C# Discussion Boards - CodeProject

ListView OwnerDraw and Custom Background

PicklesTheClown10-Feb-06 8:28

10-Feb-06 8:28

I am failing in finding a way to use the new ListView.OwnerDraw=true and render a custom background.

- ListView.BackgroundImage does not work for our needs.
- SetStyle(ControlStyles.UserPaint, true); causes OnPaint and OnPaintBackground to fire *after* OnDrawItem, erasing any custom Item rendering.

Am I missing a way to custom draw a ListView background while using the new-fangled OwnerDraw?

Unable to get a Profile custom (object) collection to bind to GridView,etc (IList objects)?

kloepper10-Feb-06 8:00

kloepper

10-Feb-06 8:00

Q. Unable to get a Profile custom (object) collection to bind to GridView,etc (IList objects)?

This is my first custom object so I may be doing something rather simple, wrong, or it may be something else to do with the Profile object. Either way, I need help Smile | :)

Here's a brief description of the code----------------------------------------------------------------------------------

1) I have a custom object: "School.Teachers" (see below)

2) which is used as a Profile object data type in the web.config file:

<profile defaultProvider="AspNetSqlProfileProvider" >

<properties>

<add name="Teachers"

type="School.Teachers"

allowAnonymous="true"/>

</properties>

</profile>

3) I'm setting the value of a Profile object (ASP.NET 2.0) equal to the custom object:

School.Teachers tlTeachers = new School.Teachers();

tlTeachers.Add(new School.Teacher("Buck"));

Profile.Teachers = tlTeachers;

4) Code like this works:

Label1.Text = Profile.Teachers.Count.ToString(); // The number of items in the profile object

Label1.Text = Profile.Teachers[1].FirstName.ToString(); // The value of an item at a particular index position

5) But this does not:

GridView1.DataSource = Profile["Teachers"]; // Populate the GridView1 from the Profile Object

GridView1.DataBind();

The custom object: "School.Teachers"---------------------------------------------

[Serializable()]

public class Teachers : CollectionBase

{

public Teachers()

{}

public Teacher this[int index]

{

set

{

List[index] = value;

}

get

{

return (Teacher)List[index];

}

}

public int Add(Teacher value)

{

return List.Add(value);

}

public int IndexOf(Teacher value)

{

return List.IndexOf(value);

}

public void Insert(int index, Teacher value)

{

List.Insert(index, value);

}

public void Remove(Teacher value)

{

List.Remove(value);

}

public bool Contains(Teacher value)

{

return List.Contains(value);

}

}

-- modified at 14:35 Friday 10th February, 2006

Dispalying decimal value in the textbox

zaboboa10-Feb-06 7:41

zaboboa

10-Feb-06 7:41

Hello,

I have textbox.text = row["TotalArea"].ToString();

In VS 2003, all the trailing zeros were removed, so if the value of the area was 60.0000, then I would see only the value of 60.

However, in VS 2005 the same statement gives 60.0000. Exact value from a server. How can I make sure for all values the zeros are removed.

Thank you.

Re: Dispalying decimal value in the textbox

Dave Kreskowiak10-Feb-06 7:45

Dave Kreskowiak

10-Feb-06 7:45

Specify the format string you want to use in the .ToString() method.

TextBox.Text = row["TotalArea"].ToString("###.##");

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Dispalying decimal value in the textbox

zaboboa10-Feb-06 7:51

zaboboa

10-Feb-06 7:51

But that way if the value has 3 decimal values, it will cut it short.
So I guess what I am asking, how come the same command produces different results in both version of Visual Studio?

Re: Dispalying decimal value in the textbox

Dave Kreskowiak10-Feb-06 9:10

Dave Kreskowiak

10-Feb-06 9:10

Actually, I'm not getting the results your describing. No matter what I input for a datatype, I'm always getting the trailing zero's removed when .ToString() returns.

You might want to try to force the value to a known type first before calling ToString() on it:

textbox.text = ((float)row["TotalArea"]).ToString();

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Dispalying decimal value in the textbox

User 665810-Feb-06 9:35

User 6658

10-Feb-06 9:35

Is there some documentation of all available formatting rules? In my opinion MSDN lacks this information, but maybe I'm just blind Smile | :)

regards

modified 12-Sep-18 21:01pm.

Re: Dispalying decimal value in the textbox

Dave Kreskowiak10-Feb-06 12:13

Dave Kreskowiak

10-Feb-06 12:13

Do you mean this[^]?

Be sure to look at the index on the left side of the page to see additional information. Formatting is a MUCH larger topic than it would appear to be.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Dispalying decimal value in the textbox

User 665811-Feb-06 2:51

User 6658

11-Feb-06 2:51

That's a great source, thanks Smile | :)

modified 12-Sep-18 21:01pm.

Topmost Form

PHDENG8110-Feb-06 7:35

PHDENG81

10-Feb-06 7:35

How can I make a form ALWAYS topmost regardless if another form within the project has been set to topmost? Thanks in advance.

P

Re: Topmost Form

NaNg1524110-Feb-06 8:56

NaNg15241

10-Feb-06 8:56

try adding to your database at your forum-msgs table another field called "Type", you should probably use numbers for this.
when you call for your messages at your page, try putting first the ones with type = 1, and later get the others.
this is a prioraty for your messages, then you can arrange them.

Re: Topmost Form

Dave Kreskowiak10-Feb-06 9:03

Dave Kreskowiak

10-Feb-06 9:03

Ummm....And this has what to do with making a form TopMost??? Confused | :confused:

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Topmost Form

NaNg1524110-Feb-06 9:19

NaNg15241

10-Feb-06 9:19

hmmm... escuse me for being new here and not knowing **** about anything...

but now i get what he sais... sorry Blush | :O

Re: Topmost Form

PHDENG8110-Feb-06 9:31

PHDENG81

10-Feb-06 9:31

So, is there a way to do this?

Thanks

Re: Topmost Form

NaNg1524110-Feb-06 9:56

NaNg15241

10-Feb-06 9:56

well... i think that the best solution is that when you show it, you use the command form.showdialog() insted of form.show, this way it won't enable it to go to the last one...

that's the best option that i could think of, i don't think that you can do topmost with some other and not enable it to switch forms... unless...
you can do an event "On leave", and then do a focus command on the form, that way if you leave, it will get focused on the form and wouldn't be able to switch... i think that that would work.

no moer options for me...

good-luck, NaNg

Re: Topmost Form

PHDENG8113-Feb-06 1:32

PHDENG81

13-Feb-06 1:32

Thanks for the help guys.

P

Re: Topmost Form

Dave Kreskowiak10-Feb-06 13:49

Dave Kreskowiak

10-Feb-06 13:49

Hey, no offense. We just found it really odd that the OP kind of asked a question about, say, washing a dog, and you gave him instructions on aging cheese. Confused | :confused:

We thought you posted a reply to a question, but clicked on the wrong Reply link. That's how far off topic you were!

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Topmost Form

Dave Kreskowiak10-Feb-06 13:52

Dave Kreskowiak

10-Feb-06 13:52

Well, off the top of my head, you have a problem. Your app can only have one TopMost form. The one that gets set to TopMost LAST stays there. Ther previous ones get knocked down the z-order. It looks like you're going to have to manage your TopMost property a bit more carefully, and sparingly.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Outlook 2003 and Signatures

piXy^10-Feb-06 5:42

piXy^

10-Feb-06 5:42

Hey guys.

I'm writing a program that is integrated with Outlook 2003. When I create mails from my program, i'm having trouble inserting the default signature the "right" way. The signatures are stored locally in different formats, but I cannot seem to access them by the Outlook SDK object model.
Anyone out there who have encountered, and solved this issue?

Regards, Thomas.

FTP client Program with C#

BestArtemis10-Feb-06 5:08

BestArtemis

10-Feb-06 5:08

Hi every body
I Need a Simpe Ftp client program with source code (C#) and it work truely
Any one can help me?

Re: FTP client Program with C#

leppie10-Feb-06 5:51

leppie

10-Feb-06 5:51

You didnt search on CP or Google, did you? Sigh | :sigh:

xacc.ide-0.1.2.11
Now with more features than ever before!

Re: FTP client Program with C#

BestArtemis10-Feb-06 7:10

BestArtemis

10-Feb-06 7:10

yes I did,but my finds didnt works unfortunately.

Re: FTP client Program with C#

Dave Kreskowiak10-Feb-06 7:34

Dave Kreskowiak

10-Feb-06 7:34

Google results for ftp client c# source[^]. You really need to learn how to use a search engine...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

the dismatching error with "unsafe"

gary.ruan10-Feb-06 5:01

gary.ruan

10-Feb-06 5:01

i need to use the native code(unmanaged code),and i have to use void*,so i use the "unsafe" symbol then i meet the trouble

c++code:

SC_InitAsk sca;
memset(&sca, 0, sizeof(sca));
sca.m_Head.m_nType = SC_INIT;
sca.m_dwSoftware = 0x12345678;
sca.m_hWnd = m_hWnd;

m_Dll.SCInit(&sca, sizeof(sca)

c# code:

unsafe
{
SC_InitAsk sca = new SC_InitAsk();
sca.m_Head.m_lIndex = PublicValue.SC_INIT;
sca.m_dwSoftware = 0x12345678;
sca.m_hWnd = this.Handle;

SCInit(&sca, sizeof(SC_InitAsk));
}

c++ interface:
BOOL WINAPI SCInit(void *pInit, int nSize);

c# reference definition:
public unsafe static extern bool SCInit(void* pInit, int nSize);

---------
my trouble:
when debug c#,i got dismatching error with the c++ interface,then i can't find out what's wrong,for the reason may be the struct definition or the "void *"

so how i can work it out ,or how i can debug this?

gary.ruan

Re: the dismatching error with "unsafe"

Andy Moore10-Feb-06 6:21

Andy Moore

10-Feb-06 6:21

You don't have to use unsafe code here. Why not do something like this.

C#

[DllImport("yourdll")]
public static extern bool SCInit( System.Intptr pInit, int nSize )

Now in your function do this:

SC_InitAsk sca = new SC_InitAsk();
sca.m_Head.m_lIndex = PublicValue.SC_INIT;
sca.m_dwSoftware = 0x12345678;
sca.m_hWnd = this.Handle;

System.IntPtr p;

p = Marshal.AllocHGlobal( Marshal.Sizeof( typeof( SC_InitAsk ) ) );

Marshal.StructureToPtr( sca, p, true );

/*Call your C++ function here*/
SC_Init( p, Marshal.Sizeof( typeof( SC_InitAsk ) );

Marshal.FreeHGlobal( p );

I hope this helps.

Andy

Human beings were not meant to sit in little cubicles staring at computer screens all day, filling out useless forms and listening to eight different bosses drone on about about mission statements. -- Peter Gibbons

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.