WPF VB.NET : Object reference not set to an instance of an object.

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VS2010

I just wanted to take a listbox value to existing labels on different forms. an error on this code :

keyword.Content = w_list.ListBox1.SelectedItem.ToString

can anybody help me?

Posted 16-Feb-15 20:36pm

Raditya ZXY

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Kornfeld Eliyahu Peter 17-Feb-15 3:07am

One of the elements in w_list.ListBox1.SelectedItem is nothing...Use debugger to see which one...

Raditya ZXY 18-Feb-15 0:11am

I put the item listbox on the form w_list, I load the listbox item from notepad.
the problem is an error in the form p_list, where the label that I used to read the value of the items in the form w_list an error:

Object reference not set to an instance of an object

line error : line label.Content = w_list.ListBox1.SelectedItem.ToString

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