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 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 don't have to! Just try and develop a control without that functionality! Of course, you can't turn it off, so, you'll just have to imagine that when you drop your control on a form to test it, nothing happens! You get a nice black hole where your control should paint itself. Why? Your rendering code doesn't run until you hit F5. You try changing a couple of properties to see if the rendering code is OK or see what the affects are, and nothing happens, until you hit F5. What a pain... It makes developing controls much easier to write and debug. If your skills can't handle that, well, ... RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

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

The Bitmap class inherits from Image and uses Image's FromFile method, which calls a GDI+ Flat API function in GDIPlus.dll (curiously, something you're NOT supposed to do), called GdipLoadImageFromFile to load the image file. It looks like the resulting file handle is never closed so long as the GDI+ Image object exists. As you probably know, the usual workaround was this[^] little article on MSDN. This eventually uses the GdipLoadImageFromStream GDI+ function, which does not hold a handle to the original image stream. In 2005, the PictureBox.Load method calls the static Image.FromStream method, no matter what the actual source of the image is, so locking the image file is not a problem. But, to answer his question, PictureBox.Image = null; should work no problem. I didn't have any at least... ;) RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

It works! Thanks again! :-) 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,

You might try taking a look at the CP article: http://www.codeproject.com/csharp/command_line.asp[^] It's in C# but should give you the idea and some background.

ASP Code: <% Set objTest = Server.CreateObject("TestCOM.Test") objTest.PhysicalPath = Request.ServerVariables("APPL_PHYSICAL_PATH") objTest.gstrName = "aa.doc" Call objTest.OpenFile() %> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ VB Code: Option Explicit Private WithEvents mobjWordApp As Word.Application Private WithEvents wrdDoc As Word.Document Private m_gstrName As Variant Private m_PhysicalPath As Variant Public Property Get PhysicalPath() As Variant PhysicalPath = m_PhysicalPath End Property Public Property Let PhysicalPath(ByVal Value As Variant) m_PhysicalPath = Value End Property Public Property Get gstrName() As Variant gstrName = m_gstrName End Property Public Property Let gstrName(ByVal Value As Variant) m_gstrName = Value End Property Private Sub Class_Initialize() Set mobjWordApp = CreateObject("Word.Application") End Sub Private Sub Class_Terminate() Set mobjWordApp = Nothing End Sub Public Sub OpenFile() Dim Doc_Path As String Doc_Path = Me.PhysicalPath & "TempFiles\" & Me.gstrName Call mobjWordApp.Documents.Open(Doc_Path, False, False) Set wrdDoc = mobjWordApp.ActiveDocument Doc_Path = Me.PhysicalPath & "TempFiles\TestResult.doc" Call wrdDoc.SaveAs(Doc_Path) wrdDoc.Close Set wrdDoc = Nothing mobjWordApp.Quit End Sub +++++++++++++++++++++ Thanks any way!

I think you can create a virtual directory before hand (named after your project) then you can create your project which would put the files there. James Simplicity Rules!