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If you want to call a method from .Net assebmly you dont have to use DllImport, you can juse use reflection (see System.Reflection namce space). Dllimport mainly used to interface with native dlls not .Net assebmly. For example if you want to open a file and get the file handle you may write something like
[DllImport("kernel32",CharSet=CharSet.Unicode,SetLastError=true)]
static extern unsafe int CreateFile(
string filename,
uint desiredAccess,
uint shareMode,
uint attributes,
uint creationDisposition,
uint flagsAndAttributes,
uint templateFile);
in your .Net code, and call this as like any other .Net methods.
Rao
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Hi,
Thanks for the reply.
Can you please show me a snippet how to access my methods in a dll file which was created by me.
Thanks and regards
Emran
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Hi All,
I need to add to my Form some table.
I need to arrange the info in this table in grid but i don't know how to do is.
I add ListView object to my form , but i can`t create grid in it to see in more clear way the info in it.
The info that i need to add to my table has no connection to database - so i cant use the example that are in here.
Thanks for any help.
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question:
how to track any website name visited, visiting date,time,web pages visited by a user?using Dot net,is it possible ,if not what r the other techniques to make it possible?
Makarand Mannur
-- modified at 1:22 Saturday 18th February, 2006
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Hi,
What is the difference between Agile and Extreme programming please?
Thanks
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Extreme is a subset of Agile. In other words Extreme programming is a type of Agile software development.
ColinMackay.net
Scottish Developers are looking for speakers for user group sessions over the next few months. Do you want to know more?
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Hello,
I am working on a project where i have to fill a recgangle on a panel against a button click.When the button is clicked it works fine the rectangle is drawn but the problem accours when i resize my form or some other form is open on it the drawing that is on the panel is wash out imen it is clered from the panel i am writing the code.If any one knows the solution plz let me know.
Thanks
Regards
Atif
public void btn_click(object sender,EventArgument e)
{
Graphics g=mypanel.CreatGraphic();
SolidBrush b=new SolidBursh(Color.Red);
g.FillRectanle(b,0,0,40,40);
}
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assuming u'r working on a window's form application you should add code to the form paint event.
there are no facts, only interpretations
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I want 2 know how 2 step up beyond the intermediate level in C#
Prynce
-- modified at 20:36 Friday 17th February, 2006
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Program a lot, make a lot of mistakes and correct those mistakes.
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- You can study the EMCA specs for CLI and C#.
- Data structures and algorhitms in C# (bruno preiss).
- Familiarise yourself with every single class in every assembly, starting with mscorlib.dll, use
Reflector to see what goes on inside.
- Read the MSDN docs for the classes u are not familiar with.
- Understand what can and cant be down (iow what you need to get the job done).
- Look at opensource implementations of the runtimes.
- Look how other languages integrate with C#/.NET.
- Learn the major technologies available in the .NET framework.
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Has anyone successfully connect to a linux box using Tamir.Sharpssh? If so how???
Thanks,
Joseph
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I adapted the code and am using the scp client in my application, however I used a commercial implementation of the ssh layer.
.............................
There's nothing like the sound of incoming rifle and mortar rounds to cure the blues. No matter how down you are, you take an active and immediate interest in life.
Fiat justitia, et ruat cælum
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Everyone says that the sftp part of this works great but i need to run commands remotely. Do you have to authenticate using the scp? I can't get the key from my computer(XP) to a Gentoo Linux box. If you know how can you help me??
Thanks!!
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I have a timesheet pogram that I am trying to convert from a DS based program to C#. I have all of the functionality of the old program, and then some, except for printing the report ( which I will gve an example of ). To descibe what I have to use for data, I have a DateTime Array(one for each day of the week). In this structure, I populate it with info from a table. The table includes the employee id, date, time in, time out, hours worked, type of work, and lunch break. Where could I start to get this information into a report via Crystal Reports? I couldn't paste the report for a good representation( it wrapped). I don't have web link for it either..and doesn't look like attachmants are allowed.....
Anyway...the main question is how do I use structures and arrays with Crystal Reports? Is it even available? I need this report to look as close to the old thing as possible..that what the payroll department wants...
And where should I start learning crystal reports?
Common sense...the least common of the senses used
Jude
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Hi everyone, freshly arrived in the System.Drawing namespace , I try to figure out how it works. But for this precise problem,
I need your help: I am trying to load an image in a Bitmap object. The source file is a .pgm grayscale image (format specifications:
http://netpbm.sourceforge.net/doc/pgm.html)
I don't know if there already exists some method from a class that can help me convert the data or if I should write something on my own. In this last case, I really lack some idea.
As always, it would not be fun if I was not in a hurry, let's say that my project is turning into an emergency.
Any help is welcome
Thx
Law
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write in a memory stream the bmp header and decode the pgm data to the stream and load the stream as a bitmap and voila.
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Thank you for your help.
I just like to insist on the beginner aspect of my question. Could you be a more precise?
I don't think I need the bmp header, I just want to use the System.Drawing.Bitmap class.
Also, the decoding phase from pgm to bitmap is a bit confusing for me. What PixelFormat should I use for the receiving bitmap?
Is the conversion from a single int to a pixel is okay?
grayValue = br.ReadByte();
pixel = Convert.ToInt32(grayValue);
bmp.SetPixel(i, j, Color.FromArgb(pixel,pixel,pixel)
Thanks
Law
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you forgot to scale the grayvalue
# Each gray value is a number proportional to the intensity of the pixel, adjusted by the ITU-R Recommendation BT.709 gamma transfer function. (That transfer function specifies a gamma number of 2.2 and has a linear section for small intensities). A value of zero is therefore black. A value of Maxval represents CIE D65 white and the most intense value in the image and any other image to which the image might be compared.
in the exemple 15 so pixel =(int)((grayValue *255)/15);
PixelFormat should be the default Canonical
# Each gray value is represented in pure binary by either 1 or 2 bytes. If the Maxval is less than 256, it is 1 byte. Otherwise, it is 2 bytes. The most significant byte is first.
so you need to do either a readbyte or readuint16
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Tank you,
but even when scaling, I still have some troubles. I can not understand why.
But the good news is that I have found a library for .NET languages that opens many type of image files. It's called DEvIL.NET and can be found at: http://www.mastropaolo.com/?page_id=20
This solution is easy to set up an works pretty fast.
Thank you for your help CiNN
Law
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Um trying to add web service in a pocket PC application when i debug my solution there is an unhandled exception when trying to connect to the web service. this exception is "Can not establish connection to network". please tell me how I could fix that exception.
Eng.Kholyo
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I'm trying to add a Web Reference to my Project...But cant seem to even get a RSS Feed to add to it...
I right click Add Web Reference, I'v searched for URLs like Microsoft to add a Web Service but cant seem to get any...
I get this error which dont really apply I had already done it in the past "The proxy settings on this computer are not configured correctly for web discovery. Press F1 for more information."
Tools -> Internet Options -> Connections -> Lan Settings ...I did that again...But still cant seem to add a Web Reference...
Any Ideas ?? Thxs In Advance..
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Hello folks.
I currently succeeded to transfer voice through the network using Directsound From directx9 but i need to make equilizer Like in yahoo when the user talks it shows how much the intensity of the voice and how much its volume any help regarding that please on how can i start with this ?
Human Knowledge Belongs to the world.
-- modified at 13:33 Friday 17th February, 2006
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Can any one point me to an application to generate UML from C# code and the other way.
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