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Hi all!
I don't know if anyone can reproduce this - sometimes (unpredictably as it seems to me) Image.GetWidth() throws a System.ArgumentException.
best regards
björn
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That usually happens when you are trying to access properties on an Image instance that has already been disposed. Because the underlying unmanaged resource has been released, GetWidth throws exceptions.
You can try placing breakpoints on the lines where Dispose is called and checking if there are any accesses after Dispose.
Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro
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oh, yes, that helped, thanx.
I disposed the image of a PictureBox in another thread and (just two lines later) setting a new image.
That explains why it happened so scarcely.
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hi
i have a datagridview in which i have a a datagridviewcomboboxcolumn.
The problem is i need to populate 2 values from 2 datasources in the same dropdown .
for example this populates only 2 to 10 in the combobox i need to customise it for a pair of values
how to do it ??
ArrayList arlTilsagnType = new ArrayList();
InitializeComponent();
for (int i = 2; i < 10; i++)
{
arlTilsagnType.Add(Convert.ToString(i));
}
dataGridViewComboBoxColumn1.DataSource = arlTilsagnType;
Anirban Pramanik
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I have application settings (Configurations) which can be modified by the user at runtime. The settings are stored in a file or in a database.
Where do I locate this file? E.g. the installation folder C:\Program Files\MyExampleProgram\Settings is write-protected for a normal user.
The C# program is installed on Windows Systems post Win98SE.
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Can't you put it in the application installation directory? In fact, the standard App.Config file gets placed in the same directory as the executable, with the extension executablename.exe.config.
Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro
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Hi
Put the config-file in the application data path in the Home-directory of the User on NT-based OS (C:\documents and settings\%UserName%\Application Data\).
André
'A programmer ist just a tool which converts caffeine into code'
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Hello Thanks for the reply!
Can I read the Home-directory folder out of the system settings? Or how should I handle multi language installations (french, german, ...) which do not name the folder 'documents and settings' but 'dokumente und einstellungen' for instance?
Greetings
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Yes, that's the right solution.
'A programmer is just a tool which converts caffeine into code'
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Hi,
I'am starting to learn how to write a custom control to use in my C# applications. Actually it's designed to the Compact Framework but as my tries say to me, my problem is the same in the normal Framework.
I need to have a textbox and a command button joined to it at its right border (think a textbox including a browse button). Actually my custom control inherits from the Panel, and I instanciate the textbox and the button in the constructor. It works perfectly, but when I use it in the designer, as it derives from the Panel, I can put other controls in it (it's a container). I don't wan't this behaviour (which also doesn't permit to click in it to move it, I have to point the borders, like a real Panel).
Is there another way to do that ?
Thanks all ! 
Stephane.
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Just found the answer : I inherited my control from Control instead of Panel, as it has a Controls collection too.
Maybe this can be useful to someone else !
Thanx, Stephane
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Im trying to call the function ChildWindowFromPoint but it seems that it always asumes the Parent window is in the Upperleft hand corner, meaning even if the parent form is in the lower right it wont find the child control until i click around in the area in the upper left hand corner. Its all a little hard to describe here but in anycase ill include the code on how im calling the function. Im using global mouse cords, with the upper left of the screen being 0,0.
[DllImport("User32")]
public static extern IntPtr ChildWindowFromPoint(int handle, int x,int y );
int chihan = (int)Form1.ChildWindowFromPoint(handle,e.X,e.Y);
//show if it found a pointer
MessageBox.Show(chihan.ToString());
//try to display the window text of the child control
StringBuilder s = new StringBuilder(1024);
Form1.GetWindowText(chihan,s,1024);
MessageBox.Show(s.ToString());
I dont know what im doing wrong, i can find the parent control without a problem, reguardless of where it is located on the screen, and im using the same cords as i use in the function above,
Thanks alot for your time
~Jesse
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You probably need to convert the coords to the parents client coords. And, its going to depend on what coord system its coming from as to what you'd have to do. Try looking into PointToClient and PointToScreen.
--
Joel Lucsy
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Just wondering if anyone can point me in the right direction or give me some useful pointers on how to pass data from a pop-up window to a crystal report.
I have worked out how to get the fields I want, the values populate and everything is fine, but i need it to be able to have a date selection on it (Ie load this report where date between start and finish)
I appreciate the feedback.
Paul.
Carnal (Car-Lan) Car and Computer Club http://carnalonline.org.
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private bool SaveFile(string path, ref byte[] buffer)
{
System.Security.Principal.WindowsImpersonationContext impersonationContext;
impersonationContext = ((System.Security.Principal.WindowsIdentity)User.Identity).Impersonate();
FileStream newFile = new FileStream(path, FileMode.Create);
newFile.Write(buffer, 0, buffer.Length);
if (newFile.CanRead)
{
newFile.Close();
impersonationContext.Undo();
return true;
}
else
{
impersonationContext.Undo();
return false;
}
}
I get an invalid cast on this line:
impersonationContext = ((System.Security.Principal.WindowsIdentity)User.Identity).Impersonate();
Any idea why? This is when i try to impersonate while uploading a file. I can;t seem to solve the problem.
-----------------------
In addition, if i remove the impersonation stuff, i get prompted, if i enter the username and password it works fine. So am i using the right code to impersonate?
-- modified at 23:14 Wednesday 2nd November, 2005
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Use a debugger to inspect the type of User.Identity, apparently it is not of type System.Security.Principal.WindowsIdentity.
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Morality Apart from God
Judah Himango
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When i compile it, there is no error, but its hosted on a remote server. If i run it on local server its fine, on the remote server i get the error.
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Apparently, there are four classes implementing IIdentity, according to this[^] page. Maybe you're getting an instance of some other class among the four?
Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro
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Although I maintain a fair size WinForms app, I've not really used the tab control much. I'm using one now, and I find that if I set the buttons to appear on the left, no text appears on them. I got some text on there once, but I have no idea how, or why it won't work. I've made the buttons big to make sure it's not that the text doesn't fit, I'm not sure what else to try before I draw the damn things myself.
Christian Graus - Microsoft MVP - C++
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Hey CG.
Yeah, I've run into problems with the WinForms tab control many times. There are several owner-drawn implementations out there that draws tabs correctly for tab orientations other then the top orientation.
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Morality Apart from God
Judah Himango
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Hello,
I'm quite new at this and have a question. How do I run one of the demos after I have downloaded the code. Do I create a blank solution and paste the folder in as a new project?? Help please. Thanks.
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The code you download should include a project file. If it doesn't, ask the author.
Christian Graus - Microsoft MVP - C++
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Sorry but I've downloaded several of the available source codes and I can't get any of them to work. I'm getting all kind of errors. I'm just not doing something right. All the programs are webforms if that helps. Also, I'm not getting the common localhost error. I don't think I've gotten that far yet.
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Nkdnt wrote: All the programs are webforms if that helps
Ah - in that case, you need to set up IIS to run a virtual folder in your apps root directory.
Or you may have installed IIS after VS, or for some other reason your ASP.NET ISAPI filter may not be registered. Try running aspnet_regiis in your .NET install folder.
Christian Graus - Microsoft MVP - C++
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