C# Discussion Boards - CodeProject

GermanDM20-Dec-06 22:49

20-Dec-06 22:49

Hi there,
I am currently creating a web application in c# 2005, on my search form i would like to display an animated gif image while busy doing the search in the sql database.

As soon as the user clicks the search button i want the image to become visible and then as soon as the gridview got binded with the results, i want the image to be invisible again.
Now the problem is that the image does not become visible at all D'Oh! | :doh:

mmmm i dunno where to start finding the problem cause it does run the code but does not actually do it lol.
I am thinking i should probably use like "sleep" or threads but thats some weird stuff for me as i am still beginner. Is there any other solution to this problem?

Thanks in advance
Regards

Re: Show Animated Gif Image

Martin#20-Dec-06 22:57

Martin#

20-Dec-06 22:57

Hello,

I think the problem is that you are running the control with the gif in the same threat (which is busy) where you are doing the search.
You could do a control.Refresh();, after you set Visible=true.
But it would only show the not- or rarely moving gif I think.

All the best,

Martin

Click on application Icon on desktop to display the already running instance of the application in the background and shown in the system tray.

Praveen_S20-Dec-06 21:57

Praveen_S

20-Dec-06 21:57

Hi All,

I am using VS.NET 2005 and using C#.net.

I want to develop a functionality as follows.
when I run my application , it should create a Icon in system tray. When I close the application it's instance should be running in the background and Icon should be displayed in the system tray. Again when i click on my applications shortCut Icon on desktop , not the icon from system tray, it should bring forward the already running instance of my application in the background.

thnx in advance

Praveen

Re: Click on application Icon on desktop to display the already running instance of the application in the background and shown in the system tray.

Tarakeshwar Reddy20-Dec-06 22:19

Tarakeshwar Reddy

20-Dec-06 22:19

Have a look at this article[^]

Tarakeshwar Reddy
MCP, CCIE Q(R&S)

Re: Click on application Icon on desktop to display the already running instance of the application in the background and shown in the system tray.

stancrm20-Dec-06 22:25

stancrm

20-Dec-06 22:25

To show icon in system tray, use NotifyIcon.
To bring up your application if already started, read this:

http://codebetter.com/blogs/paul.laudeman/archive/2004/07/17/19576.aspx

For variable className in method FindWindow, use Spy++ to find your application name, it must be something like this: "WindowsForms10.Window.8.app.0.33c0d9d"

intersecting controls

kkadir20-Dec-06 21:51

kkadir

20-Dec-06 21:51

Hello everyone,

How can I find if two controls intersect or not ?

Best regards...

.:: Something is Wrong ::.

Re: intersecting controls

Nougat H.21-Dec-06 0:57

Nougat H.

21-Dec-06 0:57

if (control1.Bounds.IntersectsWith(control2.Bounds))
...

That should do it.

How to access the Generic.Dictionary by an index.

MarkPhB20-Dec-06 21:30

MarkPhB

20-Dec-06 21:30

Hi =),

I have class that works with a Generic.Dictionary and now i want to access the elements by an index.

Is there a way i can do this ? ...or are there other classes where i can access the elements by an
index and provides the same functionality like the Generic.Dictionary?

I already found the Generic.SortedList, but there my listing will be sorted and i dont need/want that =/

Re: How to access the Generic.Dictionary by an index.

Martin#20-Dec-06 21:54

Martin#

20-Dec-06 21:54

Hello,

If you don't need the access per key functionality at, you should use an ArrayList. (System.Collections)

All the best,

Martin

Re: How to access the Generic.Dictionary by an index. [modified]

MarkPhB20-Dec-06 22:09

MarkPhB

20-Dec-06 22:09

Hi Martin, thx for the quick answer, but the ArrayList is useless for me cause i need the generic-properties.

I have a Generic.Dictionary that looks like this...

Dictionary<Guid, TcpClient> tcpConnections = new Dictionary<Guid, TcpClient>();

... and in some cases i want to access an element of the listing without to know the Guid, like this...

tcpConnections.Values[2]

... but unfortunatly this dont work Cry | :((

Re: How to access the Generic.Dictionary by an index.

Martin#20-Dec-06 22:16

Martin#

20-Dec-06 22:16

Ok,

And if you make a second Dictonary with 1, 2, 3, ... as key and access it like this.
tcpConnection2[1]

Hope it's not complietly stupid, but I have only .NET1.1 and never worked with Dictonary class before.

All the best,

Martin

Re: How to access the Generic.Dictionary by an index.

J4amieC20-Dec-06 22:45

J4amieC

20-Dec-06 22:45

I'ts not completely stupid, all youve done is make a second index for the list. Ive accomplished many tasks in this way.

Another way is with a collection that supports both key or index lookup - there used to be one in .NET 1.1 in the System.Collections.Specialized namespace. Im sure there will be a generic version in .NET 2

---

How to get answers to your questions[^]

Re: How to access the Generic.Dictionary by an index.

Martin#20-Dec-06 22:52

Martin#

20-Dec-06 22:52

Hello,

Thanks for the info.

I think System.Collections.Specialized.NameValueCollection would be the .Net1.1 non generic version.

All the best,

Martin

Re: How to access the Generic.Dictionary by an index.

Tim Paaschen20-Dec-06 22:41

Tim Paaschen

20-Dec-06 22:41

The class System.Collections.ObjectModel.KeyedCollection provides the functionality you are looking for. However, you have to derive your own collection class from it, as you must override the GetKeyForItem member. Maybe it is suited for your application.

Regards,
Tim

Re: How to access the Generic.Dictionary by an index.

MarkPhB20-Dec-06 23:08

MarkPhB

20-Dec-06 23:08

yea your right Smile | :)

, thx Tim

How does the HKL struct look like?

Martin#20-Dec-06 21:25

Martin#

20-Dec-06 21:25

Hello,

Im trying to implement the GetKeyboardLayoutList method from user32.dll in my .Net1.1 WinApp.
Like this:
[DllImport("user32")]
private static extern UInt32 GetKeyboardLayoutList(int nBuff,ref HKL[] lpList);

Here is the MSDN info:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/userinput/keyboardinput/keyboardinputreference/keyboardinputfunctions/activatekeyboardlayout.asp[^]

I also Googled for it, but couldn't find out what the HKL struct looks like.

Thanks for your help and suggestions.

All the best,

Martin

Re: How does the HKL struct look like?

Pete O'Hanlon20-Dec-06 22:52

Pete O'Hanlon

20-Dec-06 22:52

Martin

I believe that the reference should look like this:

[DllImport("user32.dll")]
public static extern int GetKeyboardLayoutList(int nBuff, ref int lpList);

Then, in your code, you would work with it like this:

int[] layouts = new int[1];
int length = GetKeyboardLayoutList(0, ref layouts[0]);
layouts = new int[length];
GetKeyboardLayoutList(layouts.Length, ref layouts[0]);

the last thing I want to see is some pasty-faced geek with skin so pale that it's almost translucent trying to bump parts with a partner - John Simmons / outlaw programmer

Deja View - the feeling that you've seen this post before.

Re: How does the HKL struct look like?

Martin#20-Dec-06 23:24

Martin#

20-Dec-06 23:24

Hello Pete,

It works!!!! Cool | :cool:

Thanks a lot.

Actually I made the mistake to define it as an array.
like this:

[DllImport("user32.dll")]
public static extern int GetKeyboardLayoutList(int nBuff, ref int[] lpList);

int[] layouts = new int[1];
int length = GetKeyboardLayoutList(0, ref layouts);
layouts = new int[length];
GetKeyboardLayoutList(layouts.Length, ref layouts);

This was strange because the first call of GetKeyboardLayoutList returned the write value (Lenght of 3).
But the second call, brought back a lenght of 1 with a value 0. Confused | :confused:

But with your help everything is fine now. (And it was not the first time of corse!)

So thank you very much again.

All the best,

Martin

handle events for objects created on the fly?

JoeRip20-Dec-06 21:03

JoeRip

20-Dec-06 21:03

When you create .NET UI objects on the fly, how do you handle the events that come to them?

Lets say that in code, I create any number of new buttons and put them on my form. How do I code a handler for the click event on those buttons? I won't know their names until they exist (Button1, Button2, Button3, etc), and I can't just have a huge list of

private void Button1(), private void button()

handlers sitting around in my code.

So, how do I code a handler for Button[x]? I'm sure there is something basic I'm missing here.

Thanks,

Joe

PS. I posted a much more specific version of this question in the .NET framework forum, before I realized that I had a much more general lack of understanding here.

Re: handle events for objects created on the fly?

Tarakeshwar Reddy20-Dec-06 21:24

Tarakeshwar Reddy

20-Dec-06 21:24

In continuation with my answer in the .Net Framework forum

You could create a single event
Private void Button_Click(object sender, System.EventArgs e)

For each of the buttons you can assign the event handler as

Button1.Click += new System.EventHandler(Button_Click);<br />
Button2.Click += new System.EventHandler(Button_Click);<br />
Button3.Click += new System.EventHandler(Button_Click);<br />
.<br />
.<br />
ButtonN.Click += new System.EventHandler(Button_Click);

Based on the sender you can define what needs to be executed inside the Button_Click Event

Tarakeshwar Reddy
MCP, CCIE Q(R&S)

Re: handle events for objects created on the fly?

AmitSumit20-Dec-06 21:29

AmitSumit

20-Dec-06 21:29

Please see the following link:-

http://www.codeproject.com/useritems/DynamicServerControls.asp

It will help you.

Amit

Re: handle events for objects created on the fly?

JoeRip20-Dec-06 21:56

JoeRip

20-Dec-06 21:56

Thanks everybody, for the fast and educated responses. I think I'm on my way.

Why is it that .NET, since it implemented a

toolstripmenuitem_DropDownItemClicked event, didn't also provide a

toolstripmenuitem_DropDownItemCheckedStateChanged ? This would have made this process much easier. I realize that not every DropDownItem will support CheckedStateChanged, but even giving me a general

toolstripmenuitem_DropDownItemTheresBeenAnEvent event, and telling me which event in the args, would have been better than nothing...

Thanks again! I'll be back... now that I know where you guys are. Smile | :)

Transparent control with Magnifier functionality [modified]

free_soul42420-Dec-06 20:58

free_soul424

20-Dec-06 20:58

Hi i am look for a Transparent control with Magnifier functionality just like a windows Magnifier component .i mean how i can make magnifying glass in c#.Net
thanks

-- modified at 4:45 Thursday 21st December, 2006

How to create the set up for "Word Template" project

AmitSumit20-Dec-06 20:53

AmitSumit

20-Dec-06 20:53

Hi All,

Its urgent

I am creating a word template Addinn. I am using "Word Template" project for that. My problem is how can create the set up for "Word Template" project. If any body knows then please help me.

Thanks in advance.

Amit

How to change fonts of any custom string ??

Waqas Nasir20-Dec-06 20:24

Waqas Nasir

20-Dec-06 20:24

Hi,

can any body please help me regarding changing the fonts of any custom string placed any where in the custom control.

Thanks in advance,

regards.

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