Retrieve information from DropDownList

S

Shaitan00

Junior Contributor
Joined
Aug 11, 2003
Messages
358
Location
Hell
--Using [VS ASP.NET]--
Given a dropdown list box (ddlDevice) filled with a Struct objects [DeviceInfo] as follows:

Code: 
struct DeviceInfo
{
	public int nDevice_ID;
	public string sDevice_Short;
	public string sDevice_Address;

	public DeviceInfo(int pnDevice_ID, string psDevice_Short, string psDevice_Address)
	{
		nDevice_ID = pnDevice_ID;
		sDevice_Short = psDevice_Short;
		sDevice_Address = psDevice_Address;
	}
}


--- MAIN CODE ---
DeviceInfo diInfo = new DeviceInfo(1, "Device1", "Home");
ddlDevice.Items.Add(diInfo.ToString());

[CODE]


Now later on in my code I am trying to retrieve the INTEGER value (nDevice_ID) associated with the selected item in the DropDown Listbox.
However everytime I try  I get casting errors (cannot cast string as DeviceInfo (.Selecteditem) or cannot cast list item as DeviceInfo (.SelectedValue))

I have tried like
 int dev = ((DeviceInfo)ddlDevice.SelectedItem).nDevice_ID;
 int dev = ((DeviceInfo)ddlDevice.SelectedValue).nDevice_ID;

ANy help would be appreciated.
Thanks,
 
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