Hi

This is driving me round the twist.
All I want to do is from a populated Combo box retrieve the currently selected value so that I can pass it to some other method.

I have a combo box called cmboLetters with values set :
AB
BC
CD
DE

This was set in the collection of the control on the gui in VS2005

I have set in code the first viewable item on the combo box so we are not looking at an empty entry by doing the following:

this.cmboLetters.SelectedIndex = 0;

This loads up fine. However, I cannot get the selectedIndex value. When I say value I do not mean the index.
At index[0] here it should show me "AB". Well that was what I was expecting..... :[

I have tried all of the following and the results are:

cmboLetters.SelectedText = ""
cmboLetters.SelectedText.ToString() = ""
cmboLetters.SelectedItem.ToString(); = "System.Data.DataRowView"
cmboLetters.SelectedValue.ToString(); = "System.Data.DataRowView"
cmboLetters.SelectedValue = "System.Data.DataRowView"


Can anyone help?

For the display value use cmboLetters.SelectedItem.Text for the selected value use cmboLetters.SelectedIndex. Hope that helps

Thanks for your reply, but there is only combobox.SelectedItem.ToString() available which returns a "System.Data.DataRowView" not the value of the item.

There must be a way t o get the value "AB" from the combo box.

I've found a way of doing it. Forget the combo box and use the List box instead. Here you can get the value in the list by doing the following:

lstBox.Text = "AB"

I'm still puzzled by the combo box???!!!!***

Works for me!

The difference is I am binding the combox control with a datatable. At That point it's a nightmare. Admittedly I agree if you add items into the combo box without the datatable binding, it works.

Sadly for me it's come round to bite my behind again.
I can't use a list box as I have 100 items and as the combox consatinas the list it would be more functional for the user.

I'm still feeling hopefully.....Fingers and legs are still crossed for a bit of help.

Thanks


If anyone can help with this one it would be very much apreciated.

edit--nevermind. I had the same answer as n8wxs. Sorry.


This post has been edited by OliveOyl3471: 27 Jun, 2008 - 01:42 AM

Did you figure it out yet?
PsychoCoder is probably the only one here with the right answer. If I understand it correctly, this is what he means:

Change
cmboLetters.SelectedValue.ToString(); = "System.Data.DataRowView"

To
cmboLetters.SelectedValue = cmboLetters.SelectedIndex;

And add:
cmboLetters.DisplayMember = cmboLetters.SelectedItem.Text;

If that doesn't work, maybe you can figure it out from one of these sites:

http://msdn.microsoft.com/en-us/library/w67sdsex.aspx
http://forums.microsoft.com/MSDN/ShowPost....97&SiteID=1

I know this was posted a long time ago, but I figured someone like me may be searching for an answer. I'm not really an expert (hope I'm understanding the question), but I was having a similar problem. Since I have some experience with web applications, I was expecting the combobox to behave like the dropdownlist, which it doesn't. Anyhow, I got the selected value by using

string myStr = myComboBox.Text;

It makes sense, I suppose, since users can actually type in their own values so a Combobox acts as a Textbox as well.

the same code works for a combobox.