treeview multiselect problem

  • Thread starter Thread starter Selva Kumari Padmanabhan
  • Start date Start date
S

Selva Kumari Padmanabhan

hi,

i am a new to c#, i hav 4months experience in C#,
I am populating a treeview in c# from XmlFile, and i have implemented
a multiselection in that treeview by overriding treeview select
events when ctrl or shift is pressed, which was written a seperate
DLL, and added with my project,


now i hav a problem that when i select treeview nodes by pressing
shift key at a same time initially it is creating an exception
"Object
reference not set to an instance of an object" and the application
closes.


i know this is bcoz, i have enqued selected nodes to a arraylist.
once
it presses shift its starting enqueing, and at that time selected
node
is null, thats y it is generating this exception i guess,


can anybody tell me how could i solve this?
 
hi,

i am a new to c#, i hav 4months experience in C#,
I am populating a treeview in c# from XmlFile, and i have implemented
a multiselection in that treeview by overriding treeview select
events when ctrl or shift is pressed, which was written a seperate
DLL, and added with my project,

now i hav a problem that when i select treeview nodes by pressing
shift key at a same time initially it is creating an exception
"Object
reference not set to an instance of an object" and the application
closes.

i know this is bcoz, i have enqued selected nodes to a arraylist.
once
it presses shift its starting enqueing, and at that time selected
node
is null, thats y it is generating this exception i guess,

can anybody tell me how could i solve this?
Click to expand...

maybe you just need add null check to the selected nodes, if it is
null, then do not enque it.
 
maybe you just need add null check to the selected nodes, if it is
null, then do not enque it.- Hide quoted text -

- Show quoted text -
Click to expand...

yes that is a problem i have cleared that
anyway thanks for ur reply...
 
Back
Top