ComboBox index needs to be set twice

N

Nadav

Hello.
I have a combobox in a form (cmbNames).
The DataSource property is some arraylist of strings.
I have a button which is supposed to "clean" the combobox and deselect any
item.
Therefore, I do:
cmbNames.SelectedIndex = -1;

If index 0 was selected (meaning, the first item on the list) - the combobox
indeed goes to index -1 and there is no selected item.
if the selected item is not 0, meaning not the first item in the list - the
1st click on the button will select item 0 (the SelectedItem will be 0), and
another click will select nothing.

Why does that happen ?

(I attached a messagebox to the IndexChanged event of the combo, that pops
up the current index. When let's say index 3 is selected, on the click of
the button 2 messageboxes appear, the first saying -1, the second says 0. I
donno why is that!)

10x
 
M

MuZZy

Nadav said:
Hello.
I have a combobox in a form (cmbNames).
The DataSource property is some arraylist of strings.
I have a button which is supposed to "clean" the combobox and deselect any
item.
Therefore, I do:
cmbNames.SelectedIndex = -1;

If index 0 was selected (meaning, the first item on the list) - the combobox
indeed goes to index -1 and there is no selected item.
if the selected item is not 0, meaning not the first item in the list - the
1st click on the button will select item 0 (the SelectedItem will be 0), and
another click will select nothing.

Why does that happen ?

(I attached a messagebox to the IndexChanged event of the combo, that pops
up the current index. When let's say index 3 is selected, on the click of
the button 2 messageboxes appear, the first saying -1, the second says 0. I
donno why is that!)

Install .NET 1.1 Service Pack
I had a similar problem in combination of combo box and a text box and
SP1 helped
 
N

Nadav

Thanks alot.
I understand that it's not solved at the moment (correct?)
I have Frameworks 1.1
 
T

Tim Wilson

The knowledge base article indicates that this is a problem for 1.0 but it's
also a problem in 1.1. This has been fixed with 2.0.
 

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