Hi, i have got a error when i double click on ListView of .Net control, in windows form.can any one tell me its solution. at System.Windows.Forms.ListViewItem.set_Checked(Boolean value) at System.Windows.Forms.ListView.WmNmDblClick(Message& m) at System.Windows.Forms.ListView.WmReflectNotify(Message& m) at System.Windows.Forms.ListView.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Hi,

Can you tell what error you received?

Do you have event handlers attached to Click, DoubleClick or CheckChanged of ListView, If yes, please post your code,

Best Regards,

Rizwan a.k.a RizwanSharp

You probably have event handler for double click and some logic in that method throws exception
so place breakpoint on that mehod and see what is going on,

greet

yes i have CheckChanged and selectionchangedevent on ListView.bot not click and doubleclick event attached.

and i am checking e.checked

if yes then i am removing item from list and refilling the list.

i got object reference is null,error.

Can you paste code that you have in those twoevent handlers (methods)

greet

Check your "C:\WINDOWS\Microsoft.NET\Framework" .. Look for a 3.0 and / or 3.5 folder !!

If you don't have this folder download "Microsoft .net framework 3.5" and install it !!!

This is NOT a bullet proof way of fixing the problem !!! but i have just been investigating the exact same error, and found that the framework 3.0 have a fix that make my codeing style posible for the ListView control ...
I won't go in details about the error as it is something to do with the windows messages to the control ...

If you must get the code to work with framework 2.0 then you can overwrite the WndProc function (search the web fore details) ..
And just disable the double click message code ... (or run some code) ...
But only do this if you know what you are dooing !!!

bud start with getting the 3.5 framework ... and remenber, there is a problem with the old 3.5 installer wher you need to unregister and re register c:\windows\system32\msxml3.dll

hope this post may help someone !!! ...