selva

Re: IP address control

Johnny J.8-Jun-10 1:12

Johnny J.

8-Jun-10 1:12

There is no default IP address control in .NET, but there are several custom controls here on CP. These are some of them, there might be more:

A C# IP Address Control[^]

IP-Address TextBox[^]

Textbox Which Holds an IP Address[^]

A C# Numeric Field Control[^]

Re: IP address control

SelvaKr8-Jun-10 1:19

SelvaKr

8-Jun-10 1:19

Thanks Johnny...

Selva

Crystal Report : Parameter Count Mismatch.

saber.softs7-Jun-10 21:13

saber.softs

7-Jun-10 21:13

Hello Everyone,

I have been using Crystal Report for at least 7 years, but I never got this below exception before, when I wanted to set report data-source :

Parameter Count Mismatch.

Note that, I converted my project from VS 2008 to 2010. I didn't have any problem like this in VS 2008 before everything was working fine. After conversion and change appropriate crystal report references, It doesn't work anymore.

Below is my code :

private void PrintInvoice(int accountId)
{
     List<vwSalesModel> invoiceMdl = GetInvoiceInformationByAccountId(accountId);

     if (invoiceMdl == null)
         return;

     using (frmReportViewer frmReport = new frmReportViewer())
     {
         rptInvoice invoiceReport = new rptInvoice();

         // Setting report datasource
         frmReport.crystalReportViewer.ReportSource = invoiceReport;
         invoiceReport.SetDataSource(invoiceMdl);
         // -------------------------

         frmReport.ShowDialog();
     }
}

Any Advice will be helpful.

Regards
SABER.

http://codeprojects.wordpress.com

Problem in BackUp

SajjadZare7-Jun-10 19:57

SajjadZare

7-Jun-10 19:57

Hi to all,
I write below code to create backup
but it doesn't work

ServerConnection connection = new ServerConnection(".");
            Server srv = new Server(connection);
            SaveFileDialog sfd = new SaveFileDialog();
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                Backup bkpDatabase = new Backup();
                bkpDatabase.Action = BackupActionType.Database;
                bkpDatabase.Database = txtDBName.Text;//txtDBName contain Name of database
                BackupDeviceItem bkpDevice = new BackupDeviceItem(sfd.FileName, DeviceType.File);
                bkpDatabase.Devices.Add(bkpDevice);
                bkpDatabase.SqlBackup(srv);
            }//if

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