C# Discussion Boards - CodeProject

Re: Embedded User Control in IE Problem

14-Jun-04 4:24

Yes, but which membership condition did you use? As I mentioned in my email, only host evidence and strong name evidence are supported by IEExec.exe, the runtime CLR host for Internet Explorer. Other evidence is not gathered.

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Yolan14-Jun-04 4:34

Yolan

14-Jun-04 4:34

I used strong name and URL. When I used strong name I used import to select the dll.

Re: Embedded User Control in IE Problem

Heath Stewart14-Jun-04 4:47

MultiThreaded Socket Pimp!

14-Jun-04 4:47

If you're using both membership conditions currently, only use one. I recommend the URL mebmership condition, using an asterisk (like http://www.mydomain.com/dir1/*) if your assembly depends on other assemblies located in the same directory).

Also, make sure you go through every single Color property in your entire control - not just the control itself, and make sure you're not using system colors.

Other than that, I don't know what to tell you. I've embedded many user controls this way as have other people.

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Anonymous14-Jun-04 3:31

Anonymous

14-Jun-04 3:31

Hi!

I am doing an innovative P2P app in C# with .NET 1.1

The Peer I'm working on has a few threads to manage the I/O.
The Peer has the port number 11 000 to listen for request.
This port is manage by code that is used as -pardon my my analogy!- a pimp for incoming requests.

When another Peer(client) connects to your Peer(server), it connects to port 11000 and ask
the pimp for a socket to pursue communication. The pimp sends back a socket number and
tell another part of the p2p app -the bookie- to create the port and wait the client.

Now, the problem is very simple Wink | ;-)

The bookie is high, and he does not creat and open the right port -he uses a ramdom one apparently!
Right now the code for the client and the server is running on the same machine.

So my question is: How can I have the bookie create the port that the pimp asked him for ????

Thank! Smile | :)

ps.: sorrhy for the bad analogies :they work Wink | ;)

How to? Adding a line to a textbox without reloading whole text?

matthias s.14-Jun-04 2:53

matthias s.

14-Jun-04 2:53

Hi,

two questions: First, is there a limitation on the textbox in terms of capacity, e.g. how much text can I put into? Second, is there a way to "add" text to a textbox without loading the complete text using the Text property? Cool would be some kind of WriteLine(string) function. Can this be done? I'd like to create something like the output-window in various IDE's, where it seems that text is added to at the end whenever certain events occur.

Thanks in advance,

Matthias

If eell I ,nust draw to your atenttion to het fakt that I can splel perfrectly well - i;ts my typeying that sukcs.
(Lounge/David Wulff)

www.emvoid.de

Re: How to? Adding a line to a textbox without reloading whole text?

Dave Kreskowiak14-Jun-04 3:19

14-Jun-04 3:19

The limit for a TextBox control .NET is available memory, IIRC. The "usable" limit is machine, and user, dependent. By this, I mean when you add or remove text, that operation takes longer the more text you have in the TextBox control already and what your doing.

There is no way to get around the Text property. You can use the TextBox's AppendText method to add to the end of the text string, but this will also cause the .NET Framework to copy the current contents of the Text property to a new string, appending the new text from AppendText, then dropping the original string. This is true for ANY modifications to the Text property of the TextBox.

If you wanted to control how much information you display in the TextBox, you'll have to write some code to remove the lines at the start of the Text property. Probably searching for the first occurance of the NewLine characters and removing the text up to and including that point in the string.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

blinking

sreejith ss nair14-Jun-04 2:31

sreejith ss nair

14-Jun-04 2:31

hai there,

i developed a small business application. in my application,one of a win form contain panel control. i am dynamically creating few label controls and placing into it.

Here we can say the different label controls that i placed in panel denotes different stages of a same process.

Ok we can get into my issue.I need to highlight individual process stages into different color code or some thing.apart from this these controls(denoting process) need to blink when ever i am working with that perticular form.

to be consice : in excel if we copy a cell it will get blinked and will remain until you past somewhere. here i need that blinking facility to my label controls which is dynamically added into that panel. And need to be there until i dispose the form.

any idea ?

Blush | :O

Re: blinking

Dave Kreskowiak14-Jun-04 3:23

Re: ListView colomn color

14-Jun-04 3:23

You would have to create your own control to do this. You could inherit from the TextBox or Label controls and add a Timer to it that fires off an event and signals your control to change, say, the background color on each Tick event of the timer.

BTW: Excel doesn't "blink" anything when you copy, you get the marching ants box around the selection you copied.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

ListView colomn color

ahlam-roshan14-Jun-04 0:30

ahlam-roshan

14-Jun-04 0:30

I want to change the color of a colomn if I click on the colomnheader. I don' t know how to do this. Can someone help me please.

Corinna John14-Jun-04 1:28

Corinna John

14-Jun-04 1:28

You can change the background colour of the sub-items in this column:

<br />
private void listView_ColumnClick(object sender, ColumnClickEventArgs e) {<br />
		<br />
foreach(ListViewItem item in listView.Items){<br />
   item.SubItems[e.Column].BackColor = newColor<br />
}<br />
<br />
}<br />

Re: ListView colomn color

ahlam-roshan14-Jun-04 2:41

ahlam-roshan

14-Jun-04 2:41

thank you for your reply. I tried what this code but the background of the listview take the color but not only the subitems, so the whole listview is colored, do you know maybe why??

Re: ListView colomn color

Heath Stewart14-Jun-04 4:22

How to protect a software from crack

14-Jun-04 4:22

What Corinna said would only apply to the background for items, obviously. If you want to color the entire column for a ListView, I suggest you take a look at the article here on CodeProject: C# List View v1.3[^]. It requires that you P/Invoke certain native APIs (like SendMessage) and handle windows notification messages, since the ListView merely encapsulates the List-View common control (most controls in Windows Forms encapsulates Windows common controls, actually).

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SoftComplete14-Jun-04 0:24

SoftComplete

14-Jun-04 0:24

Often, having created some project (commercial software, shareware) developers have troubles with creation of protection of their products from hackers. So they create some protection themselves or look for ready-made tools for this purpose.
If you need to protect your software from crackers click here http://www.softcomplete.com to find more info

Re: How to protect a software from crack

Dave Kreskowiak14-Jun-04 3:28

Re: How to protect a software from crack

14-Jun-04 3:28

P*ss off Spammer!

There's no way your going to protect anything from a determined hacker anyway...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Wackatronic14-Jun-04 6:53

Wackatronic

14-Jun-04 6:53

Ban this idiot plz!

Yes, I program in VB, but only to feed my addiction to a warm place to sleep and food to eat!

Visit my Code Project blog (Mobile Audio project)[^]

Hide taskbar and change DPI settings??

r913-Jun-04 23:47

13-Jun-04 23:47

Is it possible from C# to hide the windows taskbar?

And how do I change the DPI settings?
(I want to force 96 DPI, Small Fonts).

Thanks

Regards
Thomas

Dave Kreskowiak14-Jun-04 3:47

14-Jun-04 3:47

No, you can't hide the task bar. Start/Run "gpedit.msc" to open up the policy editor, then select User Configuration/Administrative Templates to see everything you can do to the Desktop/Start Menu/Task Bar/System/...

The settings for the video card shouldn't be messed with by your application. Changing these will affect all the users of a machine, not just one.

You would have to change these settings in the Registry first, then retart the machine for them to take effect. See HKLM\SYSTEM\CurrentControlSet\Hardware Profiles\Current for the settings.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Heath Stewart14-Jun-04 4:16

14-Jun-04 4:16

Actually, you can using by P/Invoking the SHAppBarMessage function and sending ABM_SETSTATE. You can turn on it's auto-hide feature, which Internet Explorer does when you switch to full-screen mode (which I love for certain purposes).

I agree about the DPI, though. Changing the resolution (when necessary, like for a full-screen game or kiosk) is one thing, but the DPI is another.

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r914-Jun-04 6:55

14-Jun-04 6:55

Heath Stewart:

I am new to windows programming.

Can you show me how to use the SHAppBarMessage function via P/Invoke?

Regards
Thomas

Heath Stewart14-Jun-04 8:43

14-Jun-04 8:43

You should first read about P/Invoke. See Consuming Unmanaged DLL Functions[^] in the .NET Framework SDK. Just jumping into something without understanding is never a good idea.

You can P/Invoke the SHAppBarMessage like so:

[DllImport("shell32.dll")]
[return: MarshalAs(UnmanagedType.SysUInt)]
private static extern IntPtrSHAppBarMessage(
  [MarshalAs(UnmanagedType.U4)] int dwMessage,
  APPBARDATA data);
 
[StructLayout(LayoutKind.Sequential)]
public struct APPBARDATA
{
  [MarshalAs(UnmanagedType.U4)] public int size;
  public IntPtr handle;
  [MarshalAs(UnmanagedType.SysUInt)] public IntPtr callbackMessage;
  [MarshalAs(UnmanagedType.SysUInt)] public IntPtr edge;
  public RECT rc;
  public IntPtr lParam;
}
 
[StructLayout(LayoutKind.Sequential)]
public struct RECT
{
  public int left;
  public int top;
  public int right;
  public int bottom;
}

In order to pass the right messages, read about the SHAppBarMessage[^] API.

There is also an example on CodeProject you can take a look at. Read C# does Shell, Part 3[^].

To get the HWND for the task bar, you'll need to also P/Invoke FindWindow and search for the window class "Shell_TrayWnd". That'll give you the IntPtr to assign to the APPBARDATA.handle field.

You can find more P/Invoke signatures for common Windows APIs at http://pinvoke.net[^].

Microsoft MVP, Visual C#
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Date time format

Member 445055113-Jun-04 23:46

Member 4450551

13-Jun-04 23:46

Can someone kindly tell me how to get the date part(dd/mm/yyyy) and also time part (hh:mm:ss) from the DateTime object in C#

I have tried but I dont get the format as I want it

Tanx
ormore

Re: Date time format

Stefan Troschuetz14-Jun-04 1:12

Stefan Troschuetz

14-Jun-04 1:12

See the documentation for the ToString method of DateTime class. It contains an example that demonstrates different ways of formatting a DateTime value.

www.troschuetz.de

Re: Date time format

Heath Stewart14-Jun-04 4:12