C# Discussion Boards - CodeProject

Christian Graus1-Oct-07 15:02

1-Oct-07 15:02

Is that what he means ?

MasterSharp, this is why we discouraged you from writing owner drawn controls yesterday. Not because we don't want to help, but because you need to grasp the basics first. If this is what you meant, I urge you again to buy a book on C# and work through it, so you cover these sort of elementary gaps in your knowledge and build a firm foundation you can build on.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: More if's?

Christian Graus1-Oct-07 14:49

Christian Graus

1-Oct-07 14:49

I don't follow. condition is different every time ?

if (x == 1 || y == 2 || z == 3)

will succeed if only one of those statements is true. && requires they are all true.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: More if's?

MasterSharp1-Oct-07 15:19

MasterSharp

1-Oct-07 15:19

How many '&&'s can you use, is what I mean. I guess that what it boils down to.

Re: More if's?

PIEBALDconsult1-Oct-07 15:23

PIEBALDconsult

1-Oct-07 15:23

Until your & key wears out, and even then you can copy-and-paste.

Re: More if's?

MasterSharp1-Oct-07 15:26

MasterSharp

1-Oct-07 15:26

Oh... I thought you could only use it once...

Re: More if's?

PIEBALDconsult1-Oct-07 15:28

PIEBALDconsult

1-Oct-07 15:28

Well, next time... TRY IT!! You ain't gonna hurt the computer.

Re: More if's?

MasterSharp1-Oct-07 15:31

MasterSharp

1-Oct-07 15:31

Well, it just seemed it would screw up tough, so thanks for the advice!

Re: More if's?

PIEBALDconsult1-Oct-07 15:46

PIEBALDconsult

1-Oct-07 15:46

You can't screw up... unless you're testing a hard-disk-wiper-outer or something.

Re: More if's?

El Corazon2-Oct-07 4:45

El Corazon

2-Oct-07 4:45

PIEBALDconsult wrote:
unless you're testing a hard-disk-wiper-outer or something.

well, you know I started out with my first computer project to be a disk operating system... but then I smartly decided to start with drawing user interfaces. So far, in the last 27 years of computer programmng, I have crashed many computers, but I have never managed to crash a user. :->

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

Re: More if's?

El Corazon2-Oct-07 5:05

El Corazon

2-Oct-07 5:05

PIEBALDconsult wrote:
Well, next time... TRY IT!!

Programming is like pinball. The reward for doing it well is the
opportunity of doing it again.
- programmers' saying

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

Re: More if's?

PIEBALDconsult2-Oct-07 5:29

PIEBALDconsult

2-Oct-07 5:29

But my wife is better at pinball than I am... oh, wait a minute...

~~Programming~~ Sex is like pinball. The reward for doing it well is the opportunity of doing it again. Cool | :cool:

Re: More if's?

MasterSharp2-Oct-07 10:16

MasterSharp

2-Oct-07 10:16

Keep my thread clean and PG. Kid, here.

Re: More if's?

ChrisKo2-Oct-07 7:39

ChrisKo

2-Oct-07 7:39

"ERROR: You've mortally wounded the compiler, please refrain from using Visual Studio again. FOREVER!"

Big Grin | :-D

Re: More if's?

Christian Graus1-Oct-07 17:21

Christian Graus

1-Oct-07 17:21

Seriously, you will never learn anything if you don't try basic stuff like this before asking others to explain it to you.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: More if's?

MasterSharp2-Oct-07 10:17

MasterSharp

2-Oct-07 10:17

OK, I got it, stop jumping on me!

Re: More if's?

PIEBALDconsult2-Oct-07 11:55

PIEBALDconsult

2-Oct-07 11:55

Stop asking to be jumped upon. Laugh | :laugh:

string to character

Assaf821-Oct-07 12:58

Assaf82

1-Oct-07 12:58

Hello
If i have a string how i can split it into character
Ex:
200134 i want to have 2;0;0;1;3;4

Thanks a lot

Assaf

Re: string to character

Luc Pattyn1-Oct-07 13:09

Luc Pattyn

1-Oct-07 13:09

you can access individual characters in a string by indexing string[index];
you can convert the entire string to a char array String.ToCharArray()
and you can look that up in the documentation; I think you best start studying C# in a book !

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google

Re: string to character

Matthew Cuba1-Oct-07 14:00

Matthew Cuba

1-Oct-07 14:00

Hi,

I would take a look at this page:

http://msdn2.microsoft.com/en-us/library/system.string(VS.80).aspx[^]

to see Microsoft's info on the String class.

Good luck!

It isn't enough to do well in life.
One must do good when and where one can.
Otherwise, what's the point?

Changing the DPI of an image

Christian Graus1-Oct-07 12:56

Christian Graus

1-Oct-07 12:56

Does anyone know how I can load a png or a jpg, change it's DPI ( so change the metadata that represents the DPI settng, NOT resize the image ) and then save that change ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: Changing the DPI of an image

TJoe1-Oct-07 13:19

TJoe

1-Oct-07 13:19

You should be able to load it using Bitmap.FromStream[^] or Bitmap.FromFile[^], but keep this[^] in mind.

You should be able to set the resolution using Bitmap.SetResolution[^].

Finally, you can save using Bitmap.Save[^].

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

Re: Changing the DPI of an image

Christian Graus1-Oct-07 14:22

Christian Graus

1-Oct-07 14:22

Great - thanks.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: Changing the DPI of an image

Luc Pattyn1-Oct-07 13:23

Luc Pattyn

1-Oct-07 13:23

Hi Christian,

AFAIK a PNG just holds pixels, it does not know resolution or physical dimensions.

JPEG supports "properties", they populate what gets handled by
Image.PropertyItems, Image.GetPropertyItem(), Image.SetPropertyItem()

IIRC you can not add properties to an image, but you can modify the existing ones;
and they are indexed by number, so you need to figure out the index for each property.
Here are some of them I once found on the web:

propNames.Add(0x010E, "ImageDescription");
propNames.Add(0x010F, "EquipMake");
propNames.Add(0x0110, "EquipModel");
propNames.Add(0x0112, "Orientation");
propNames.Add(0x011A, "XResolution");
propNames.Add(0x011B, "YResolution");
propNames.Add(0x0132, "DateTime");
propNames.Add(0x0128, "ResolutionUnit");
propNames.Add(0x0131, "SoftwareUsed");
propNames.Add(0x0201, "JPEGInterFormat");
propNames.Add(0x0202, "JPEGInterLength");
propNames.Add(0x0213, "YCbCrPositioning");
propNames.Add(0x501B, "ThumbnailData");
propNames.Add(0x502D, "ThumbnailResolutionX");
propNames.Add(0x502E, "ThumbnailResolutionY");
propNames.Add(0x5090, "LuminanceTable");
propNames.Add(0x5091, "ChrominanceTable");
propNames.Add(0x829A, "ExifExposureTime");
propNames.Add(0x9003, "ExifDTOrig");
propNames.Add(0x9004, "ExifDTDigitized");
propNames.Add(0x9204, "ExifExposureBias");
propNames.Add(0x9209, "ExifFlash");
propNames.Add(0x927C, "ExifMakerNote");
propNames.Add(0x9286, "ExifUserComment");
propNames.Add(0xA002, "ExifPixXDim");
propNames.Add(0xA003, "ExifPixYDim");

Hope this helps.

Luc Pattyn [Forum Guidelines] [My Articles]

Re: Changing the DPI of an image

Christian Graus1-Oct-07 14:22

Christian Graus

1-Oct-07 14:22

Awesome - I'll try that if need be. Thanks.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

for loop

Assaf821-Oct-07 12:32

Assaf82

1-Oct-07 12:32

how can i leave the for when i found what seach about
i put an if condition in a for loop if this condition is true i want leave the for?

thanks in advance

Assaf

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