C# Discussion Boards - CodeProject

Mehbub3-Aug-04 3:15

3-Aug-04 3:15

Hello ..,
I was just wondering if any1 knows how to insert a flash MX movie in C#.net? I've created a ref of Shockwave flash but i couldn't make it work. It gets null.

Code example would be greatly appreciated.

Ta

Bob

Re: Insertng Flash MX in C#.net

Nick Parker3-Aug-04 3:54

Nick Parker

3-Aug-04 3:54

Mehbub wrote:
Code example would be greatly appreciated.

There are several articles on the Internet regarding this. I just did a quick search and came up with Using Flash With C#[^]. Lutz Roeder was also working on a Flash player in C#, it's here[^]

- Nick Parker
My Blog | My Articles

Combobox problem

Fule3-Aug-04 3:01

Fule

3-Aug-04 3:01

Hi All,

I create Windows form with 2 combobox, first combobox(cmbOwners) is set up from properties, and second one (cmbVessel) from code. Idea is when i select Owner from first combobox in second will show vessels releated with that owner. I have code on cmbOwner SelectedIndexChanged event :
private void cmbOwner_SelectedIndexChanged(object sender, System.EventArgs e)
{
cmbVessel.Items.Clear ();

dsVessel.R8.Clear ();
daVessel.SelectCommand.CommandText =
"SELECT * FROM R8 " +
"WHERE R1 = '" +
cmbOwner.SelectedValue + "'";
daVessel.Fill (dsVessel);

cmbVessel.DataSource = dsVessel;
cmbVessel.DisplayMember = "R8.Nm";
cmbVessel.ValueMember = "R8.RNo";
}
and code is working find only first time when i select owner,but on the second try i get error :

"An unhandled exception of type 'System.ArgumentException' occurred in system.windows.forms.dll

Additional information: Cannot modify the Items collection when the DataSource property is set."

Can anyone help me with this.

Thanks

Re: Combobox problem

DougW483-Aug-04 4:55

DougW48

3-Aug-04 4:55

Fule wrote:
private void cmbOwner_SelectedIndexChanged(object sender, System.EventArgs e)
{
cmbVessel.Items.Clear ();

dsVessel.R8.Clear ();
daVessel.SelectCommand.CommandText =
"SELECT * FROM R8 " +
"WHERE R1 = '" +
cmbOwner.SelectedValue + "'";
daVessel.Fill (dsVessel);

cmbVessel.DataSource = dsVessel;
cmbVessel.DisplayMember = "R8.Nm";
cmbVessel.ValueMember = "R8.RNo";
}

I think your problem is the cmbVessel.Items.Clear(); line. You don't really need to do that, since you are changing your DataSource anyways. Comment out that line and you should work better.

- D

Re: Combobox problem

Fule3-Aug-04 20:17

Fule

3-Aug-04 20:17

Thanks , is working Big Grin | :-D

Columns width in ListView objects

ma.poggi-cons3-Aug-04 2:30

ma.poggi-cons

3-Aug-04 2:30

Is there an easy way to set the width of Columns in a ListView so that they cannot be interactively resized at runtime ? I could not find any property of the ListView class to obtain that.

Thanks

Maurizio

Re: Columns width in ListView objects

Werdna3-Aug-04 12:53

Werdna

3-Aug-04 12:53

in .net 2.0 you can handle ColumnWidthChanging event and cancel resize. I'm not sure if there is anything in 1.0

Length of audiofile

Member 8094093-Aug-04 1:51

Member 809409

3-Aug-04 1:51

Hello!

I'm creating an mp3-player using DirectShow and I've got a problem. I want to show the length of the audiofile I'm playing but I can't figure out how.

When I'm e.g. playing an audio file with a length och 46sec the code below shows a length of 195sec (3m 15sec), why? Both Duration and StopTime shows the same length.

private IMediaPosition _mediaPosition;

_mediaPosition.Duration;
_mediaPosition.StopTime;

I've tried to find a pattern by playing different audio files but I have not found one.

I've looked at these pages but they seem to have the same problem.
DirectShow - Playa
DirectShow - MediaPlayer

Thanks!
Erik

Works with some files

Member 8094093-Aug-04 2:18

Member 809409

3-Aug-04 2:18

Hello!
It's me again. I just figured out that Duration and StopTime works at some files.

Is'nt Windows MediaPlayer using DirectShow? Because Windows MediaPlayer can't get the correct length of all the files I've tested.

/Erik

Re: Length of audiofile

leppie3-Aug-04 2:19

leppie

3-Aug-04 2:19

195/46 ~= 4 .. maybe something to do with that?

^{top secret xacc-ide 0.0.1}

.net server help to connect to mobile

Member 7396273-Aug-04 1:35

Member 739627

3-Aug-04 1:35

I need help to make server which can accept connections from mobile using wap .. actully I am nebibe in .net and previosly was working with java and c++ languages ..
I need urgent help for resourses to look for and what to study ..
I am a enggeniring student ..
Regards
shubham shrestha agrwal

do best wherever u r

drawing with graphics

blankg3-Aug-04 1:04

blankg

3-Aug-04 1:04

i need to draw a line that goes over sevral controls that are docked on a tab page , but when i used the graphics object of the tab page i didnt see the line, how can i draw this kind of line? (do i have to use all the graphic objects of all the controls in its way?)

Re: drawing with graphics

Dave Kreskowiak3-Aug-04 6:05

Dave Kreskowiak

3-Aug-04 6:05

The requirement is to paint the lines ON TOP of the controls, not behind them. Some controls don't work very well with transparent backgrounds and some controls don't even support transparent backgrounds.

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

Re: drawing with graphics

Dave Kreskowiak3-Aug-04 6:03

Dave Kreskowiak

3-Aug-04 6:03

Try overriding the OnPaint event of your form. Call the forms base OnPaint event and then draw your lines as required. This should put your lines on top of the controls painted by the base OnPaint handler.

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

how to add MenuItem to Outlooks context menu

Stephan Wright3-Aug-04 0:54

Stephan Wright

3-Aug-04 0:54

Hy everyone!

What I want to do is when rightclicking on a ContactItem I do want my proggy to be listed in there with a MenuItem. This should either start my programm or if it is running bring it on top and/or send the data of the selected object to it.

Well the actions which have to take place when being selcted shouldn't be the problem but at the moment I have no idea how to get this MenuItem into the contextmenu when clicking on a contact.

I found samples which created new MenuBars, but that's not what I want. I do want to add an item to an existing menu.

Does anyone of you know how to do this? Well the best thing is this being possible no matter which version of Outlook I do use. Or if the solution depends on which version I do use then I would like to implement it on Outlook 2000 for testing at the moment.

Thanks!
Stephan.

Re: how to add MenuItem to Outlooks context menu

Luigi Casana3-Aug-04 20:57

Luigi Casana

3-Aug-04 20:57

From my point of view you won't be able to edit any context menu of Outlook, meaning you won't be able to add any item to them, right?
As far as I know you are only able to add an item to a MenuBar. This should be described in the MSDN or elsewhere!

Or is it possible to edit context menus of Outlook? Because if it is possible then I would be interested as well and I would be happy if anyone was willing to provide me some code to show me how to do this.
(This code doesn't have to be this specific like in Stephans request, any "standard code" for editing or adding an item to the context menu is what I would be looking for!)

LinkLabel (c#)

samithas3-Aug-04 0:47

samithas

3-Aug-04 0:47

I want to add a Link label to a form ,and when a user clicks on it the browser opens and navigate to that link
in the .net help the follwing code has been given
protected void LinkLabel1_LinkClicked(object sender, System.EventArgs e)
{
// Change the color of the link text by setting LinkVisited
// to True.
linkLabel1.LinkVisited = true;

// Call the Process.Start method to open the default browser
// with a URL:
System.Diagnostics.Process.Start("http://www.Microsoft.com");
}
but it didn't work bcos the app enters to the debug mode..any suggestions? Confused | :confused:

samitha

Re: LinkLabel (c#)

samithas3-Aug-04 1:19

samithas

3-Aug-04 1:19

thnx 4 the reply
Is this property comes with LinkLabel..?I have gone through the properties but did not come accross such a property...any suggestions?

samitha

Re: LinkLabel (c#)

Dave Kreskowiak3-Aug-04 6:07

Dave Kreskowiak

3-Aug-04 6:07

Ummmmm.....no, won't work...

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

Re: LinkLabel (c#)

Dave Kreskowiak3-Aug-04 6:07

Dave Kreskowiak

3-Aug-04 6:07

The NavigateUrl method only works with the WebBrowser object. This person is trying to launch the URL as a seperate process, just like double-clicking on a web shortcut on the desktop.

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

Re: LinkLabel (c#)

Dave Kreskowiak3-Aug-04 6:16

Dave Kreskowiak

3-Aug-04 6:16

Try creating a Process object and alter the ProcessStartInfo properties to UseShellExecute. Something like this:

Process webLink = new Process();
webLink.StartInfo.FileName = "http://www.microsoft.com";
webLink.StartInfo.UseShellExecute = true;
webLink.Start();

This will launch the URL as if you typed it in the Start/Run box of Windows.

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

Owner draw TreeView?

misterbear3-Aug-04 0:24

misterbear

3-Aug-04 0:24

I use an ordinary tree view inside a dialog, but I wish to write a text saying "No data available"
if the treeview (which is filled with items loaded from files) is empty.

Instead of just adding a node saying "No Data Available", which doesn't look very good,
I'd like to set a flag in the control (The control is a very thin wrapper for the API's treeview)
and when that flag is set draw the string centered in the treeview instead.

I found somewhere on google that this was only possible using Win32 messages with p/invoke.
My question is, how do I do this? I get the handle of the control and send some kind of paint message?
I haven't been into painting in WIN32 very much...

can anyone help me?

Re: Owner draw TreeView?

Nick Parker3-Aug-04 3:45

Nick Parker

3-Aug-04 3:45

The TreeView class is simply a wrapper around the Win32 TreeView control. You could simply subclass the TreeView and add your P/Invoke statements there. Depending on what you want to do, you could do something as simple as the Win32 function DrawText. The P/Invoke signature looks like this:

[DllImport("user32.dll")]
static extern int DrawText(IntPtr hDC, string lpString, int nCount,
  ref RECT lpRect, uint uFormat);

Also, you could just use the Graphics object and call the DrawString method. It all depends on what you are doing, this should get you started.

- Nick Parker
My Blog | My Articles

Re: Owner draw TreeView?

misterbear4-Aug-04 1:37

misterbear

4-Aug-04 1:37

Thanks for the advice, got it working. What I did was to override the wndproc and catch the WM_PAINT message, upon which a call to CreateGraphics() let me paint what I want.

What I tried originally was overriding the OnPaint method, but that didn't work, never got called I think..? (why?)

Objects and list boxes

Barry Lapthorn2-Aug-04 23:29

Barry Lapthorn

2-Aug-04 23:29

I am getting data from a database, and after some pushing and poking, I have a User object. I then create a list of these Users. I have a couple of accessors:

public string FullName()
{
   get
   {
     return m_name;
   }
}

public User GetUser()
{
   get
   {
      return this;
   }
}

and

lstUsers.DisplayMember = "FullName";
lstUsers.ValueMember = "GetUser";

and finally

private void lstUsers_SelectedIndexChanged(...)
{
  User u = (User)(lstUsers.SelectedValue);
  ...
}

There must be an easy way than this. Any ideas?

Regards,

Barry

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