How often? - C# Discussion Boards

Barry Lapthorn2-Aug-04 23:29

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

Re: Objects and list boxes

leppie3-Aug-04 1:37

leppie

3-Aug-04 1:37

Barry Lapthorn wrote:
There must be an easy way than this. Any ideas?

Looks easy enough for me!

^{top secret xacc-ide 0.0.1}

Re: Objects and list boxes

Barry Lapthorn3-Aug-04 3:51

Barry Lapthorn

3-Aug-04 3:51

I should have said 'less crap' Wink | ;)

The 'callback' is a string. Seems to me like it would be boiler plate code (returning an object handle from a selected list) and perhaps should have been in the CLR.

Regards,

Barry

Re: Objects and list boxes

Dave Kreskowiak3-Aug-04 5:49

Dave Kreskowiak

3-Aug-04 5:49

Barry Lapthorn wrote:
There must be an easy way than this. Any ideas?

To do what? You really haven't said what your problem is.

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

Re: Objects and list boxes

gantww3-Aug-04 6:07

gantww

3-Aug-04 6:07

You could also override the ToString() method of your object and make it return the username as a string. As far as the callback goes, why not just insert the object into the listbox. When you want to get it back out, all you need to do is cast it to the appropriate type. Or am I missing something?

Will

Re: Objects and list boxes

Barry Lapthorn3-Aug-04 11:12

Barry Lapthorn

3-Aug-04 11:12

Do you have an example of this? Smile | :)

Regards,

Barry

Re: Objects and list boxes

Barry Lapthorn3-Aug-04 11:11

Barry Lapthorn

3-Aug-04 11:11

My problem is that return the reference to the object from a drop down list must be a common thing, and there's no consistent (e.g. interface) way of doing it, and that the way you have to do it is via a function call back that is a string, and therefore weakly typed.

Regards,

Barry

How often?

matthias s.2-Aug-04 23:20

matthias s.

2-Aug-04 23:20

Have I asked myself what the best way to enumerate a tree-like structure is (e.g. a TreeView, Directories)? I'd like to ask your opinions about it.

Regards,

Matthias

If eell I ,nust draw to your atenttion to het fakt that I can splel perfrectly well - i;ts my typeying that sukcs.
(Lounge/David Wulff)

www.emvoid.de

Re: How often?

leppie3-Aug-04 1:33

leppie

3-Aug-04 1:33

Recursion, if you are not worried about speed, else you will have to go to drawing board and dish up your own fast lookup method (eg a hashtable after recusing thru the entries).

^{top secret xacc-ide 0.0.1}

Doubt in Phil Wright's TabControl

Archana19772-Aug-04 22:14

Archana1977

2-Aug-04 22:14

Hi I am developing the application in C#
I am using Magic's TabControl.
My requirement is I want my Tabs to appear Vertically one below each other.
Please can anybody help me.

TabControl from Windows have one property named "Alingment" If i set it to right.It creates TAb page on right side but next tab page gets added in horizontal direction and not vertically down.
Thanks in advance

Archana

Re: Doubt in Phil Wright's TabControl

leppie3-Aug-04 1:43

leppie

3-Aug-04 1:43

You should redirect you question to the article's forum.

^{top secret xacc-ide 0.0.1}

Re: Doubt in Phil Wright's TabControl

Archana19773-Aug-04 2:27

Archana1977

3-Aug-04 2:27

How to redirct question to Article's forum?
I am not getting.

Archana

Re: Doubt in Phil Wright's TabControl

Nick Parker3-Aug-04 3:29

Nick Parker

3-Aug-04 3:29

Following this link:

http://www.codeproject.com/script/comments/user_new.asp?main=/cs/miscctrl/magictabcontrol.asp&df=100&forumid=10561&noise=1&app=50[^]

- Nick Parker
My Blog | My Articles

dlThread exception handler

LorenzoDV2-Aug-04 22:02

LorenzoDV

2-Aug-04 22:02

Hello!

I'm using the well-known technique of handling unhandled thread level exceptions with a nice dialog, etc.
However, while it perfectly works on my PC, on a user's PC with just the framework installed, a generic Windows dialog pops up, showing just the "thread ID" and two choices: OK to Debug, Cancel to quit.

My question is: why doesn't it work?

Re: dlThread exception handler

leppie3-Aug-04 1:46

leppie

3-Aug-04 1:46

I have seen this (but very long ago) on win98. I suggest u make sure all the .NET prerequisites are installed and then reinstall .NET just to be double sure! Smile | :)

^{top secret xacc-ide 0.0.1}

Access is denied

Anonymous2-Aug-04 22:00

Anonymous

2-Aug-04 22:00

System.Net.WebClient test = new System.Net.WebClient();<br />
test.DownloadFile("www.microsoft.com","D://test//index.aspx");

When I run this statement using my web program page to download my page to htm it gives me an error The remote server returned an error: (403) Forbidden. Please help me on how can I get around this one.

/dabuskol

Culture extrange behavior

Jose Vicente2-Aug-04 21:53

Jose Vicente

2-Aug-04 21:53

Hello all.

I have a extrange behavior in my computer.
My regional configuration is Spanish ( Spain ) which means that the local decimal separator is ','.

If I run this code the results are

double d = 5.1;
string s = d.ToString (); //s= "5.1"

which is not the expected result ( it must be "5,1").

I have checked the value of
System.Threading.Thread.CurrentThread.CurrentCulture
and the culture is spanish-spain and the currency decimal separator is ','.

But the most extrang thing is that I have gone to the control panel, I have changed the local configuration to Catalonian, then without close the dialog I have changed another time to Spanish-Spain and after that the previous code works and the double is translated to "5,1".

Anyone have some similar problems ? Is this a bug of the framework. Can anyone help me ? Confused | :confused:

Best regards

Jose Vicente

Re: Culture extrange behavior

Norman-Timo3-Aug-04 1:20

Norman-Timo

3-Aug-04 1:20

I think that problem can be solved in Windows.

There are possibilities to change culture-settings in "control panel" -> "regional settings" -> "numbers" (At least Win2000).

There are many settings which you can change. Perhaps is Windows meaning that i Spain the standard seperator is '.'?

Try this and hope that this works...

If not, I´m sorry to reply this question, and forgot everything I wrote Wink | ;-)

Ciao
Norman-Timo

Re: Culture extrange behavior

Jose Vicente3-Aug-04 3:14

Jose Vicente

3-Aug-04 3:14

Thanks.

How to save status of runtime controls?

sachinkalse2-Aug-04 21:24

sachinkalse

2-Aug-04 21:24

I have divided a form in two parts, first half contains a tree view control, in the next half there is a panel control, on
that I draw some controlls like check box, radio button, combo box, numeric up down, etc. at runtime, corresponding
to the node click of the tree view control.
In this case how and where should I store the status of each control?
e.g.
If there is a check box and a combo box corresponding to the node 1 and I click node 2, before drawing the controlls
corresponding to node 2 on the panel, where should I save the status of the controls corresponding to node 1 such
that when I again click node 1 , I should again get the old status of the controlls corresponding to it.
Please guide.

Re: How to save status of runtime controls?

Norman-Timo3-Aug-04 0:52

Norman-Timo

3-Aug-04 0:52

I´m not sure if I´m correct, but I think the best Method is to create for each node an own Object-Class. And in this class you are allowed to set values from your combobox, checkbox...

So you have to initialize your complete tree with all Object-Classes first, and then you´re able to switch between this classes.

Maybe I´m wrong, because I´m not so an experienced programmer.

So maybe I help you to find your own slution with this hint.

Your
Norman-Timo

Identify max no of child nodes for a node in XML

saud_a_k2-Aug-04 20:49

saud_a_k

2-Aug-04 20:49

I have to find out the maximum number of nodes for a child node
ex. my Xml is
<customers>
<customer id="c1">
<name>aaaa</name>
<job>Plumber</job>
<city>Hdddd</city>
<state>aaaaa</state>
</customer>
<customer id="c2">
<name>hhhhhhhh</name>
<job>hdfgdfgdf</job>
<city>dfgdfg</city>
<state>dfgdf</state>
</customer>
<customer id="c3">
<name>Memphis rays</name>
<job>
Car guy
<designation>dfsdfsd</designation>
</job>
<city>dfgdfgdfg</city>
<state>fgdfgdf</state>
</customer>
</customers>

Now the third customer node has a child to it's child (customer/job/designation) I need to find out that node, that has maximum children.. by reading the Xml file through C#.
Help!

<b>_____________________________________________________</b>
<b>Yea! I could be wrong...</b>

Re: Identify max no of child nodes for a node in XML

Norman-Timo3-Aug-04 1:06

Norman-Timo

3-Aug-04 1:06

I think the best solution for this problem is to get the complete XML file with following instructions:

**************************************************
private static XmlDocument doc = new XmlDocument();
public XmlNode root;

using (StreamReader myTempFile = new StreamReader(xmlFile))
{
//read complete File into string
while ((rl = myTempFile.ReadLine()) != null)
{
tmpString += rl;
}
}

doc.LoadXml(tmpString);

root = doc.DocumentElement;

*************************************************

Now you have your complete XML-file in 'doc'. Additionally you have a root node.

Now you have to go through every node and check how many childs are available.

Something like:

*************************************************

int maxChildCount = 0;
int maxNodePos = 0;
int actNodePos = 0;

while (actNode != null)
{
actNodePos++;

int actChildCount = actNode.ChildNodes.Count;

if (maxChildCount < acthildCount)
{
maxchildCount = actChildCount;
maxNodePos = actNodePos;
}

actNode = actNode.NextSibling;
}
*************************************************

At the end you have the maxNodePos and the maxChildCount. At least you have to do is to start with your root-node and to step forward with 'actNode = actNode.NextSibling;' until your maxNodePos is reached.

I think it´s one solution and there are other possible, maybe faster to.

But I think it´s a solution.

Enjoy it, your
Norman-Timo

Re: Identify max no of child nodes for a node in XML

saud_a_k3-Aug-04 1:35

saud_a_k

3-Aug-04 1:35

Yes thanx for the idea but the code is not working. I want to know the node that has only the root element as it's parent. I used this recusive fun.

public void readXml(XmlTextReader textReader)
    {
        string temp;
        while(textReader.Read())
        {
                temp = textReader.Name;
                n++;
                Console.WriteLine(temp);
                readXml(textReader);
        }
    }

but I want write down (Console.Write(...)) only for that node which has the max no. of child nodes.
Any more Ideas?
Please

_____________________________________________________
Yea! I could be wrong...

Re: Identify max no of child nodes for a node in XML

Norman-Timo3-Aug-04 1:54

Norman-Timo

3-Aug-04 1:54

Ok if I understand it correctly:

You want to have first level Nodes and especially that one with the most child nodes?
In your case the nodes with "customer id..."?

But than you can take the first part from my example (the part until you have the 'doc' XML file and your root node.

Than you can do it in an analogue way:

***************************************************
int maxChildCount = 0;
XmlNode mostChildNode = null;

actNode = root.FirstChild; // then you have the first customer node!

while (actNode != null)
{
if (maxChildCount < actNode.ChildNodes.Count)
{
maxChildCount = actNode.ChildNodes.Count;
mostChildNode = actNode;
}

actNode = actNode.NextSibling;
}

*************************************************

The reason that my program is not working is maybe the fact, that I typed in the source directly in this reply-form (sorry).

But you are certainly able to correct compiler errrors, I think. (if there are some)

I think with these line of code you have your solution, if I understand you right.

I´m sorry if I´m not correct again.

Norman-Timo

Edited:
By the way with what html tags can I highlite the code sources?

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