Application settings in constructor

[mail572352]

Hi, How best to get application settings to initialize a property or member variable? I have this in my constructor:

_MySetting = ConfigurationManager.AppSettings["MySetting"]);

This might fail if the user hasn't got the application setting defined. Constructor should only initialize members really so how best to write it in a constructor so that it initializes to a defined setting or another value if the setting is not defined? :)

[kubben]

If you happen to be using .net 2.0 you can use the ?? So your code would be: _MySetting = ConfigurationManager.AppSettings["MySetting"]) ?? "DefaultValueHere"; If you are using .net 1.1 you would probably have to do something like: if (ConfigurationManager.AppSettings["MySetting"] == null) { _MySetting = "DefaultValueHere"; } else { _MySetting = ConfigurationManager.AppSettings["MySetting"]); } Hope that helps. Ben

[badgrs]

string mySetting = ConfigurationManager.AppSettings["MySetting"]);
if(mySetting != null)
{
_MySetting = mySetting;
}
else
{
_MySetting = "default value";
}

Theres one way.

[thowra]

How about this:

_MySetting = (ConfigurationManager.AppSettings["MySetting "] == null) ? "default value" : ConfigurationManager.AppSettings["MySetting"]);

Evil cannot be conquered in the world... It can only be resisted within oneself.