C# Discussion Boards - CodeProject

Re: Selecting item in listbox after creating it

JoeSharp28-Mar-07 3:58

JoeSharp

28-Mar-07 3:58

int index = lbLayouts.Items.Add("Layout " + lbLayouts.Items.Count+1);
lbLayouts.SelectedIndex = index;

Re: Selecting item in listbox after creating it

sinosoidal28-Mar-07 4:02

sinosoidal

28-Mar-07 4:02

Thank you very much!

Nuno

Map multiple events to a single handler

swjam28-Mar-07 3:50

swjam

28-Mar-07 3:50

Problem Statement
How do I map multiple events to a single event handler?

Details
I have an MDI application and I would like to map a tree view item click to the same event handler for one of the items below the file menu, say filemenuitem. The tree view is a control within the MDI application.
Additionally, I would like one of the toolbars item clicks to map to the same.

Code Snippet/Others
Thanks in advance.

I am a SysAdmin, I battle my own daemons.

Re: Map multiple events to a single handler

Pete O'Hanlon28-Mar-07 3:58

Pete O'Hanlon

28-Mar-07 3:58

You do this by entering the name of the method that you call in the event handler link, e.g.:

myControl.Clicked += new EventHandler(MethodName);

You do this for both items.

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

Write file to HD and read directly = crach

Ollie198628-Mar-07 3:39

Ollie1986

28-Mar-07 3:39

Hey,

When I write a file to my Harddisk and try to read (append) the next line (in my code) it craches. He says that the file doesn't exists... But when I wait 3-9sec it exists... How Can I for c# to immediatly write it on my Harddisk and not cache it our something?

thx!

Re: Write file to HD and read directly = crach

joon _vh.28-Mar-07 3:41

joon _vh.

28-Mar-07 3:41

It's very probably that you forgot to close your file before you tried to open it again. Can you show us the code?

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: Write file to HD and read directly = crach

Ollie198628-Mar-07 4:36

Ollie1986

28-Mar-07 4:36

Code was inside "Using".

Works fine now Smile | :)

thx!

Changing Shape of the Controls C# Windows

satsumatable28-Mar-07 2:45

satsumatable

28-Mar-07 2:45

Hi
I want to create forms with glassy look and feel for that i want to change the shape of all controls like buttons, text box , and list controls , Menu. How can do it? As i have comeplted coding with all logics i want to write some global stuff for my project and apply it where ever i need by inheriting.

Its a windows based C# application....

Thanks.

Re: Changing Shape of the Controls C# Windows

joon _vh.28-Mar-07 3:42

joon _vh.

28-Mar-07 3:42

Type in 'glass' in the search box above you. Many articles about this topic.
Look into Framework 3.0 and WPF

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

custom events

upadesh28-Mar-07 2:43

upadesh

28-Mar-07 2:43

can we create custom events without delegates? if not why? please anybody pls

vani

Re: custom events

Judah Gabriel Himango28-Mar-07 4:09

Judah Gabriel Himango

28-Mar-07 4:09

Events use delegates. You don't always have to create one; you can use an existing one if the signature fits your event. Say you've got an event called Foo in your class:

class Bar
{
   public event EventHandler Foo;
}

There you've just declared an event without having to declare a separate delegate.
If you have some custom event args:

class MySpecialEventArgs : EventArgs
{
    ...
}

...and you want to use those event args in your event, you can use the generic System.EventHandler<T> delegate:

class Bar
{
   public event EventHandler<MySpecialEventArgs> Foo;
}

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: The "Church" at Mt. Sinai
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

How to use print preview for printing a selected part of the web page using C#.NET

tirumal123128-Mar-07 2:09

tirumal1231

28-Mar-07 2:09

Hi,

how to print a section of the page using c#.net

thanxs

tirumal

Re: How to use print preview for printing a selected part of the web page using C#.NET

netJP12L28-Mar-07 5:29

netJP12L

28-Mar-07 5:29

There are so many article on how to print you may take a look on them first atleast you will get an overall idea that may also narrow down your likelyhood requirements. Well i try to give you an idea.

PrintDocument is the most important object with that you may write whatever you want to print/printpreview.
e.g
public void printdocuemtn1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
e.Graphics.DrawString("Hello World");
}
once you have what you want to print you can pass the printDocument object to the printpreviewDialog object i.e
PrintPreviewDialog ppdObj = new PrintPreviewDialog();
ppdObj.Document=docuement1;
ppdObj.showDialog();//to preview

if you want to print without displaying a preview then apply the print() method on the printDocument object.

about delegate and event

upadesh28-Mar-07 2:05

upadesh

28-Mar-07 2:05

can anybody suggest me by giving exact difference between delegate and event

vani

Re: about delegate and event

Stefan Troschuetz28-Mar-07 2:18

Stefan Troschuetz

28-Mar-07 2:18

Events and Delegates[^]

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Re: about delegate and event

rah_sin28-Mar-07 2:23

rah_sin

28-Mar-07 2:23

Delegate is the abstract way to call any method or u can say it acts like a pointer to the method.Where as event is a interrupt which is caused by the user's action and call the event handler attached with that event to do desired processing.U can make custom events by using delegates.

rahul

Re: about delegate and event

Elina Blank28-Mar-07 4:36

Elina Blank

28-Mar-07 4:36

Check here

This is also helpful http://blog.monstuff.com/archives/000040.html[^]

Sincerely,
Elina

Life is great!!!
Enjoy every moment of it! Blush | :O

Inherited permissions for a file or directory

Alper Alaca28-Mar-07 2:04

Alper Alaca

28-Mar-07 2:04

Hi,
I can read file/directory permissions using
ManagementPath class
and
path.RelativePath = "Win32_LogicalFileSecuritySetting.Path='c:\\oracle';
etc.

Besides, I need to read if that particular permission setting is inherited or not,
as it is seen from the image attached-the column "Inherited from"-
Is there a way?
Thank you...
Click here for sample image for permissions

Re: Inherited permissions for a file or directory

Alper Alaca28-Mar-07 4:11

Alper Alaca

28-Mar-07 4:11

I think I've found it.
It's like:

string dirPath = @"c:\\oracle\temp";
DirectorySecurity ds = Directory.GetAccessControl(dirPath);
AuthorizationRuleCollection arc = ds.GetAccessRules(true, true, typeof(System.Security.Principal.NTAccount));
foreach (FileSystemAccessRule fsar in arc)
{
string identity = fsar.IdentityReference.Value;
string access = fsar.AccessControlType.ToString();
string rights = fsar.FileSystemRights.ToString();
bool inherited = fsar.IsInherited;
}

string filePath = @"c:\\oracle\sqlnet2.ora";
FileSecurity fs = File.GetAccessControl(filePath);
arc = fs.GetAccessRules(true, true, typeof(System.Security.Principal.NTAccount));
foreach (FileSystemAccessRule fsar in arc)
{
string identity = fsar.IdentityReference.Value;
string access = fsar.AccessControlType.ToString();
string rights = fsar.FileSystemRights.ToString();
bool inherited = fsar.IsInherited;
}

Send ArrayList to ( webMethod) - Web Service

mm31028-Mar-07 1:59

mm310

28-Mar-07 1:59

How i can Send ArrayList to WebMethod ? i used this code in WebService class

[WebMethod]<br />
public void getData(ArrayList DataS)<br />
{<br />
}

and send data from clinet to Web Service like this

localhost.Service BB = new localhost.Service();<br />
<br />
ArrayList dS = new ArrayList();<br />
<br />
BB.getData(ds);

this code is not work , any one can Exp this problem ?

Issue with NameValueCollection

SakthiSurya28-Mar-07 1:15

SakthiSurya

28-Mar-07 1:15

Hi,

As i want to store more than a value for a single key, i am using

NameValueCollection for storing the values.

Periodically (say for every 10 seconds), i will remove the values for

further processing with

nvCollection[Key]=null;

In this case, the null is also counted as a value. How can i

eliminate this null value.

With thanks,
Sakthi.

Re: Issue with NameValueCollection

Vikram A Punathambekar28-Mar-07 2:19

Vikram A Punathambekar

28-Mar-07 2:19

To remove values for a key, use the NameValueCollection.Remove() method.

Cheers,
Vikram.

The cold will freeze our stares
We won't care...

Re: Issue with NameValueCollection

SakthiSurya28-Mar-07 2:28

SakthiSurya

28-Mar-07 2:28

Hi,

NameValueCollection.Remove() Will remove even the key .

i.e. entire key value pair will be removed.

But i want only the values to be removed retaining the key.

With Thanks,

Sakthi.

Re: Issue with NameValueCollection

joon _vh.28-Mar-07 3:44

joon _vh.

28-Mar-07 3:44

what do you mean by 'the null is counted as a value'?

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: Issue with NameValueCollection

rah_sin28-Mar-07 2:40

rah_sin

28-Mar-07 2:40

u can try
if( nvCollection.Contains(key))
{
String oldkey = key;
nvCollection.Remove(key);
nvCollection.Add(oldkey,newvalue);
}

rahul

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