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Doubleclick on listview row opens same forms more than ones.

Posted on 2012-04-10
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Last Modified: 2012-04-10
Hi,

I am programming in C# and I use VS2010.

I have a mainform with a listview called lvNotes on it. And a button for
displaying another form called StickyNotes. On the StickyNotes there
is a textbox where the user can put some text when he/she closes the
form the text of the textbox will be displayed in a new row in the listview.

The code looks like this:

        private void tbNewNote_ItemClick(object sender, ItemClickEventArgs e)
        {
            StickyNotes sticky = new StickyNotes();
            sticky.lblTitle.Text = "";
            sticky.rtbContent.Clear();
            sticky.lblCreation.Text = (DateTime.Now.ToString());
            sticky.FormClosed += new FormClosedEventHandler(sticky_FormClosed);
            sticky.Show();
        }
        //*------------------------------------------------------------*//
        void sticky_FormClosed(object sender, FormClosedEventArgs e)
        {
            StickyNotes sticky = (StickyNotes)sender;
            ListViewItem myItem = new ListViewItem(sticky.lblTitle.Text, 0);
            myItem = lvNotes.Items.Add(myItem);
            myItem.SubItems.Add(sticky.rtbContent.Text);
            myItem.SubItems.Add(sticky.lblCreation.Text);
            myItem.Selected = true;
        }
        //*------------------------------------------------------------*//
        private void lvNotes_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            StickyNotes sticky = new StickyNotes();
            sticky.lblTitle.Text = lvNotes.SelectedItems[0].Text;
            sticky.rtbContent.Text = lvNotes.SelectedItems[0].SubItems[1].Text;
            sticky.lblCreation.Text = lvNotes.SelectedItems[0].SubItems[2].Text;
            sticky.Show();
        }

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But when the user doubleclicks on the row of the listview the stickynotes form
appears again. But when the user clicks again on the same row the stickynotes
form appears twice. So I have to tell in the doubleclick-event that If the user
doubleclicks on the listview row and the Sticky Notes form of that row the user
is clicking on is still open/active then ignore.

How can I do that?

Peter
0
Comment
Question by:peterkiers
2 Comments
 
LVL 53

Accepted Solution

by:
Dhaest earned 500 total points
ID: 37826963
I see 2 possibilities:
1. Check if the form is already open:
http://hashfactor.wordpress.com/2009/01/28/c-check-if-a-form-is-already-opened/

2. Move a little bit in the code


        public StickyNotes sticky ;
        private void tbNewNote_ItemClick(object sender, ItemClickEventArgs e)
        {
            sticky = new StickyNotes();
            sticky.lblTitle.Text = "";
            sticky.rtbContent.Clear();
            sticky.lblCreation.Text = (DateTime.Now.ToString());
            sticky.FormClosed += new FormClosedEventHandler(sticky_FormClosed);
            sticky.Show();
        }
        //*------------------------------------------------------------*//
        void sticky_FormClosed(object sender, FormClosedEventArgs e)
        {
            sticky = (StickyNotes)sender;
            ListViewItem myItem = new ListViewItem(sticky.lblTitle.Text, 0);
            myItem = lvNotes.Items.Add(myItem);
            myItem.SubItems.Add(sticky.rtbContent.Text);
            myItem.SubItems.Add(sticky.lblCreation.Text);
            myItem.Selected = true;
           sticky  = null;
        }
        //*------------------------------------------------------------*//
        private void lvNotes_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            sticky = new StickyNotes();
            sticky.lblTitle.Text = lvNotes.SelectedItems[0].Text;
            sticky.rtbContent.Text = lvNotes.SelectedItems[0].SubItems[1].Text;
            sticky.lblCreation.Text = lvNotes.SelectedItems[0].SubItems[2].Text;
            sticky.Show
        }
0
 
LVL 1

Author Comment

by:peterkiers
ID: 37827112
Thanks.

Peter
0

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