combo box values not set

[Ausclad]

Hi,
I have a combo box that I want to populate, based on the selection of
another combo box.

So when combo box A is selected, combo box B is populated with related values.

I have this all working fine, except for on the forms loading. I have
combobox B being populated after combobox A_SelectedIndexChanged event fires.

However, on the form load, when I try to retrieve the value from
"selectedvalue" , field, it is giving me "System.Data.DataRowView". that is
the field isnt populated.

I dont understand why there is no value if the selectedindex changed event
is firing?

Can someone advise how I should be handling this. Even when the combo box
isnt yet populated, the selected index is showing as zero?.

thanks

[Cor Ligthert [MVP]]

Ausclad,

This are probably very old issues with the combobox.
There are more solutions.
You protect the event with a boolean by that you set to true in the load
event or you set the handlers dynamicly at the end of that load event.

By instance the first is than in the event

\\\\
comboBoxIndexChangeEvent
if swLoaded then
'do what has to be done in this event
end if
end sub
///

I hope this gives an idea,

Cor

"Ausclad" <Au*****@discussions.microsoft.comschreef in bericht
news:1E**********************************@microsof t.com...

Hi,
I have a combo box that I want to populate, based on the selection of
another combo box.

So when combo box A is selected, combo box B is populated with related
values.

I have this all working fine, except for on the forms loading. I have
combobox B being populated after combobox A_SelectedIndexChanged event
fires.

However, on the form load, when I try to retrieve the value from
"selectedvalue" , field, it is giving me "System.Data.DataRowView". that
is
the field isnt populated.

I dont understand why there is no value if the selectedindex changed event
is firing?

Can someone advise how I should be handling this. Even when the combo box
isnt yet populated, the selected index is showing as zero?.

thanks

[Ausclad]

Thanks.

I also found this website that shed some light on the problem.
http://www.codeproject.com/csharp/sc...select=1453805

basically, I moved the order in which I bound the object then added a
boolean to check that I had finished the bind.

thanks

"Cor Ligthert [MVP]" wrote:

Ausclad,

This are probably very old issues with the combobox.
There are more solutions.
You protect the event with a boolean by that you set to true in the load
event or you set the handlers dynamicly at the end of that load event.

By instance the first is than in the event

\\\\
comboBoxIndexChangeEvent
if swLoaded then
'do what has to be done in this event
end if
end sub
///

I hope this gives an idea,

Cor

"Ausclad" <Au*****@discussions.microsoft.comschreef in bericht
news:1E**********************************@microsof t.com...

Hi,
I have a combo box that I want to populate, based on the selection of
another combo box.

So when combo box A is selected, combo box B is populated with related
values.

I have this all working fine, except for on the forms loading. I have
combobox B being populated after combobox A_SelectedIndexChanged event
fires.

However, on the form load, when I try to retrieve the value from
"selectedvalue" , field, it is giving me "System.Data.DataRowView". that
is
the field isnt populated.

I dont understand why there is no value if the selectedindex changed event
is firing?

Can someone advise how I should be handling this. Even when the combo box
isnt yet populated, the selected index is showing as zero?.

thanks