Combo box Initial Values

[Lenvdb]

Heya Gurus!
Upon loading a form I load all the combo boxes with lists of data from tables etc.
I initially want all the combo boxes to show no selected values. I set all the selectedindex properties to -1 but they all seem to default to 0, which is usually the first item in the list.

How do I get this right?

It worked fine in VB6 because by default the Listindex property was set to -1.

Rgds
B-0
Len

 

[SHelton]

A databound combo will, by default, show the first item in the datasource. The following cheat works (or at least it did for me...):

ComboBox1.SelectedIndex = ComboBox1.FindStringExact("")

 

[SHelton]

Ignore previous post - clearly had too many beers last night...

Sorry!

 

[Lenvdb]

No Problem mate..so it is a problem then with the data being bound to the ccombobox.

How do I use a SQL datareader to populate a combobox? Anyone got some examples for me?

Len

 

[Lenvdb]

So ,
Just looking at your posts it looks like a mission to use a datareader for populating combo boxes and lists...

Its much easier to just use datasets and data adapters and bind them to the controls. Am I right in my assumption?

Unless you convince me otherwise...

B-)
Len

 

[SHelton]

(Brain now in gear...)

What I usually do is populate a datatable and then, before I bind it to a combo, insert a row with the text 'Select an option'. Such as:

Dim dr As DataRow = DataTable.NewRow

dr(0) = "0"
dr(1) = "Select an option"

DataTable.Rows.InsertAt(dr, 0)

You can then use something like

If ComboBox.SelectedValue = "0" Then

to make sure the user has selected a valid item.