ComboBox Blank Entry

**Mark Rae** · Feb 12 '06, 09:25 AM

Re: ComboBox Blank Entry

"Steve B." <SteveB@discuss ions.microsoft. com> wrote in message
news:A970DA60-BFF7-48DB-B66D-6125F4685598@mi crosoft.com...
[color=blue]
> Without adding whitespace to the ComboBox datasource is there a way I can
> add
> a blank entry or, a reset entry, to the ComboBox dropdown[/color]

Not sure what you mean by whitespace - if you add a blank entry to a
ComboBox, that's exactly what it will be - a blank entry...

**Otis Mukinfus** · Feb 12 '06, 01:55 PM

Re: ComboBox Blank Entry

On Sat, 11 Feb 2006 14:32:31 -0800, "Steve B."
<SteveB@discuss ions.microsoft. com> wrote:
[color=blue]
>Without adding whitespace to the ComboBox datasource is there a way I can add
>a blank entry or, a reset entry, to the ComboBox dropdown
>
>Thanks
>Steve[/color]
If you mean you want to add a value to index zero of the combo box,
the way to do that is to populate the combo from the data source and
then add it by doing this:

private void FillButton_Clic k(object sender, EventArgs e)
{
string[] items = { "One", "Two", "Three" };

TestComboBox.It ems.AddRange(it ems);
TestComboBox.It ems.Insert(0, "Top Item");
TestComboBox.Se lectedIndex = 0;
}

Otis Mukinfus

http://www.otismukinfus.com

http://www.tomchilders.com

**Steve B.** · Feb 12 '06, 08:05 PM

Re: ComboBox Blank Entry

Thanks Mark/Otis for replying

My datasource is a database table.

Lets say the datasource for the CB dropdown is a database table of colors.
If the user selects the color "Red" in the dropdown and then changes his mind
later and decides not to select a any kind of color his only choice is to
backspace to remove his previous "Red" selection. I wanted to give the user
a choice to select a blank entry in the dropdown menu. I didn't want to add
a blank row to the database (bad practice).

Mark, I'm going to do some tests regarding your code

Thanks
Steve

"Otis Mukinfus" wrote:
[color=blue]
> On Sat, 11 Feb 2006 14:32:31 -0800, "Steve B."
> <SteveB@discuss ions.microsoft. com> wrote:
>[color=green]
> >Without adding whitespace to the ComboBox datasource is there a way I can add
> >a blank entry or, a reset entry, to the ComboBox dropdown
> >
> >Thanks
> >Steve[/color]
> If you mean you want to add a value to index zero of the combo box,
> the way to do that is to populate the combo from the data source and
> then add it by doing this:
>
> private void FillButton_Clic k(object sender, EventArgs e)
> {
> string[] items = { "One", "Two", "Three" };
>
> TestComboBox.It ems.AddRange(it ems);
> TestComboBox.It ems.Insert(0, "Top Item");
> TestComboBox.Se lectedIndex = 0;
> }
>
>
> Otis Mukinfus
> http://www.otismukinfus.com
> http://www.tomchilders.com
>[/color]

**Otis Mukinfus** · Feb 12 '06, 10:15 PM

Re: ComboBox Blank Entry

On Sun, 12 Feb 2006 11:56:03 -0800, "Steve B."
<SteveB@discuss ions.microsoft. com> wrote:
[color=blue]
>Thanks Mark/Otis for replying
>
>My datasource is a database table.
>
>Lets say the datasource for the CB dropdown is a database table of colors.
>If the user selects the color "Red" in the dropdown and then changes his mind
>later and decides not to select a any kind of color his only choice is to
>backspace to remove his previous "Red" selection. I wanted to give the user
>a choice to select a blank entry in the dropdown menu. I didn't want to add
>a blank row to the database (bad practice).
>
>Mark, I'm going to do some tests regarding your code
>
>Thanks
>Steve
>
>"Otis Mukinfus" wrote:
>[color=green]
>> On Sat, 11 Feb 2006 14:32:31 -0800, "Steve B."
>> <SteveB@discuss ions.microsoft. com> wrote:
>>[color=darkred]
>> >Without adding whitespace to the ComboBox datasource is there a way I can add
>> >a blank entry or, a reset entry, to the ComboBox dropdown
>> >
>> >Thanks
>> >Steve[/color]
>> If you mean you want to add a value to index zero of the combo box,
>> the way to do that is to populate the combo from the data source and
>> then add it by doing this:
>>
>> private void FillButton_Clic k(object sender, EventArgs e)
>> {
>> string[] items = { "One", "Two", "Three" };
>>
>> TestComboBox.It ems.AddRange(it ems);
>> TestComboBox.It ems.Insert(0, "Top Item");
>> TestComboBox.Se lectedIndex = 0;
>> }
>>
>>
>> Otis Mukinfus
>> http://www.otismukinfus.com
>> http://www.tomchilders.com
>>[/color][/color]
Change "Top Item" to "" and you will get a blank entry in the first
row. Then when the user selects an item from the ComboBox you can do
the appropriate thing based on the selected index.

Otis Mukinfus

http://www.otismukinfus.com

http://www.tomchilders.com

**Steve B.** · Feb 12 '06, 11:15 PM

Re: ComboBox Blank Entry

I'll try it thank you Otis

--Steve

"Otis Mukinfus" wrote:
[color=blue]
> On Sun, 12 Feb 2006 11:56:03 -0800, "Steve B."
> <SteveB@discuss ions.microsoft. com> wrote:
>[color=green]
> >Thanks Mark/Otis for replying
> >
> >My datasource is a database table.
> >
> >Lets say the datasource for the CB dropdown is a database table of colors.
> >If the user selects the color "Red" in the dropdown and then changes his mind
> >later and decides not to select a any kind of color his only choice is to
> >backspace to remove his previous "Red" selection. I wanted to give the user
> >a choice to select a blank entry in the dropdown menu. I didn't want to add
> >a blank row to the database (bad practice).
> >
> >Mark, I'm going to do some tests regarding your code
> >
> >Thanks
> >Steve
> >
> >"Otis Mukinfus" wrote:
> >[color=darkred]
> >> On Sat, 11 Feb 2006 14:32:31 -0800, "Steve B."
> >> <SteveB@discuss ions.microsoft. com> wrote:
> >>
> >> >Without adding whitespace to the ComboBox datasource is there a way I can add
> >> >a blank entry or, a reset entry, to the ComboBox dropdown
> >> >
> >> >Thanks
> >> >Steve
> >> If you mean you want to add a value to index zero of the combo box,
> >> the way to do that is to populate the combo from the data source and
> >> then add it by doing this:
> >>
> >> private void FillButton_Clic k(object sender, EventArgs e)
> >> {
> >> string[] items = { "One", "Two", "Three" };
> >>
> >> TestComboBox.It ems.AddRange(it ems);
> >> TestComboBox.It ems.Insert(0, "Top Item");
> >> TestComboBox.Se lectedIndex = 0;
> >> }
> >>
> >>
> >> Otis Mukinfus
> >> http://www.otismukinfus.com
> >> http://www.tomchilders.com
> >>[/color][/color]
> Change "Top Item" to "" and you will get a blank entry in the first
> row. Then when the user selects an item from the ComboBox you can do
> the appropriate thing based on the selected index.
>
> Otis Mukinfus
> http://www.otismukinfus.com
> http://www.tomchilders.com
>[/color]

ComboBox Blank Entry

ComboBox Blank Entry

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