Re: Toolbox icon for user control - C# Discussion Boards

13-Mar-08 5:25

I've been tearing my hair out (and I can ill afford that!)
for hours trying to associate an icon in the toolbox for
a user control that I created. Whatever I do, the icon is
always the stock icon (the gear).

I created a 16x16 bitmap, and made it an embedded resource
in my control. I gave the control class an attribute as follows:

[ToolboxBitmap(typeof(CommentBox), "CommentBox.bmp")]
public class CommentBox : UserControl

I have a test form class, that when I bring it up in design mode,
I would like the control to show up in the toolbox (with its
correct icon). I have tried the "Choose item..." context menu item in the
toolbox to remove the control dll, and then reinsert it...to no avail.

Any suggestions what I'm missing?

Thanks,
Tom

led mike13-Mar-08 5:37

led mike

13-Mar-08 5:37

what version of Visual Studio are you using? It's possible that you have to create a custom control to associate a custom icon with it.

led mike

hain13-Mar-08 5:44

13-Mar-08 5:44

VS 2008, Mike.
Actually, I just want an icon for the tool box.

Re: Toolbox icon for user control [modified]

led mike13-Mar-08 6:05

led mike

13-Mar-08 6:05

hain wrote:
Actually, I just want an icon for the tool box.

That's what I'm talking about. I seem to remember in VS2005 (which I am still using) that you can't associate a custom Icon to a User Control. You may need to do a Custom Control if you want that feature.

led mike

hain13-Mar-08 6:17

13-Mar-08 6:17

Other than having a

protected override void OnPaint(PaintEventArgs pe)

method, what makes a custom control "custom"?
I tried inheriting my control from System.Forms.Control,
rather than UserControl.
Still no luck. Cry | :((

modified on Thursday, March 13, 2008 12:54 PM

led mike13-Mar-08 8:16

led mike

13-Mar-08 8:16

hain wrote:
what makes a custom control "custom"?

It's not that it's "custom" it's that it is not a UserControl. It implements one of more interfaces that provide various integration capacity with Visual Studio.

http://msdn2.microsoft.com/en-us/library/ms180794(VS.80).aspx[^]

here is what I have in VS2005 that works for an extenderProvider

    [ProvideProperty("ShowMRUList", typeof(ToolStripMenuItem)), 
    ToolboxItem(true), ToolboxBitmap( typeof(ToolStrip))]
    public partial class MRUMenuItem : Component, IExtenderProvider, IDisposable, ISupportInitialize

led mike

leppie13-Mar-08 8:30

leppie

13-Mar-08 8:30

Say you have a structure like this:

Root
 \__ Bin
 \__ Controls
      \__ Commentbox.cs
      \__ CommentBox.bmp

You could use the attribute as is above.

If however it exists in a another folder, you would have to refer to a type in that folder that has the same namespace of the folder.

Example if the BMP was in the Resources folder:

[ToolboxBitmap(typeof(Resources.ResourceManager), "CommentBox.bmp")]

xacc.ide - now with IronScheme support
IronScheme - 1.0 alpha 2 out now

hain13-Mar-08 10:17

13-Mar-08 10:17

Thanks Leppie

hain13-Mar-08 10:20

Unable to connect to Web Service

13-Mar-08 10:20

I found a great explanation at
http://www.bobpowell.net/toolboxbitmap.htm[^]
Thanks to all.

Manoj Sethi13-Mar-08 5:01

Manoj Sethi

13-Mar-08 5:01

Hi,

I am trying to access a webservice over the internet and getting the following exception.
'A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond ' .
I am trying to access the web service with the help of following code and getting the above exception.
protected void Page_Load(object sender, EventArgs e)
{
GlobalWeather gw = new GlobalWeather();
string cities =gw.GetCitiesByCountry("India");

}

Please help.

Muhammad Gouda13-Mar-08 5:04

Muhammad Gouda

13-Mar-08 5:04

I think you will get help better if you posted this question to the ASP.NET forum

M. Gouda
foreach(Minute m in MyLife)
{
myExperience++;
}

James J. Foster13-Mar-08 6:46

James J. Foster

13-Mar-08 6:46

You are getting a general communication error, so it could be any number of things. Go through the basic diagnostics first: can you ping the web service server from where your code is running? Try also to load the web service URL in your browser, if it's http based.

Skippums13-Mar-08 6:46

Skippums

13-Mar-08 6:46

Are you certain that the web service is running? Do you have the proper URL and permissions to access the WS? Try updating your web reference... does it work? If not, you either have an incorrect URL or the WS is down. If it does, then make sure the new Web Reference exports such a call. Let me know if you figure it out (or if both the WS responds to the update AND that method is exported).

Sounds like somebody's got a case of the Mondays

-Jeff

leppie13-Mar-08 10:57

leppie

13-Mar-08 10:57

My web service is down too, can you ask them to bring it up while you are at it?

xacc.ide - now with IronScheme support
IronScheme - 1.0 alpha 2 out now

Errors with typecasting

Leo Smith13-Mar-08 4:55

Leo Smith

13-Mar-08 4:55

Hello,

I am having problems with a tree control in a windows form application. Sometime yesterday a typecast that I was using wuit functioning and I can't figure out where the problem started. I have a class that is an extents the System.Windows.Forms.TreeNode class. It adds fine to the TreeControl, but when I go back and try to read the object and cast it as the new class it throws the following exception. What could have happened to make this start failing? I am including the adding and the locating a node. The adding program sometimes throws a duplicate value, which is tested by the FindChildNode before adding it. The FindChildNode is the biggest problem right now and is throwing the following Exception (Bolded line is throwing the error).

Message="Unable to cast object of type 'System.Windows.Forms.TreeNode' to type 'InternalApp.ECDTreeNode'."

<br />
public class ECDTreeNode : System.Windows.Forms.TreeNode<br />
{<br />
.<br />
.<br />
.<br />
   public ECDTreeNode FindChildNode(string cText)<br />
   {<br />
      ECDTreeNode ret = null;<br />
      for (int i = 0; i < Nodes.Count; i++)<br />
      {<br />
         ECDTreeNode tn = (ECDTreeNode)Nodes[i];<br />
         if (cText.Trim().ToLower().CompareTo(tn.Text.Trim().ToLower()) == 0)<br />
         {<br />
            ret = tn;<br />
            break;<br />
         }<br />
      }<br />
      return ret;<br />
      }<br />
   }<br />
   public void AddSorted(ECDTreeNode tn)<br />
   {<br />
      bool bFound = false;<br />
      try<br />
      {<br />
         for (int i = 0; i < Nodes.Count; i++)<br />
         {<br />
            if (tn.Text.CompareTo(Nodes[i].Text) < 0)<br />
            {<br />
               Nodes.Insert(i, tn.Text.Trim());<br />
               bFound = true;<br />
               break;<br />
            }<br />
         }<br />
         if (!bFound)<br />
            Nodes.Add(tn);<br />
     }<br />
     catch (Exception e) <br />
     {<br />
        MessageBox.Show(e.Message, "Exception Error", <br />
             MessageBoxButtons.Ok, MessageBoxIcon.Error);<br />
     }<br />
   }<br />
<br />
}<br />
<br />

Thanks for any help,

Leo T. Smith
Program/Analyst Supervisor

Gareth H13-Mar-08 5:04

Gareth H

13-Mar-08 5:04

Leo Smith,

What is the collection "Nodes" ?, Is it a collection of System.Windows.Forms.TreeNode or ECDTreeNode?

Regards,
Gareth.

Leo Smith13-Mar-08 6:00

Leo Smith

13-Mar-08 6:00

Nodes is a collection ECDTreeNodes.

Leo T. Smith
Program/Analyst Supervisor

Skippums13-Mar-08 6:39

Skippums

13-Mar-08 6:39

My bet is that you are unintentionally adding a node somewhere using a string to the collection, instead of sending your pre-created node. Put a breakpoint in on the problem line to see what type the node is, and I bet it is just a TreeNode. Once you see which node is causing the problem, try to trace back to when it was created, and I bet you have a line like "tree.Nodes.Add("Some string")" instead of creating your own ECDTreeNode object, then adding that object. Good luck,

Sounds like somebody's got a case of the Mondays

-Jeff

Gareth H13-Mar-08 6:47

Gareth H

13-Mar-08 6:47

Leo Smith,

If this was true, why do you need to cast it?, since Nodes[i] would return a ECDTreeNode. Think it might be a good idea to:

Trace.WriteLine("node == " + Nodes[i].ToString());

Regards,
Gareth.

Skippums13-Mar-08 7:38

Skippums

13-Mar-08 7:38

I think that Leo was saying that the objects are EXPECTED by him to be of his type... I don't think that the collection is actually strongly typed to his objects, though, which is what is leading to the error (I think). I also don't think that type casting an object to it's own type throws an exception, but I can't say that I have ever tried it to find out. Any comments on this, Leo? Is the collection strongly typed to your object, as understood by Gareth, or is it just a TreeNode collection, as interpreted by me?

Sounds like somebody's got a case of the Mondays

-Jeff

Leo Smith13-Mar-08 8:10

Leo Smith

13-Mar-08 8:10

Thanks both of you. The trace assisted in finding out that the was no error, since as Jeff suspected, I had added a string (although technically I inserted a string value and not a ECDTreeNode). I was unable to find this error only because I almost never insert a value. I had looked at all my Nodes.Add() calls before I posted. The trace let me know the type was wrong and Jeff's "you are probably adding a string" instead of a ECDTreeNode made me stop and look for something out of the ordinary.

Thanks,

Leo T. Smith
Program/Analyst Supervisor