public void DeleteControl(int controlnumber) {
     this.Controls.Remove(this.textbox + controlnumber);
}

private void DeleteControl(int controlNumber)
{
	foreach (Control control in this.Controls)
	{
		String compareString = "textBox" + controlNumber.ToString();
		if (control.Name == compareString)
		{
			this.Controls.Remove(control);
			break;
		}
	}
}

if (control.Tag.ToString() == controNumber.ToString())

Quote:
you NEED the "break" line so it doesn't continue to loop and start referencing null values.

void RemoveControlFromPanel(Panel p, Control c)
{
    p.Controls.Remove(c);
    if (!c.IsDisposed)
        c.Dispose();
}

void RemoveAllControlsFromPanel(Panel p)
{
    foreach (Control c in p.Controls)
    {
        if (!c.IsDisposed)
            c.Dispose();
    }

    p.Controls.Clear();
}

Quote:
More importantly, it'll throw an exception when you try to iterate over a modified collection.

Yeah, what I meant to say . . .

Quote:
To adress Andy first, pointers in C# are normally avoided.

Quote:
To adress Andy first, pointers in C# are normally avoided.

myControls[0]=control1;
myControls[1]=control2;
...

Quote:
As far as the example Jeff, do you know perhaps a better way to be doing this to avoid loops?

Quote:
I want to have a situation where there can be a maximum of 8 groupboxes in the form, but if they are not all needed, less will be shown. Each groupbox contains identical controls (for example sake) to modify a text file 0-7.

Quote:
And thus now having the program only show controls for files 0,1,3,4,5,6,7, and with no visible gap between 1 and 3 because the controls that normally would be shown for 2 are now modifying 3 and such.

The one thing you can consider for handeling boxes appearing without gaps is how they are "docked". If you have a list and they are all docked to the "top", making one invisible (or deleting it) would cause the others to "snap" up. Another option might be a tabbed interface where each box goes on its own tab. In this scenerio it is easy to hide or delete any of the tabs and there would be no "gap".

I hopes this is helpful- I fear I might be confusing the issue more!

Quote:
Yeah, but Andy's point still applies -- except that you'd be using references.

Beat me to it while I was still typing!

Quote:

I'm kinda brute forcing myself to learn C# in a method that I teach myself what I need at a certain point in this basic program. Most things I have found answers for, but this particular situation is difficult to search books/manuals/online for an answer.

Quote:
However, if you are just learning this might be a bit advanced. It depends on your background with oop and creating custom controls.

Quote:
I want to have a situation where there can be a maximum of 8 groupboxes in the form, but if they are not all needed, less will be shown.

public string [] GameName =
 new string [] { "Game 0","Game 1","Game 2","Game 3","Game 4","Game 5","Game 6","Game 7","Game 8"};

public int[,] resarea = 
new int[,] { {8, 32}, {272, 32}, {536, 32}, {8, 112}, {272, 112}, {536, 112}, {8, 192}, {272, 192}, {536, 192}};

public int GuiItem = 0;

public System.Windows.Forms.GroupBox [] gBox = new System.Windows.Forms.GroupBox[9];

public void SpawnGuiItems(int gamenum)
{
	try 
	{
		// Add the groupbox to the form
		this.Controls.Add(gBox[GuiItem]);
		// Set intial properties for the groupbox
		gBox[GuiItem].Size = new System.Drawing.Size(256, 72);
		gBox[GuiItem].Location = new System.Drawing.Point(resarea[GuiItem,0],resarea[GuiItem,1]);
		gBox[GuiItem].Text = GameName[GuiItem];
		gBox[GuiItem].Tag = GuiItem;
		gBox[GuiItem].Click += new System.EventHandler(ClickHandler);
		GuiItem++;
	}
	catch (Exception ex) 
	{
		// Let the user know what went wrong.
		MessageBox.Show(ex.ToString(), "Exception generating the GUI", MessageBoxButtons.OK, MessageBoxIcon.Error);
	}
}

public void ClickHandler(Object sender, System.EventArgs e)
{
	System.Windows.Forms.MessageBox.Show("You have clicked groupbox " + 
		((System.Windows.Forms.GroupBox) sender).Tag.ToString());
}

Quote:
I know this is likely a basic OO issue

Quote:
but I'm still trying to get all the concepts down.

public System.Windows.Forms.GroupBox [] gBox = new System.Windows.Forms.GroupBox[9];

gBox[0]=null

gBox[1]=null

gBox[2]=null

...

this.Controls.Add(gBox[GuiItem]);

gBox[GuiItem].Size = new System.Drawing.Size(256, 72);

gBox[0] = new System.Windows.Forms.GroupBox();

gBox[1] = new System.Windows.Forms.GroupBox();

...