Comments by toATwork (Top 39 by date)

does it stay LimeGreen all the time? If so try to Refresh your control.

1. create a new list
2. iterate through the checked items
3. if the Tag of the checked item is a DirectoryInfo, cast it to DirectoryInfo, and add the FullName to the list

http://msdn.microsoft.com/en-us/library/system.windows.forms.listview.checkeditems.aspx

So you are looking for the selected items? Then use ListView.SelectedItems.
Or have you set the ListView.CheckBoxes property to true.
You are not providing sufficient information.

I would rather use a list of strings. When the button is clicked, iterate recursive over all nodes. If it is checked and then add the path of the DirectoryInfo to your list.

Why "just" a vote of "3" for a correct solution?

No, I do not think that this is your problem. If I see your code above, you never assign the Tag of the new node!

Are you sure that you have assigned a DirectoryInfo object to the Tag of the "C:\" node? Otherwise the tag would not be null.

Sample is rather difficult.
You could change the constructor of your UserControl1 that it requieres a variable with the type of your parent control.
In your parent control define a public method which handles all the adding of new controls.
Then you can simply call in your control the function of the main (parent) control.

You have 2 possibilites. Either handle the add in your control and add a new UserControl1 to the (parent) flowpanel there. Or call the add functionality from the main form.

You are welcome. I hope you figure it out.

I am sorry but I do not have any further suggestions

Try to do it by keybord as described in the given link, e.g. left half snap (Windows + left)

Is left+right enabled? Can you do it by keyboard:
http://superuser.com/questions/285356/possible-to-snap-top-bottom-instead-of-just-left-right-in-windows-7

I was referring to the aero dock preview working on the top but not left or right

This I have never seen before.

It is used to determine where the mouse cursor is in the given Form, e.g. border, caption...
Check this out:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms645618%28v=vs.85%29.aspx

Dou you have a caption bar? Did you overwrite the HitTest function?

Have you enabled exceptions? Did you step by step debug the saving?

What is the exact error?

I think I do not understand.
If you deactivate all buttons then enable (or set visible) the activate items.

You need to enable the "activate" ToolStripMenuItem when you disable the button

In my opinion it should work always. My offer is still valid.

I sent you an email, please check your mailbox.

I am not confident in posting my mail addresse publicly. Is there any chance for private messages?

Which one is the line 462 as mentioned in:
at AnnunciatorMonitoringTool.Annunciator_Devices.Annunciator_Devices_Click(Object sender, EventArgs e) in C:\AnnunciatorMonitoringTool\AnnunciatorMonitoringTool\Annunciator Devices.cs:line 462

This function is causing your Dispose:
Annunciator_Devices_Click(Object sender, EventArgs e)

Please provide the code of it.

try to dump the StackTrace:
System.Console.WriteLine(Environment.StackTrace);

Is the issue resolved now? Which part exactly did the disposal?

Somewehere you are disposing your Form along the way. The code you have posted is not sufficient.

And line "form2.Show();" causes the exception?

You mean that the code you posted above still causes the problem?
private void btnOk_Click(object sender, EventArgs e)
{
if (form2 == null || form2.IsDisposed)
{
form2 = new Annunciator_Window(descriptionName, btnName.Text, Port, devicescount, SlvID);
form2.MdiParent = MdiParent;
form2.WindowState = FormWindowState.Maximized;
// myPictureForm.FormClosing += form2_Closing;
this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.MainForm_FormClosing);
}
this.Hide();
form2.Show();
}

How do you switch back from Form2 to Form1?

Manually won't work. Default visibility of class is internal.
If you have the source of the other dll ensure the class is declared public. Then you can instantiate it from other assemblies.