|
Hi all,
i've got an form with a series of comboBoxes placed at intervals vertically. if i scroll down the form to one of the lower comboBoxes and then click on it, it tries to display the drop down list at the original location of the comboBox. Does anyone know if this position can be offset by the scroll position???
any suggestions welcome!!
Thanks
Paul
Paul Griffin
|
|
|
|
|
Hi all,
Are there any possibilities to get frame from wmv or live stream to still image (e.g. jpg)?
Can you suggest me what kind of solution may be here?
Is it directX or something?
Actually, I am making program that wraps WM Encoder 9 as object.
It would be wonderful to have feature to grab frame to jpg file.
I think I am not the only one with this problem, may be somebody
solved it and can give some ideas where to start.
Thank you in advance
Age
|
|
|
|
|
Alright,
Im out of the programming mode and into form design mode, which is so much fun, right. Heres my question, is there an easy way to change the forms border color? Ive looked around and it seems like all I can find are some sketchy answers. Any help would be greatly appreciated.
Thanks,
Ryan
|
|
|
|
|
I am developing a set of desktop apps using C# with wrappers for existing unmanaged c++ code. The unmanaged c++ code creates its own threads. The application runs fine as individual processes but each one takes a large amount of memory (~30M). To reduce the memory usage, I am trying to run all of the apps in a single process with multiple AppDomains.
The problem I have right now is that when I created multiple appDomains using the same unmanged dll. But all the unmanaged threads were created under the first AppDomain I created and not to AppDomain that created them.
Can someone help me out with this problem?
|
|
|
|
|
First of all there is never a one to one correnspondence b/w app domains and threads. Code from two different appdomains can execute in the same thread. When you create a new app domain and call AppDomain.ExecuteAssembly the execution is on the same thread. So in your case after creating the thread create a new app domain on each of the thread and execute the assemblies.
Meg Rules
|
|
|
|
|
Salamo 3alekom,
i'm doing a program like windows explorer.. things are going great except that i faced 2 problems that i couldn't solve.
1- i couldn't get the labels of drives (for ex. drive c:\ label is system) also the lable of "my computer".
2- i couldn't get the icons of the files & folders & drives .
anyhelp?
thanks![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
plextoR
|
|
|
|
|
Hello
I have a smal problem you, maby you can help me.
I got two forms, form1 is loaded on start, and in form1 there is a new form2 loaded cals form2.
when i then take hide on form1 and show on form2 i dont know what the objekt of form1 is named.
ex:
in Form1 i use
form2.show();
this.hide();
now i dont know the objekt of Form1 an there by i cant use show() on form1.
How do i Show form1 again?
//Jimmy
|
|
|
|
|
What you describe happens because Visual Studio instantiates Form1 in the following way.
<br />
static void Main() <br />
{<br />
Application.Run(new Form1());<br />
}<br />
As you can see, it does not create a variable to hold the object, it just
creates an instance of itself.
But you can declare a public static variable in Form 1 class to hold the reference to your form:
<br />
public class Form1 : System.Windows.Forms.Form<br />
{<br />
public static Form1 mainForm;<br />
<br />
(...)<br />
Then, before hiding your main Form you would store its reference in the mainForm variable:
<br />
mainForm=this;<br />
Since mainForm is a public static variable of the class Form1, you are now able to access your object in any Form your project has through this variable.
<br />
Form1.mainForm.Show();<br />
|
|
|
|
|
Thanks alot for the help =D
It solved my problem and i understand now why it dident work before=)
Best Regards
Jimmy
|
|
|
|
|
Hello all,
I am new to C# and I need to be able to cast from a byte array to a struct. What is the best approach to map the bytes into my structure?
I have:
struct Record
{
char a;
char b;
char c;
}
I want to be able to do this:
string myString = "123";
byte[] myData = System.Text.Encoding.ASCII.GetBytes(myString);
Record myRecord = (Record)myData;
Thanks in advance
|
|
|
|
|
Look at the Marshal class 
I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02
|
|
|
|
|
Is it possible to create a new dBASE IV .dbf (one that does not already exist) using C#?
Mark Sanders
sanderssolutions.com
|
|
|
|
|
For those who are interested...
string columnString = "NAME varchar(50), NUMBER int";
string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + directory + ";Extended Properties=dBase IV";
string sqlString = "CREATE TABLE " + tableName + " (" + columnString + ")";
OleDbConnection connection = new OleDbConnection(connectionString);
OleDbCommand command = new OleDbCommand(sqlString, connection);
command.Connection.Open();
command.ExecuteNonQuery();
command.Connection.Close();
Mark Sanders
sanderssolutions.com
|
|
|
|
|
Hi All,
Does anybody know the way, how to change datagrid scrollbars style into flat, similiar to MFC CListCtrl pmyListCtrl->SetExtendedStyle(pmyListCtrl->GetExtendedStyle()|LVS_EX_FLATSB); ?
Best Regards
|
|
|
|
|
in a pictureBox.Image, i put an picture by using memoryStream from a dataset connected to Sql Server.
when i navigate by a scrollBar from one record to another, picture is well displayed in the control
(setting to null value if no image in datarow, or reading memorystream if present)
if i modify picture by paste a new image or by reading a disk picture, saving it to another memorystream (or direct to disk also) by using image.save(stream,ImageFormat.xxx) or Image.Save("filename") is OK
but if i DON'T change picturebox.image and try an Image.Save() i get this :
System.InteropServices.ExternalException
generic error in GDI +
image length is zero kByte on disk (not writing) or corrupted in memoryStream...
I don't understand !! 
an Idea ?? thanks
Bruno Ferec (bferec@eni-consulting.fr)
Technical manager
|
|
|
|
|
While working on an Image Processing App I encountered the same kind of
generic error while using the Bitmap.Save() method. I did some searches in the www and it turns out that the Image/Bitmap class uses some type of on-demand loading scheme that requires the file to be open all through the object's life (therefore minimizing the amount of memory being used by big images)
This creates several problems. For instance, when you call the Image.Save("filename") to save the image to same file from where it was loaded, your program crashes because it is trying to overwrite an open file.
One workaround for this would be to save the changes to another file or to use unmanaged code to load all the image to memory.
|
|
|
|
|
There is a much simpler solution.
// Create a memory stream
MemoryStream mStream = new MemoryStream();
// Save the image to the memory stream
Image.Save(mStream, ...);
// Then write the buffer to a file.
fileStream.Write(mStream.GetBytes(), 0, mStream.Length);
I'm doing this off the top of my head, so the syntax may be slightly off, but the concept is solid. I use it all the time.
Thanks,
Steven
|
|
|
|
|
Yes, I have also used that technique of caching the Bitmap in a memoryStream. You can then dispose the bitmap object and work only with the memoryStream.
The only problem is that when working with large images (as was the case of my image processing program) this imposes a great cost in terms of memory:
1. All the bitmap info is in memory
2.Each time you want to display your bitmap in the screen you have to do something like pictureBox1.Image=Bitmap.FromStream(mStream,...)
So this is only a solution if the user has a lot of free memory or if the images he is working with are small.
|
|
|
|
|
Hi,
I'm developping two projects which share a common library. No problem.
The problem is that I would like to keep a library version, to know which features it has, but I would like that both using projects share this library (only one) without considering the version number. I mean, I would like that GAC doesn't exist!
What am I doing wrong?, what should I do?
Thanks in advance,
Edgar
__________________________________________
Edgar Berengena Moreno
Software Engineer
Appeyron Research
|
|
|
|
|
Just remove the file from the GAC (windir\Assembly i think) And reference the file from a common location
I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02
|
|
|
|
|
By the time Im done processing some data from a socket i received on, 2 or more packets have been received and are in the queue/buffer. When I call receive it returns all bytes as in all the packets waiting into the byte array.
Is there anyway to just receive one of those packets??... they are of all different length. I think i could just send the length of the packet as the first 4 bytes (Int32) and read in 4 bytes determine the length and then read that many, but i would think there may be a way to just ask the socket to only fill the byte array with the first packet in the queue??
Its TCP all blocking sockets.
Any help would be appreciated, i realize i could fix my problem by doing what i mentioned above (sending the length at the front, first 4 bytes), but it seems there should be a better way??
|
|
|
|
|
I would like to store data in a XML File and show the data in format like the .NET Help Documentation. Have I to design a lot of HTML Pages or is it possible to show XML data easy as a WebPage? Are there special .NET classes? Which?
How to do this? What's the way to get on to it?
Thanks
Stefan
|
|
|
|
|
I want to read a date string from a log file it is in this format ...
17/Apr/2003:06:40:39 +1000
I would like to parse this then display it as the local time format.
I am lost in the world of Globalization
James McCutcheon
|
|
|
|
|
Found my own solution ... in case anybody else wants to know:
activitytime = "01/Apr/2003:11:01:02 +1000";
DateTime dt = DateTime.ParseExact(activitytime, "dd/MMM/yyyy:HH:mm:ss zzz", new System.Globalization.DateTimeFormatInfo());
|
|
|
|
|
James McCutcheon wrote:
Found my own solution ... in case anybody else wants to know:
I always appreciate people posting their solutions if they find them. Then if someone else with the same problem comes across the same problem and finds your post, they can know the solution, too.
"Do unto others as you would have them do unto you." - Jesus
"An eye for an eye only makes the whole world blind." - Mahatma Gandhi
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
