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OK, that makes more sense now. Similar to how I thought it was originally, but not quite. The way you describe it, I don't see how it would work directly - plus invalidating a quarter of each gauge will end up creating a clip rectangle that covers most of the form (since each invalidated region gets added together to create a single rectangle).
However, you could probably still make it work with a bit more work on your part. Instead of drawing them all in the form's paint event, create a user control that encapsulates a single gauge. This will probably be a bit better anyway, as it could better handle some requirements changes (ie - what happens when the user decides that one of the gauges isn't important and wants it removed, or wants to add more, or even wants to adjust it dymanically).
The same concept applies to user controls as it does to forms - the paint event gets the same arguments and can be used in the same way. And once you have it narrowed down to a single gauge, then you're back to where we were, and you can begin to look at the clip region again to minimize drawing.
-----
In the land of the blind, the one eyed man is king.
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hi,
i have to display date in the format as follows, mm.dd.yyyy( e.g. 12.31.2006)
How i will be able to do it in asp.net web application using c#?
yog
hui gfgh kgdgrt njjn hjgkn
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yogita charhate wrote: i have to display date in the format as follows, mm.dd.yyyy( e.g. 12.31.2006)
How i will be able to do it in asp.net web application using c#?
This can be done in any C# application (ASP.NET is just a framework for designing web applications)
DateTime myDateTime = DateTime.Now;
string displayDate = myDateTime.ToString("MM.dd.yyyy");
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Thank you very much Colin, I've successfully completed the functionality.
have a nice day!!!!!!!!!
yog
hui gfgh kgdgrt njjn hjgkn
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i want to write the Nonrectangular form in c#.net 2005 .
in c# 2003 set FormBorderStyle to None and set BackgroundImage to file that shown as background then set TransparencyKey property to backcolor of BackgroundImage but this doesn't work in c# 2005 .
i don't want to use GDI+ and Region property of form .
please help me.thanks. ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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you can overwrite the OnPaint method:
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
System.Drawing.Drawing2D.GraphicsPath shape = new System.Drawing.Drawing2D.GraphicsPath();
Point[] points = new Point[6];
points[0] = new Point(0, 0);
points[1] = new Point(this.Width, 0);
points[2] = new Point((this.Width/2)+1, this.Height/2);
points[3] = new Point(this.Width, this.Height);
points[4] = new Point(0,this.Height);
points[5] = new Point((this.Width / 2) - 1, this.Height / 2);
shape.AddPolygon(points);
this.Region = new System.Drawing.Region(shape);
}
... and you will have a glasshour shaped form...
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In form i have different object (like picturebox),i want to acces these object from another class for example class1
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This is essentially the same question you asked before[^] and the results will be the same because the object you are trying to access is not instantiated because you are not fully instantiating the form the object comes from.
So far you have not told us the overall goal of your application is, of even this part of the application. I think that there is a better way to do what you are trying to do because from the description you have supplied so far I cannot invisage that the application is designed very well.
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Accessing an object properties or methods from another form is unallowed in a direct way. This is because when the compiler creates those objects, they are declared as private so u can not access it from outside the scope where it is created.
u can pass over this in one solution, this is by definning some public function in that form tha do the actions u need in the properties of those objects. And u should pass a reference of the first form to the second form through the constructor of the second form.
hope it helps.
best regards
Jamil Abou Khalil
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signimage wrote: In form i have different object (like picturebox),i want to acces these object from another class for example class1
The default access/visibility level of the form's objects is private. To use your form's objects in another class, you have to change its access level from private to public (or what is more appropriate) through its Modifiers property.
________________________________
Success is not something to wait for, its something to work for.
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you should declare object public in partial class and formName.objectName acces object .
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hi
i want to use TableAdapter in VC# 2005,how to use ??
does anybody know or have an article for this topic ?
thanks
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The table adapter is used to get data from database and put it inside a table with the help of the data set. tell us what u specifically need from this object and i may provide u with some help.
best regards
jamil abou khalil
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Hi,
How can I convert char[] to byte[] without loss of data?
Regards,
Hemant.
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How can I convert char[] to byte[] without loss of data?
typecast it
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and you
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char[] c = new char[2] { 'a', 'b' };
byte[] b = System.Text.Encoding.ASCII.GetBytes(c);
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That depends on how you want to convert it.
The char data type is a 16 bit unicode character. Unless you have restricted the characters to use only ASCII characters, each character can not be converted to a byte.
If you want to convert the string to it's encoded format, you can use the GetBytes method of the encoding you want to use. Example:
byte[] data = Encoding.UTF8.GetBytes(theChars);
---
b { font-weight: normal; }
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Hi all,
Is any body provide me information about IpAddress control in C#. i couldn't find any thing
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IPAddress Class[^]
If you're looking for an UI control that lets you specify an IP address there isn't one in the .NET Framework class library AFAIK. But there should be some custom controls for it out in the internet. I think there even was an article here on CP presenting such a control.
"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
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In my project two forms(form1 and form2)
when from form1 i try to Access any object of from2 then it give me error that object reference not set to an instance of object,
me using following way
in form1 i create the obg of from2 as
from2 f=new fomr2();
Bitmap b=(Bitmap)f.pictureBox1.Image;
if(b.GetPixel(100,100)==-1)
{//code}
it give the abovemention error in if statement when i try to accec the pixels of that object.
What should i do?????????
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Just by instantiating the form does not necessarily mean that the picture box will have anything in it. Thefore the error is correct.
Where does the picture box get its image? Once you have the answer to that then you know what else you need to instantiate in order to get your code to work.
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PictureBox take its image from file and i m sure that pictureBox has its image,this is not empty pictureBox but still it give thte above mentioned error
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signimage wrote: PictureBox take its image from file and i m sure that pictureBox has its image,this is not empty pictureBox but still it give thte above mentioned error
Obviously, it is an empty picture box at the time you are running your code otherwise you would not be getting the error.
Since you don't seem to be doing anything else with the form (at least from the code you provided) then I would suggest that you probably don't need the form anyway. Perhaps you just need to instantiate a Bitmap with the relevant file and use that.
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is there any way to access the from object from another class,usually i create the obj of form then using that obj we access the obj from form then why it give me the null reference erroe, and im sur that obj has obj referenc but it cannot send this reference to other class,(why)
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i face the same problem when ever i try to acces any object of form from any other calss (within same project)
how to acces the form object (like picture) from any other calss
i use the form obj to acces the formobjfrom other class but it give reference inmstance error
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