Re: Windows User Control - C# Discussion Boards

CommandName in a Windows Application

22-Mar-07 5:58

Tipzen wrote:
Can someone pls help me with this project

Sure, post the code you've already written, and we'd love to help. otherwise, we'd not be helping, we'd be doing your homework.

Is this C# 2.0 ? If so, the backgroundthread class is the one to use. Beyond that, your course materials should tell you all you need to get started, at least. Ask questions when you've tried doing your own homework.

To be honest, these instructions are very explicit. I don't see how you could have trouble starting at least.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: C# Multi threading

sewez8-Sep-08 5:38

sewez

8-Sep-08 5:38

actually i have the same problem and i'll show you what i got so far.

class DrawBall
{
   private float initialX;
   private float initialY;
   private Random generator;
   private int direction;
   private Panel drawPanel;
   private float radius;
   private float velocity;

   public DrawBall( Panel panel )
   {
      drawPanel = panel;
      generator = new Random();
      radius = (float)generator.Next( 10, 30 );
      float temp = drawPanel.Size.Width - ( radius * 2 );
      initialX = 100;
      initialY = 100;
      direction = generator.Next( 8 );
      velocity = 10;
   }

   private delegate void DrawBallDelegate( float x, float y );
   private void DrawBallInPanel( float x, float y )
   {
      Graphics myGraphics = drawPanel.CreateGraphics();
      myGraphics.FillEllipse( new SolidBrush( Color.Red ),
         x, y, radius * 2, radius * 2 );
   }

   private delegate void ClearPanel();
   private void ClearBallsPanel()
   {
      Graphics myGraphics = drawPanel.CreateGraphics();
      myGraphics.Clear( Color.White );
   }

   public void BallGenerator()
   {
      while ( true )
      {
         drawPanel.Invoke( new DrawBallDelegate( DrawBallInPanel ),
            new object[] { initialX, initialY } );

         Thread.Sleep( 50 );

         if ( ( initialX  <= drawPanel.Size.Width ) ||
            ( initialX > 0 ) || ( initialY > 0 ) ||
            ( initialY <= drawPanel.Size.Height ) )
         {
            switch ( direction )
            {
               case 0:
                  initialY -= velocity;
                  break;
               case 1:
                  initialX += velocity;
                  initialY -= velocity;
                  break;
               case 2:
                  initialX += velocity;
                  break;
               case 3:
                  initialX += velocity;
                  initialY += velocity;
                  break;
               case 4:
                  initialY += velocity;
                  break;
               case 5:
                  initialX -= velocity;
                  initialY += velocity;
                  break;
               case 6:
                  initialX -= velocity;
                  break;
               case 7:
                  initialX -= velocity;
                  initialY -= velocity;
                  break;
            }
         }
         else
         {
            if ( direction == 0 )
               direction = 4;
            if ( direction == 1 )
               direction = 5;
            if ( direction == 2 )
               direction = 6;
            if ( direction == 3 )
               direction = 7;
            if ( direction == 4 )
               direction = 0;
            if ( direction == 5 )
               direction = 1;
            if ( direction == 6 )
               direction = 2;
            if ( direction == 7 )
               direction = 3;

            velocity = (float)generator.Next( 10, 20 );

            switch ( direction )
            {
               case 0:
                  initialY -= velocity;
                  break;
               case 1:
                  initialX += velocity;
                  initialY -= velocity;
                  break;
               case 2:
                  initialX += velocity;
                  break;
               case 3:
                  initialX += velocity;
                  initialY += velocity;
                  break;
               case 4:
                  initialY += velocity;
                  break;
               case 5:
                  initialX -= velocity;
                  initialY += velocity;
                  break;
               case 6:
                  initialX -= velocity;
                  break;
               case 7:
                  initialX -= velocity;
                  initialY -= velocity;
                  break;
            }
         }
         drawPanel.Invoke( new ClearPanel( ClearBallsPanel ) );
      }
   }
}

the problem now is that the ball wont stop at the panel borders and just keep moving. i have already tried to remove that bug by putting a if condition.

if ( ( initialX  &lt;= drawPanel.Size.Width ) ||
   ( initialX &gt; 0 ) || ( initialY &gt; 0 ) ||
   ( initialY &lt;= drawPanel.Size.Height ) )

but it just doesn't work. i have done all the rest of the code including add a thread and mouse event handler.
the only problem now with this condition and the ball that doesn't stop.

Thanks Smile | :)

Excel and OleDb.Net

manustone22-Mar-07 5:36

manustone

22-Mar-07 5:36

Hi All

I'm newbe to OleDb classes.
I'm developing an application that writes on an Excel file using OleDb classes.
To do this there should be a Named Range present in the Excel file.
If I try to use the "Print_Area" name I receive an Exception.
Do you know if it is really possible to use Print_Area and how to do that?
I use the following code for example

"SELECT *.* From Print_Area"

Do I have to tell also what worksheet to use? If it so how to do that?

Regards
ManuStone

davidstern10022-Mar-07 5:32

davidstern100

22-Mar-07 5:32

I have a DataGrid in a Windows application form. I have set a button column aside to the data bound from a database.

How do I create a callback function to the clicking of a speciffic button in the DataGrid?

I know that in asp.net I've got the CommandName property of the button, called from the event of the clicking on the DataGrid. I want to do the exact same thing in my Windows application.

David Stern Online!

Windows User Control

Ashok Bansal22-Mar-07 5:32

Ashok Bansal

22-Mar-07 5:32

Hi All,
How do I render code of child control (Button,LinkLabel) in parent control (UserControl). Just like Visual studio renders code when Adding DataColumn in DataGridView.

Re: Windows User Control

Dave Kreskowiak22-Mar-07 7:07

Dave Kreskowiak

22-Mar-07 7:07

I don't understand what your saying. Are you asking how to get the child controls of your UserControl to redraw themselves??

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: Windows User Control

Ashok Bansal22-Mar-07 18:16

Ashok Bansal

22-Mar-07 18:16

Thanks for reply, No That can be done throuth Overriding OnPaint Event.
I am working on XPander Control for windows application. It has two part XPanderControl Itself and XPanderList Control to host XPanderControl. I don't want User to drag and drop sub controls (eg button,LinkLabel) in XPanderControl. for this I have created a Propery to add sub Control, just like DataGridView (we adds Columns and type of column(textbox,button) using 'Column Collection' Propery). this all working fine in design mode but on Running program all sub controls losts because there is no static code for subcontrols in page where XPanderControl used. I don't know how to add code for newly added subcontrols in this Page.

Ashok Bansal

Re: Windows User Control

Dave Kreskowiak23-Mar-07 13:21

Dave Kreskowiak

23-Mar-07 13:21

Ashok Bansal wrote:
this all working fine in design mode but on Running program all sub controls losts because there is no static code for subcontrols in page where XPanderControl used.

It sounds like you're looking for the DesignerSerialzationVisibility[^] attribute class. Without attaching this to the properties of your controls, the Designer can't generate the "static code" you're looking for.

Dave Kreskowiak
Microsoft MVP - Visual Basic

multiple controls label,&Checkboxex DOUBT

pashitech22-Mar-07 5:25

pashitech

22-Mar-07 5:25

HI all,
i am dynamically desplaying checkboxes depending upon my count,in CHECKEDLISTBOX CONTROL
BUt now i have to desplay a label and checkbox, in a single control
hope u got the point<wanna desplay="" a="" label="" and="" checkbox="" sidebyside="">
can i do with CHECKEDLISTBOX or should i need to take any other CONTROL
bye byes

prashanth,
s/w Engineer,
Syfnosys.

Christian Graus22-Mar-07 5:30

22-Mar-07 5:30

Why can't you just show all your text in the checkbox ? You can use Environment.NewLine in your string.

pashitech22-Mar-07 5:40

pashitech

22-Mar-07 5:40

thnx for ur response,
but what i mean he is,
now in my application i am desplaying 10properties[from my XmlFile] in my CHECKELISTBOX as CheckBoxes

And now i need to add a label[control] foreach[10]properties PLEASE TELL ME HOW?
finally plz tell me is it possible to desply two controls in CHECKEDLISTBOX?

prashanth,
s/w Engineer,
Syfnosys.

Christian Graus22-Mar-07 5:42

22-Mar-07 5:42

pashitech wrote:
And now i need to add a label[control] foreach[10]properties PLEASE TELL ME HOW?

Again, why do you need to add a label, why can't you just set the text of the checkbox ?

pashitech wrote:
finally plz tell me is it possible to desply two controls in CHECKEDLISTBOX?

I doubt it.

pashitech22-Mar-07 6:10

pashitech

22-Mar-07 6:10

finally plz tell me is it possible to desply two controls in CHECKEDLISTBOX?

here what i mean is,
see i'm desplaying TemparatureProperty and now i need to add description abt TemparatureProperty, Which is another attribute of my backend xml file

so my old output is
checkbox---TemparatureProperty
and my new expected output is
checkbox---TemparatureProperty + (label)TemparatureProperty'sDescription

Hope u got me now.

prashanth,
s/w Engineer,
Syfnosys.

Christian Graus22-Mar-07 7:22

Assembly headache during Office plugin deployment

22-Mar-07 7:22

pashitech wrote:
finally plz tell me is it possible to desply two controls in CHECKEDLISTBOX?

How often do I need to answer this ? No.

pashitech wrote:
checkbox---TemparatureProperty + (label)TemparatureProperty'sDescription

I reiterate. Why on EARTH can't you just append the string to show both values ?

dabs22-Mar-07 5:24

dabs

22-Mar-07 5:24

Hi,

I've been working on a plugin for Office, using .NET 2.0 - not using VSTO (Visual Studio Tools for Office). I'm almost finished, and I'm working on the deployment issues.

Appparently, there are a number of issues that one must avoid. First, you should always shim such plugins (see http://blogs.msdn.com/eric_carter/archive/2004/09/28/235500.aspx[^]), and fortunately there is a wizard to help you with that (http://blogs.msdn.com/eric_carter/archive/2006/06/23/641963.aspx[^]).

"Obviously", you should download the Primary Interop Assemblies (PIA) for Office and install them, and they can be found here[^].

Then, there is an KB article which describes a bug in Office that can be taken care of by downloading this[^] hotfix.

Finally, when all this has been taken care of, you can still run into trouble. Which is precisely what I've been experiencing. The thing is, my plugin has a reference to the Office applications it supports (Word,Excel,Outlook), or actually their PIA. But if the user doesn't have one of this application installed (I have an installation where Outlook isn't installed), it's PIA will not be installed either, and my plugin will try to reference a PIA which is not present. Which also means that when my plugin is being loaded from other Office applications, the load fails because the PIA cannot be found, even though that particular PIA will of course not be used. Needless to say, these PIA must be installed in the GAC and I have no control over them (other than shipping the install from Microsoft).

So, what are my options? Is there any way to "delay" the reference to an assembly? Or should I split my plugin into different assemblies, and load only the relevant assembly programmatically? I guess I could do that, but I would rather not if there is another way.

Hope someone will provide some insight into this - and I hope someone understood a word that I said!

Regards,
Daníel

Wenn ist das Nunstück git und Slotermeyer? Ja! Beierhund das oder die Flipperwaldt gersput!

Problems creating controls dinamicly thru code

sinosoidal22-Mar-07 5:23

sinosoidal

22-Mar-07 5:23

Hi,

I creating a SplitContainer inside a Panel thru code.

I have set the Dock property to fill, but when the splitContainer gets draw, it doesnt appear filled until i move the splitter.

Then it gets filled.

Can someone tell me why?
This is a resume of my code:

<br />
SplitContainer region = new SplitContainer();<br />
<br />
region.SuspendLayout();<br />
this.SuspendLayout();<br />
<br />
region.BorderStyle = BorderStyle.Fixed3D;<br />
region.SplitterDistance = d;<br />
region.TabIndex = regions.Count;<br />
region.Dock = System.Windows.Forms.DockStyle.Fill;<br />
regions[regions.Count-1].Panel1.Controls.Add(region);<br />
<br />
region.ResumeLayout(false);<br />
regions.Add(region);<br />
<br />

Any tips?

Thx,

Nuno

Christian Graus22-Mar-07 5:24

22-Mar-07 5:24

this.ResumeLayout ?

Or perhaps just Invalidate(); ?

I also don't see you adding the control to the Controls collection, does that happen below ?

sinosoidal22-Mar-07 5:39

sinosoidal

22-Mar-07 5:39

Yes, it does.

It really is a question of layout resume.

Just to give it a try, i took of all the Suspend and Resume Layout() calls.

It worked, straight out of the box!

But this is not a very good pratice, right?

So.. how should i do this kind of operation?

In which order?

This is how i done it:

this.SuspendLayout();
mainPanel.SuspendLayout();
region.SuspendLayout();

...

region.ResumeLayout(false);
this.mainPanel.ResumeLayout(false);
this.ResumeLayout(false);

?

Nuno

Christian Graus22-Mar-07 5:42

22-Mar-07 5:42

I've never bothered with suspend/resume layout.

sinosoidal22-Mar-07 5:44

sinosoidal

22-Mar-07 5:44

Its just a formality?

Can i ignore just like you, without serious implications? :P

Thx,

Nuno

Christian Graus22-Mar-07 5:59