C# Discussion Boards - CodeProject

ProtoBytes28-Jun-09 17:45

28-Jun-09 17:45

Hi,

I just completed two articles on Silverlight. The first is real basic 1.0 stuff. The second is 2.0 and more architechuraly involved but geard toward developers. I would like some community feed back and any performance results you find while testing the code. I am working on an older Pentuim 4 willimina with low memory. I'm getting bad performance results, I'd like to know what beefier systems report.

Thanks,

~TheArch

XAML Graphics Series - Part 2 Silverlight 2.0 Desktop Art Animation[^]

[Message Deleted]

JollyMansArt28-Jun-09 15:58

JollyMansArt

28-Jun-09 15:58

[Message Deleted]

Re: what is wrong?

Luc Pattyn28-Jun-09 16:19

Luc Pattyn

28-Jun-09 16:19

Hi,

the error message "not all code paths return a value" is clear: there is at least one way of traversing your method without encountering either a "return value;" statement or an abnormal exit (an Exception being thrown).

PS: showing your code in PRE tags would improve readability and make it easier to spot the problem.

Smile | :)

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DISCLAIMER: this message may have been modified by others; it may no longer reflect what I intended, and may contain bad advice; use at your own risk and with extreme care.

Re: [Message Deleted]

Luc Pattyn28-Jun-09 17:07

Luc Pattyn

28-Jun-09 17:07

please don't delete messages, it is considered rude and makes for a messy forum, leaving part of a thread.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

DISCLAIMER: this message may have been modified by others; it may no longer reflect what I intended, and may contain bad advice; use at your own risk and with extreme care.

64 bit windows

devvvy28-Jun-09 14:19

devvvy

28-Jun-09 14:19

hello

What are the common issues when you try to port your application to run on 64 bit windows? Is this pretty the only/first issue you'd run into?

<br />
Solution<br />
> Configuration<br />
   > Configuration Manager<br />
      > Platform<br />
         > select "New"<br />
            > You can then choose x86 (32 bit) or x64 (64 bit)<br />

Thanks

dev

Re: 64 bit windows

Christian Graus28-Jun-09 14:32

Christian Graus

28-Jun-09 14:32

I found that marking my app as being 32 bit forced compatibility mode in 64 bit, which was all I ever needed to do ( of course, this means it runs as 32 bit ).

Christian Graus

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about application domain

Seraph_summer28-Jun-09 10:11

Seraph_summer

28-Jun-09 10:11

anyone who can give me one simple but good example to demonstrate that application domain has to be used.

because I found most examples for application domain can not demonstrate clearly that the necessity of application domain.

thanks.

Re: about application domain

Manas Bhardwaj28-Jun-09 10:16

Manas Bhardwaj

28-Jun-09 10:16

This [^]might be an answer to your question.

Manas Bhardwaj
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Re: about application domain

Seraph_summer28-Jun-09 10:41

Seraph_summer

28-Jun-09 10:41

thanks.

but I still can not find some concret examples. It seems to me most people did not use it often.

this may be the reason that it is hard to find some good practical examples.

Re: about application domain

Pete O'Hanlon28-Jun-09 12:20

Pete O'Hanlon

28-Jun-09 12:20

I use an App Domain to load config files into a process and associate it with a DLL. I blogged about a variant of my code here[^].

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

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Re: about application domain

N a v a n e e t h28-Jun-09 17:13

N a v a n e e t h

28-Jun-09 17:13

Every .NET application will have an application domain associated with it and it will be created automatically. Creating your own application domains helps you when you are dealing with plugin kind of architecture. Each plugin can be loaded on a new application domain and it can work isolated.

If you are familiar with NUnit, they use a new application domain to load the assemblies specified by the user. This will help them to isolate user code execution and proper resource and memory cleanups. When an application domain is unloaded, all the memory associated with it will be cleared.

Hope that makes it clear Smile | :)

Navaneeth

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nested string

Seraph_summer28-Jun-09 10:08

Seraph_summer

28-Jun-09 10:08

how to implement the nested string case?

such as

string str="MessageBox.Show("hello")";

above code has compiled error anyway.

but how to do then?

thanks.

Re: nested string

harold aptroot28-Jun-09 10:14

harold aptroot

28-Jun-09 10:14

"MessageBox.Show(\"hello\")";

Re: nested string

padmanabhan N28-Jun-09 19:59

padmanabhan N

28-Jun-09 19:59

string str = "hello";
messagebox.show(str);

Padmanabhan
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Re: nested string

Henry Minute28-Jun-09 23:56

Henry Minute

28-Jun-09 23:56

char quote = '"';
string str = "MessageBox.Show(" + quote + "hello" + quote + ")";

Henry Minute

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System.AccessViolationException: Attempted to read or write protected memory.

Revathij28-Jun-09 1:29

Revathij

28-Jun-09 1:29

Hi,
I'm getting the following error when i unlock my machine after few minutes. i have run my application before lock the machine.

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at System.Windows.Forms.SafeNativeMethods.MessageBox(HandleRef hWnd, String text, String caption, Int32 type)
at System.Windows.Forms.MessageBox.ShowCore(IWin32Window owner, String text, String caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defaultButton, MessageBoxOptions options, Boolean showHelp)
at System.Windows.Forms.MessageBox.Show(String text, String caption, MessageBoxButtons buttons, MessageBoxIcon icon)
at SampleApplication.FormExportData.toolStripNewExport_Click(Object sender, EventArgs e)
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripButton.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

I don't know the reason for this error. Any knows the reason?

Thanks in advance Smile | :)

Deserialization Issue

al3xutzu0028-Jun-09 0:28

al3xutzu00

28-Jun-09 0:28

Hello Guys,
I have an issue with Deserialization. I have 2 Projects and I want to extport data to a binary file (serialize) in the first Project, and i want to read that date using the second application Deserialize.
The first Aplication will be given to hte end user, and will generate a Binary file that i want to read using the Admin application (the second one).
When i try to deserialize i receive this error:
"Unable to find assembly 'Application Timing', Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'."
I think i know the cause of the issue. The binary formatter puts the Application name,version and info in the file when it serilizes it, but i don't know how to bypass this.

Any suggestions? Confused | :confused:

Kind regards,
Alex

“Be the change you want to see in the world.”

Re: Deserialization Issue

Giorgi Dalakishvili28-Jun-09 1:22

Giorgi Dalakishvili

28-Jun-09 1:22

There are two options:
1. Put the class definition in a separate assembly and deploy it in both applications
2. Use SerializationBinder. Here is an example: Draw with Mouse[^]

Giorgi Dalakishvili

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C# and TCP

DannyAdler28-Jun-09 0:27

DannyAdler

28-Jun-09 0:27

Hi all,

Using C#, is it possible to handshake a certain remote port using only the first two steps (SYN -> SYN-ACK), and then cut-off the connection without the final third step (ACK)?

The requirement is NOT to send the ACK, and as far as I understand, the Connect method of the Socket, handles all the 3 steps handshake automaticaly.
So is there a way to, somehow, stop after the first two steps?

Thanks in advance,
Danny

Disallowing images in WebBrowser control

SimpleData28-Jun-09 0:13

SimpleData

28-Jun-09 0:13

Hi I have a WebBrowser control in my form and I would like it not to show/download images, because I want to stop wasting bandwidth.

Thanks.

Re: Disallowing images in WebBrowser control

dan!sh 28-Jun-09 1:33

dan!sh

28-Jun-09 1:33

I guess following code would work for you:

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            for (int i = 0; i < this.webBrowser1.Document.Images.Count; i++)
            {
                this.webBrowser1.Document.Images[i].Style = "display:none;";
            }
        }