Switch with AppSettings

[Elegabalus]

I'm using the Visual Studio 2005 Beta 2 build, but this should be the same across different versions.

I'm trying to use a Switch/Case statement to determine which label should be displayed.

I've got several keys stored in the web.config file that I want to use as the comparison for the switch statement. However, I get an error saying that "A constant value is expected." I understand that you can't have variables in the switch statement, but you can't have a fixed value from the config file?

Here's some code:

switch (strID)
{
	case ConfigurationManager.AppSettings["ID1"].ToString():
		Label1.Visible = true;
		break;
	case ConfigurationManager.AppSettings["ID2"].ToString():
		Label2.Visible = true;
		break;
	case ConfigurationManager.AppSettings["ID3"].ToString():
		Label3.Visible = true;
		break;
	default:
		Label1.Visible = true;
		break;
}

Anyone have an idea how to get this to work?

 

[JurkMonkey]

You could load the variables into an array and then loop through them until you find the correct one and then set some sort of flag/enumeration based on which item was found.

public enum IDType { zero, one, two, three }


ArrayList ids = new ArrayList();

ids.Add(ConfigurationManager.AppSettings["ID1"].ToString()):
ids.Add(ConfigurationManager.AppSettings["ID2"].ToString()):
ids.Add(ConfigurationManager.AppSettings["ID3"].ToString()):

IDType type = IDType.zero;

for (int i = 0; i < ids.Count; i++)
{
if (strID == (string)ids)
{
type = IDType.indexof(i); //Don't remember this but...
}
}

switch (type)
{
case IDType.one:
{
//dostuff
break;
}
}


bit of a long route, but it might give you some ideas.