Leap Year Problem... - C# Discussion Boards

Resource file without standard notation [modified]

5-Apr-09 19:44

I'm sorry, but this is a nonsense. You need to post code to show us what you're doing wrong.

Christian Graus

Driven to the arms of OSX by Vista.

"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

Re: For loop

King Julien5-Apr-09 20:25

King Julien

5-Apr-09 20:25

you will never find a fruitful answer unless you clearly explain your question.

Am assuming that,

you hve a 3 ListView controls LV1, LV2 LV3...

LV1 fields are filled while loading your form.. and you gotta select items from LV1 to fill out LV2....

And now you need to get IDs of LV2...

Is it that you want....?????

Have a Happy Coding.....

mayapeter5-Apr-09 19:36

mayapeter

5-Apr-09 19:36

.I have 2 Labels in my asp.net page.The text Property of labels will be null.there will be a dropdown menu (Eg.Arabic,English).i want to pass dropdown menu value to class file and inside class file i should define labels.Label text property should be fetched from resource file(eg.ResourceEng,ResourceArab.resx)and pass text value to Labels in asp.net page.

modified on Monday, April 6, 2009 1:54 AM

Re: Resource file without standard notation

King Julien5-Apr-09 20:51

King Julien

5-Apr-09 20:51

There is a separate forum dedicated to ASP.Net is available....

You may give a try there...

Have a Happy Coding.....

Leap Year Problem...

sah4965-Apr-09 19:25

sah496

5-Apr-09 19:25

Hello everybody,

I am having a problem to solve the following c# exercise:

You will take into account that February can be 29 days if it is during a leap year. Do NOT change the implementation of date_convert. Instead, add additional code in your main so that before you display the output of the method, if the month entered by the user is February, prompt the user for the year, and then use IsLeap to check the year and adjust the output of date_convert accordingly. Write appropriate method calls and statements within your main so that the console session may look as follows:

A valid console session may look as follows:

Please enter a month: March
The number of days in March is 31

Another session may look as follows:

Please enter a month: february
Please enter a year: 2007
The number of days in February is 28

Another session may look as follows:

Please enter a month: february
Please enter a year: 2000
The number of days in February is 29

If anybody can help me to solve the problem then i will be very greatfull.

Syed

Re: Leap Year Problem...

Christian Graus5-Apr-09 19:41

Re: Leap Year Problem... [modified]

5-Apr-09 19:41

This is your homework. What have you done to solve it ? Are you allowed to use the DateTime class ?

akhilonly0075-Apr-09 22:56

akhilonly007

5-Apr-09 22:56

hey sah496

this will give u days in month according to month no u have passed to
<pre>
public int DaysInMonth(int nMonth)
{
int nDays = 0;

switch (nMonth) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
nDays = 31;
break;
case 4:
case 6:
case 9:
case 11:
nDays = 30;
break;
case 2:
int nDay=1;
int nYear=GetYear();
DateTime oDate;

oDate=Convert.ToDateTime(nDay.ToString()+ "-" +
nMonth.ToString() + "-" +
nYear.ToString() ,"dd-mm-yyyy");
if (DateTime.IsLeapYear(nYear)) {
nDays = 29;
}
else {
nDays = 28;
}
break;
}
return nDays;
}

public int GetYear()
{
// read year and return
}

akhilonly007@gmail.com

modified on Monday, April 6, 2009 5:07 AM

Sort an array list

yesu prakash5-Apr-09 19:24

yesu prakash

5-Apr-09 19:24

Hi,

How to sort an arraylist in decending order?

Thankyou
YPKI

Re: Sort an array list

Christian Graus5-Apr-09 19:42

How to convert Graphics image to Bitmap?

5-Apr-09 19:42

Why would you use an ArrayList ? That's only there for legacy code. Does it not have a Sort method ( I can't remember ).

Re: Sort an array list

Tom Deketelaere5-Apr-09 22:47

Tom Deketelaere

5-Apr-09 22:47

Christian Graus wrote:
Does it not have a Sort method

Yes it does (how well it works I don't know, never use arraylists)

Re: Sort an array list

ramz_g8-Apr-09 19:42

ramz_g

8-Apr-09 19:42

Hi,
First u can sort the arraylist using the Sort() method... Then reverse the arraylist using the Reverse() method... Not sure whether this is the best solution, but it is one way of doing it...

Thanks,
ramz_g

FrankeyJames5-Apr-09 14:42

5-Apr-09 14:42

I cna't seem to figure this out and I though I once did this.

I have something like this:

newImage = new Bitmap(path.ToString());
Matrix matrix = new Matrix();
matrix.Rotate(angle);
Graphics g = Graphics.FromImage(newImage);
g.Transform = matrix;
g.Save();

Bitmap newImage2 = new Bitmap(newImage.Width, newImage.Height, g);
Save();
//dispose calls....

An image is created, but it's just completely black. I am wanting to rotate an image at a specified angle, and not use the RotateFlip, which has static values.

Any ideas? Can this Graphics be converted back to a Bitmap?

Christian Graus5-Apr-09 14:44

5-Apr-09 14:44

No, a graphics cannot be 'converted' to a bitmap. newImage is already the image your graphics is drawn on. You don't save the graphics, you save the bitmap.

FrankeyJames5-Apr-09 15:00

5-Apr-09 15:00

That what I was doing originally, but I kept getting expetion "A generic error occurred in GDI+". I'm overwriting the the original image....so maybe I'm doing something wrong and not dispoing of the picture. At any rate, if I save to a different ABS path, then it save the image, but the transform did not appear to have taken effect. I even tried drawing a line, but nothing changes with the picture - it's the same as the orignal.

So, i'm doing something like:

newImage.Save(path);

Should I be doing something different? Is there something I'm not calling on the Graphic object to make it apply to the Bitmap?

Christian Graus5-Apr-09 19:43

5-Apr-09 19:43

Yes, that means .NET already has a lock on the file, you'd need to save to another filename

Xmen Real 5-Apr-09 15:13

Xmen Real

5-Apr-09 15:13

try this

Bitmap newImage2 = new Bitmap(newImage);
Save();

newImage.Save();

Assume Graphics as pencil and Bitmap as paper...Now how you gonna do conversion...

TVMU^P[[IGIOQHG^JSH`A#@`RFJ\c^JPL>;"[,*/|+&WLEZGc`AFXc!L
%^]*IRXD#@GKCQ`R\^SF_WcHbORY87֦ʻ6ϣN8ȤBcRAV\Z^&SU~%CSWQ@#2
W_AD`EPABIKRDFVS)EVLQK)JKQUFK[M`UKs*$GwU#QDXBER@CBN%
R0~53%eYrd8mt^7Z6]iTF+(EWfJ9zaK-iTV.C\y<pjxsg-b$f4ia>

-----------------------------------------------
128 bit encrypted signature, crack if you can

Guffa5-Apr-09 15:23

Guffa

5-Apr-09 15:23

You can't convert a Graphics object to a Bitmap, as it doesn't contain the image. The Graphics object is just used to draw on a canvas, in this case the canvas is a Bitmap object.

You are creating a Graphics object to draw on the original image, but what you want to do is to create it to draw on the new image, then you draw the original image onto the new image.

The transform controls how the drawing is done using the Graphics object, so when you draw the original image using that Graphics object it will be rotated.

Despite everything, the person most likely to be fooling you next is yourself.

FrankeyJames5-Apr-09 17:18

5-Apr-09 17:18

Oh god, stupid me.....

Thanks for the responses everyone. I was going in circles (and sometimes th wrong way) because I thought the graphics was not writing to the original image. In fact it was. The test line i drew wasn't appearing because the coords I gave it were not long enough and my image is so huge that when I went to look at it I never see the line and the picture never rotated. Until I finally seen a red speck.... ;-0

Luc Pattyn5-Apr-09 16:24

Luc Pattyn

5-Apr-09 16:24

Hi,

there are some quirks you have to be aware of:
1. all errors in GDI+ will report "an internal error..."
2. Image.FromFile() locks the file until the image is disposed
BTW: Image.FromStream() does not

Bitmap bm1 = Bitmap.FromFile(filename);    // this locks the file
Bitmap bm2 = new Bitmap(width2, height2);  // the output image
Graphics g = Graphics.FromImage(bm2);      // so we can draw on bm2
g.Transform = matrix...;                   // some transformation
g.DrawImage(bm1);
bm1.Dispose();                             // unlocks the file
bm2.Save(filename, imageFormat);           // save output image to same or other file
g.Dispose();

Luc Pattyn [Forum Guidelines] [My Articles]

- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets

FrankeyJames5-Apr-09 17:21

5-Apr-09 17:21

Oh I swear, thank you SOOOO much. I couldn't figure out which object I wasn't dispoing of properly. I knew there was something wrong because if I could create a new bitmap as a new file name it would work, as it wasn't trying to write to the same STILL open file!!

Now on to figuring out to get it to rotate properly given the angle...ehhh.

Thanks for the help everyone!!