How to insert an item in a list right where the user drops the item in WPF

Question

5.00/5 (1 vote)

See more:

Hi all,

i want to perform the drag and drop for items in a list box. list box items source is the collection List.
i have two list boxes. listbox1 contains all the items. i will drag and drop the selected items from list box1 to list box2(the items should be copied to listbox2). now in listbox2 again i want to drag and drop items with in the listbox2 to reorder the items.

but,when i do drag and drop of items with in the list box2 the items are added at the end of the list. i want to insert the item right where the user drops the item in the list box2.

i am able to get the index of selected item and remove from the list, but in WPF how to get the index of the item in the list where user drops the item so that i can insert the item to the list at that index.

Thanks in advance,

Posted 9-Nov-11 0:24am

KiranBabu M

Updated 9-Nov-11 23:32pm

v4

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Wayne Gaylard · Answer 1 · 2011-11-09T00:39:00

You should use the Insert method of the collection the ListView is bound to, instead of the Add method. To find the index of the items either side of the position the drop item is dropped, you are going to have to use the

<a href="http://msdn.microsoft.com/en-us/library/ms608752.aspx">VisualTreeHelper.HitTest</a>[<a href="http://msdn.microsoft.com/en-us/library/ms608752.aspx" target="_blank" title="New Window">^</a>]

method to find this. This method returns a Point, which you can compare to the e.Position property of the Drop handler for your ListView. Sounds complicated, and is, somewhat - Good Luck!