C# Discussion Boards - CodeProject

Changing background colour of tabcontrol

2hdass11-Mar-06 17:06

11-Mar-06 17:06

How do i change the background colour of a tabcontrol? I looked at msdn and i found .BackColor property but it doesnt seem like its working... D'Oh! | :doh:

Drawing String on tabpage

2hdass11-Mar-06 15:48

2hdass

11-Mar-06 15:48

In order to draw my own font on the tab page i have overridden TabControl.DrawItem using the following:

private void DrawOnTab(object sender, DrawItemEventArgs e)
{
Graphics g = e.Graphics;
RectangleF tabTextArea;
TabControl tc = (TabControl)sender;
SolidBrush brush = new SolidBrush(Color.Black);
Font fnt = new Font("Microsoft Sans Serif",14F,
System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
foreach (TabPage tp in tc.TabPages)
{
tabTextArea = (tc).GetTabRect(tc.TabPages.IndexOf(tp));
//find out how to draw the string center
g.DrawString(tp.Text.Replace('_', ' '), fnt, brush, tabTextArea);
}
}

Right now it draws the text aligned to the left, how do i draw the font center? do i have to calculate the length of the string manually? How do i do that? Confused | :confused:

Re: Drawing String on tabpage

Ravi Bhavnani11-Mar-06 16:12

Ravi Bhavnani

11-Mar-06 16:12

Use the version of Graphics.DrawString() that allows you to specify formatting options. See this[^] link.

/ravi

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A Not-So-Neat Balancing Act

IceWater4211-Mar-06 15:21

IceWater42

11-Mar-06 15:21

I am using the cards.dll in my application as suggested at this website:

http://www.publicjoe.f9.co.uk/csharp/card06.html

The card shows up just fine on the form but i get this weird message immediately after drawing:

-----------
A call to PInvoke function 'CardMgr!cards.cardsdll::cdtDraw' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
------------
I have no clue what information to include in this to even begin to addrss the problem.

Any ideas how to address this?

Thanks!

Re: A Not-So-Neat Balancing Act

Ravi Bhavnani11-Mar-06 16:05

Ravi Bhavnani

11-Mar-06 16:05

See this[^] link.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: A Not-So-Neat Balancing Act

IceWater4211-Mar-06 16:20

IceWater42

11-Mar-06 16:20

Thank you so VERY VERY VERY much, Ravi.

That resolved the problem ... the DLL returned an integer ... the interface expected a bool.

I will so inform the author of the website ... thanks again.

Tabpage : Scoll without scroll bar

2hdass11-Mar-06 15:04

2hdass

11-Mar-06 15:04

I want my tabpage to be scrolled by using my own button, so I have the following:

if (tabControl1.SelectedTab.VerticalScroll.Value - 200 > tabControl1.SelectedTab.VerticalScroll.Minimum)<br />
{<br />
    tabControl1.SelectedTab.AutoScrollPosition = new System.Drawing.Point(0, tabControl1.SelectedTab.VerticalScroll.Value - 200);<br />
}else<br />
{<br />
    tabControl1.SelectedTab.AutoScrollPosition = new System.Drawing.Point(0, tabControl1.SelectedTab.VerticalScroll.Minimum);<br />
}

this is the event handler method to clicking the button for scrolling down
When i click the down button, it only moves down once, the second time i click it it doesnt work any more... D'Oh! | :doh:

this happens when i have the AutoScroll disabled, but when i have autoscroll enabled, its fine

why!? Confused | :confused:

Can someone help me? is there anyway to enable the autoscoll, but hide the scroll bar?! maybe override the onPaint method for tabControl?

Icons

Sean8911-Mar-06 13:19

Sean89

11-Mar-06 13:19

I have a database in which users can upload files for storage and whatnot. In my windows forms app to download/upload I am displaying the files that the user has uploaded. In the ListView I would like to display the appropriate icon for each file.

ex: If they have Microsoft Word installed, it should display a Microsoft Word icon. If not just a plain file icon should be displayed.

How would I do this?

Any help is appreciated.

Re: Icons

Ravi Bhavnani11-Mar-06 13:42

Ravi Bhavnani

11-Mar-06 13:42

Perhaps you could call SHGetFileInfo to obtain the file's icon index in the system image list (as well as its display name, eg: "Microsoft Word document"). You can pass a fictitious filename (with a matching extension) to SHGetFileInfo.

See this[^] link for how to call ShGetFileInfo from your WinForms app.

/ravi

My new year's resolution: 2048 x 1536
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Re: Icons

Sean8911-Mar-06 15:03

Sean89

11-Mar-06 15:03

Looks like that is what I need. Thanks!

mobile agent

karthik.N.Rao11-Mar-06 8:05

karthik.N.Rao

11-Mar-06 8:05

Hello ,

Read a article on mobile agent on code project,its wonderfull.

Also i read an article on mobile agent on MSDN
link to the article :
http://msdn.microsoft.com/msdnmag/issues/06/02/MobileAgents/default.aspx

It also conist of sample code implementation of mobile agent,its in C#.NET

i tested the program on the LAN,but got errors like
1>No connection could be made because the target machine actively refused it
or
2>A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

also tried between 2 PC's but got the same error.

Also i am new to .NET

can anyone help

thanking anyone in advance

karthik

C# Static Inheritance Question

tgiphil11-Mar-06 7:29

tgiphil

11-Mar-06 7:29

Hi! I have a newbie question: How do I get this code to compile and output "derivedclass"? The classes may only have static methods.

class BaseClass
{
static string _name = "baseclass";

static string GetName()
{
return _name;
}
}

class DerivedClass : BaseClass
{
static string _name = "derivedclass";
}

Console.WriteLine(DerivedClass.GetName());

I'm stumped so any help would be appreciated.

- Phil

Re: C# Static Inheritance Question

Daniel Grunwald11-Mar-06 8:21

Daniel Grunwald

11-Mar-06 8:21

Use:
static new string GetName() {...}

Re: C# Static Inheritance Question

tgiphil12-Mar-06 5:05

tgiphil

12-Mar-06 5:05

Unfortunately, that doesn't work.

transferring global variable values from one form to another

freak200411-Mar-06 5:46

freak2004

11-Mar-06 5:46

I'm a beginner programmer and,
I've been having problems with passing the values of global variables from one form to an other.
can some one help me.

I searched the webpage but couldn't find an easy way to do it.

thanks in forward

programming should sometimes be more logical.

Re: transferring global variable values from one form to another

sa_keles11-Mar-06 7:35

sa_keles

11-Mar-06 7:35

first create second form on your first form after then you can call public variables of your form1 using Form1.yourPublicVar . i mean on buttonclick event write code like this
mySecondForm Form2 = new mySecondForm();
Form2.yourPublicVar = what you want;

openup your heart and let the sun shine in

Re: transferring global variable values from one form to another

freak200412-Mar-06 21:42

freak2004

12-Mar-06 21:42

I don't seem to be able to extract the public variable...
I did everything you said, can you make a sample project and sned it to me??
If so please reply....
thanks in forward

sorry I'm just a noobie

Re: transferring global variable values from one form to another

sa_keles12-Mar-06 22:11

sa_keles

12-Mar-06 22:11

i am busy now but if you wait i will make a sample project for you (about 10 hours later)

openup your heart and let the sun shine in Smile | :)

Re: transferring global variable values from one form to another

freak200413-Mar-06 3:28

freak2004

13-Mar-06 3:28

THNX, let me know if you have it Wink | ;)

Re: transferring global variable values from one form to another

sa_keles13-Mar-06 7:29

sa_keles

13-Mar-06 7:29

i sent you a win project about transferring variables between forms i hope it helps you
bys Smile | :)

openup your heart and let the sun shine in Smile | :)

DLL Problems

cjengler11-Mar-06 3:01

cjengler

11-Mar-06 3:01

I am trying to develop a C# library that will be used by other class libraries in our orginization. I am have great difficulties in getting our other class libraries to be able to call methods of this library. We can create an instance of the public classes in my library but are unable to call any of the public methods or properties (even static ones) of that instance. Can anyone make a suggestion as to what I am missing here?

Re: DLL Problems

CWIZO11-Mar-06 4:04

CWIZO

11-Mar-06 4:04

Give us more information.
What version of the framework are you using, how are you refrencing the DLL, are you getting any erros, if yes what errors, some code would be nice too...

Q:What does the derived class in C# tell to it's parent?
A:All your base are belong to us!

Re: DLL Problems

cjengler11-Mar-06 6:46

cjengler

11-Mar-06 6:46

Thanks for the help. We have solved the problem. It was an internal security issue.
Thanks again

Find Host name from IP

J512198211-Mar-06 1:43

J5121982

11-Mar-06 1:43

i need to find the host name who is using the 61.247.251.97 IP.

my program works well .

when there is an IP confit for 61.247.251.97

how can i find the host names who is having 61.247.251.97?

using System;
using System.Net;
class GetAddress
{
public static void Main(string[] argv)
{
if (argv.Length != 1)
{
Console.WriteLine("Usage: GetAddress address");
return;
}
IPAddress test = IPAddress.Parse(argv[0]);
IPHostEntry iphe = Dns.GetHostByAddress(test);
Console.WriteLine("Information for {0}",
test.ToString());
Console.WriteLine("Host name: {0}", iphe.HostName);
foreach(string alias in iphe.Aliases)
{
Console.WriteLine("Alias: {0}", alias);
}
foreach(IPAddress address in iphe.AddressList)
{
Console.WriteLine("Address: {0}", address.ToString());
}
}
}

JAYARAJ

Re: Find Host name from IP

Dave Kreskowiak11-Mar-06 4:39

Dave Kreskowiak

11-Mar-06 4:39

If you're trying to find BOTH machine using the same address, you can't do it using normal methods because the normal rules for IP networking are being violated. You actually have to start digging into the network routing equipment to find where the other machine is.

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

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