I have a WAVE file and I want to know how much time that file can be played. How can I do it? I tried to use OpenNetCF but its WaveFormat2 doesn't help. I'm working on Windows Mobile 5 and .NET Compact Framework 2.0. Thanks

I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

It's a bug. I have a list contains several items of Tag(int id, string name). I use "id" as ValueMember and "name" as DisplayMember. If the first item has name is an empty string, the problem will appear. When you click the arrow, seems M$ implemented to select text value to get the index. If you have an empty string, it cannot select anything and the returned index will be -1.

I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

I have a combo box whose items are load from a List (List is not empty). I already set SelectedIndex = 0 to choose the first item in code. But at runtime, when I click the arrow, drop down list appear and I don't select any item, SelectedIndex will be set to -1. If I select an item, SelectedIndex will be other than -1. I think SelectedIndex should be 0 even I click the arrow and don't select any item. Is there any body has same problem?

I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

I found the answer myself. First, set maximize the child form in Form load event. Second, set ControlBox of the child form to be False. I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

I want to maximize MDI child form and also disable maximize button of it. How can I do that? Thanks I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

I told you the reason why I think this feature is stupid. But you, nothing. I just want to give you an opportunity to defend your idea. And if you cannot defend it, I will keep my idea until I find it fail. Don't wasting my time! ;-) I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

Can you show me the correct way to write a component? I want to see if it is correct or not. ;-) I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

Render? Did you forget InitializeComponent() method in constructor? I just have some questions for you. + Do you like it shows a message like in my example at design time? + Do you like to get an error message and can not design your form when you only want to load the picture at runtime like this button1.Image = Image.FromFile(Constant.IMAGES_DIRECTORY_PATH + "Back.jpg"); ? These only some simple cases. If you like them, this stupid feature is for you! I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

This code, it works. Thanks! :-) private void BaseForm_Load(object sender, System.EventArgs e){ if (!base.DesignMode){ MessageBox.Show("Hello, World!"); } } I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

I try to write a class that extends Form like that: public partial class BaseForm : Form { public BaseForm() { InitializeComponent(); } private void BaseForm_Load(object sender, System.EventArgs e) { MessageBox.Show("Hello, World!"); } } And then I write a class that extends class BaseForm public partial class MyForm : BaseForm { public MyForm() { InitializeComponent(); } } I rebuild project and open MyForm to design, it suddenly appears "Hello, World!" message box. I think it is a stupid feature in VS 2005 (I didn't check it in VS 2002, 2003 yet). How can I turn off this feature? http://t800t8.blogspot.com/2006/02/thc-thi-s-kin-load-khi-ang-design-form.html I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing -- modified at 19:58 Monday 20th February, 2006

Oop, I fixed it myself. Thanks anyway! using System.Collections; using System.Collections.Generic; namespace TryCollection.PositionEngine { class Tag : IEnumerable { #region Declare variables for internal use private List pointList = null; #endregion #region Declare variables for properties private string name; #endregion #region Constructors public Tag(string name) { this.name = name; pointList = new List(); } #endregion #region Properties public string Name { get { return name; } } #endregion #region Methods public void Add(Point point) { pointList.Add(point); } public IEnumerator GetEnumerator() { return pointList.GetEnumerator(); } IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); } #endregion } } I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

I implement my class like this using System.Collections; using System.Collections.Generic; namespace TryCollection.PositionEngine { class Tag : IEnumerable { #region Declare variables for internal use private List pointList = null; #endregion #region Declare variables for properties private string name; #endregion #region Constructors public Tag(string name) { this.name = name; pointList = new List(); } #endregion #region Properties public string Name { get { return name; } } #endregion #region Methods public void Add(Point point) { pointList.Add(point); } public IEnumerator GetEnumerator() { return pointList.GetEnumerator(); } #endregion } } but when I compile it, it shows me an error that 'TryCollection.PositionEngine.Tag' does not implement interface member 'System.Collections.IEnumerable.GetEnumerator()'. 'TryCollection.PositionEngine.Tag.GetEnumerator()' is either static, not public, or has the wrong return type. How can I implement System.Collections.IEnumerable.GetEnumerator() while I already have 'System.Collections.Generic.IEnumerable.GetEnumerator()? Help me! Thanks! I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing -- modified at 3:42 Thursday 26th January, 2006

I will try as your recommendation. Thank you! I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

Extractly! But I don't use Bitmap.FromFile, I used pictureBox.Load(). I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

Maybe my description has some confusions for you. I don't want to load another image to the pictrue box, I want my program can overwrite the image which I just have unload from the picture box. I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

After I unloaded an image from a picture box like that: if (pictureBox.Image != null){ pictureBox.Image.Dispose(); pictureBox.Image = null; } but when the application is still running, I cannot overwrite this image. How can overwrite it while application is still running? Thanks a lot! I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

It works! Thanks again! :-) I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

I loaded an image into a PictureBox control. But next time I want to unload it. How can I do that? Thanks! I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing

Maybe my description has some confusion for you. Here is my code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace RFCart
{
public partial class Main : Form
{

		// picImage is a PictureBox control
		
			private int drawMode;
			private bool mouseIsInShelf;
			
			private Shelf currentShelf;
			private ShelfArray shelfs = new ShelfArray();
			
			private void Main\_Load(object sender, EventArgs e)
			{
			
			    drawMode = Constant.SHELF\_MODE;
			
			}
			        
			private void picImage\_MouseDown(object sender, MouseEventArgs e)
			{
			
			    switch (e.Button)
			    {
			
			        case MouseButtons.Left:
			
			            Point mousePoint = new Point(e.X, e.Y);
			
									if (drawMode == Constant.SHELF\_MODE)
			            {
			
			                // Catch top-left point
			                currentShelf = new Shelf();
			                currentShelf.StartPoint = mousePoint;
			
			            }
			
			            break;
			
			    }
			
			}
			
			private void picImage\_MouseUp(object sender, MouseEventArgs e)
			{
			
			    switch (e.Button)
			    {
			
			        case MouseButtons.Left:
			
			            Point mousePoint = new Point(e.X, e.Y);
			
									if (drawMode == Constant.SHELF\_MODE)
			            {
			
			                // Catch bottom-right point
			                currentShelf.EndPoint = mousePoint;
			
			                // Add current shelf to array
			                shelfs.Add(currentShelf);
			
			                // Force to re-draw all shelfs
			                picImage.Invalidate();
			
			            }
			
			            break;
			
			    }
			
			}
			
			private void picImage\_MouseMove(object sender, MouseEventArgs e)
			{
			
			    Point mousePoint = new Point(e.X, e.Y);
			
			    foreach (Shelf shelf in shelfs)
			    {
			
			        if (shelf.Contains(mousePoint))
			        {
			            mouseIsInShelf = true;
			            break;
			        }
			        else
			        {
			            mouseIsInShelf = false;
			        }
			
			    }
			    
			}
			
			private void picImage\_Paint(object sender, PaintEventArgs e)
			{
			
			    foreach (Shelf shelf in shelfs)
			    {
			
			        shelf.Draw(e.Graphics,

I need to write a program which can draw rectangle by mouse. User can draw a rectangle by click left mouse button and drag mouse, when user release left mouse button, rectangle will be drawn. I can draw rectangle, but now I want to check when I move mouse, program can show me the mouse is inside a rectangle or not. I use an RectangleArray which inherits from CollectionBase to store all drawn rectangle. In mouse move method, I loop through this array and use Contains method of Rectangle class to check the mouse inside or not. But I don't understand while I only can check the position of mouse if it is inside the first rectangle I drawn (label4 only change value when I move the mouse inside the first rectangle). If I show a message box, label4 can change its value when I move the mouse inside any rectangle.

private void picImage_MouseMove(object sender, MouseEventArgs e)
{

Point mousePoint = new Point(e.X, e.Y);

    foreach (Rectangle rect in rects)
    {

            if (rect.Contains(mousePoint))
            {
           		label4.Text = "In rect";
           		//MessageBox.Show(label4.Text);
           		break;
        }
           	else
           	{
           		label4.Text = "Not in rect";
           	}

   	}

}

Can anybody help me? Thanks a lot! I'm ... a fan of Manchester United a fan of Ozzy Osbourne a King of Nothing